NSR Query Results
Output year order : Descending NSR database version of March 18, 2024. Search: Author = N.Pietralla Found 332 matches. Showing 1 to 100. [Next]2024WU04 Phys.Rev. C 109, 024314 (2024) J.Wu, M.P.Carpenter, F.G.Kondev, R.V.F.Janssens, S.Zhu, E.A.McCutchan, A.D.Ayangeakaa, J.Chen, J.Clark, D.J.Hartley, T.Lauritsen, N.Pietralla, G.Savard, D.Seweryniak, V.Werner Determination of the spins and parities for the 04+ and 05+ states in 100Zr
doi: 10.1103/PhysRevC.109.024314
2023FE08 Phys. Rev. Res. 5, L022044 (2023) R.W.Fearick, P.von Neumann-Cosel, S.Bacca, J.Birkhan, F.Bonaiti, I.Brandherm, G.Hagen, H.Matsubara, W.Nazarewicz, N.Pietralla, V.Yu.Ponomarev, P.-G.Reinhard, X.Roca-Maza, A.Richter, A.Schwenk, J.Simonis, and A.Tamii Electric dipole polarizability of 40Ca NUCLEAR REACTIONS 40Ca(p, p'), E=5-25 MeV; measured reaction products, Ep, Ip; deduced electric dipole strength distribution, σ(θ, E). Comparison with available data. The Grand Raiden spectrometer, RCNP, Osaka.
doi: 10.1103/PhysRevResearch.5.L022044
2023IS05 Phys.Rev. C 108, L051301 (2023) J.Isaak, D.Savran, N.Pietralla, N.Tsoneva, A.Zilges, K.Eberhardt, C.Geppert, C.Gorges, H.Lenske, D.Renisch Direct demonstration of the two-phonon structure of the Jnullp = 1-4742keV
doi: 10.1103/PhysRevC.108.L051301
2022DA06 Phys.Rev. C 105, L031304 (2022) B.Das, B.Cederwall, C.Qi, M.Gorska, P.H.Regan, O.Aktas, H.M.Albers, A.Banerjee, M.M.R.Chishti, J.Gerl, N.Hubbard, S.Jazrawi, J.Jolie, A.K.Mistry, M.Polettini, A.Yaneva, S.Alhomaidhi, J.Zhao, T.Arici, S.Bagchi, G.Benzoni, P.Boutachkov, T.Davinson, T.Dickel, E.Haettner, O.Hall, Ch.Hornung, J.P.Hucka, P.R.John, I.Kojouharov, R.Knobel, D.Kostyleva, N.Kuzminchuk, I.Mukha, W.R.Plass, B.S.Nara Singh, J.Vasiljevic, S.Pietri, Zs.Podolyak, M.Rudigier, H.Rosch, E.Sahin, H.Schaffner, C.Scheidenberger, F.Schirru, A.Sharma, R.Shearman, Y.Tanaka, J.Vesic, H.Weick, H.J.Wollersheim, U.Ahmed, A.Algora, C.Appleton, J.Benito, A.Blazhev, A.Bracco, A.M.Bruce, M.Brunet, R.Canavan, A.Esmaylzadeh, L.M.Fraile, G.Hafner, H.Heggen, D.Kahl, V.Karayonchev, R.Kern, A.Korgul, G.Kosir, N.Kurz, R.Lozeva, M.Mikolajczuk, P.Napiralla, R.Page, C.M.Petrache, N.Pietralla, J.-M.Regis, P.Ruotsalainen, L.Sexton, V.Sanchez-Temble, M.Si, J.Vilhena, V.Werner, J.Wiederhold, W.Witt, P.J.Woods, G.Zimba Nature of seniority symmetry breaking in the semimagic nucleus 94Ru RADIOACTIVITY 95mPd(β+p)[from 9Be(124Xe, F), E=850 MeV/nucleon];measured Eγ, Iγ, Ep, Ip, γγ-coin, pγ-coin. 94Ru; deduced T1/2 of low-lying excited states, B(E2). Comparison to shell-model calculations. Ions were separated with FRS at GSI and implanted in the Advanced Implantation Detector Array (AIDA), composed of three double-sided silicon strip detectors (DSSSDs) situated at the center of the DEcay SPECtroscopy (DESPEC) setup, comprised of a hybrid array of six triple cluster high-purity germanium (HPGe) detectors and 36 LaBr3(Ce) detectors of the FAst TIMing Array (FATIMA).
doi: 10.1103/PhysRevC.105.L031304
2022HO01 J.Phys.(London) G49, 010502 (2022) C.R.Howell, M.W.Ahmed, A.Afanasev, D.Alesini, J.R.M.Annand, A.Aprahamian, D.L.Balabanski, S.V.Benson, A.Bernstein, C.R.Brune, J.Byrd, B.E.Carlsten, A.E.Champagne, S.Chattopadhyay, D.Davis, E.J.Downie, J.M.Durham, G.Feldman, H.Gao, C.G.R.Geddes, H.W.Griesshammer, R.Hajima, H.Hao, D.Hornidge, J.Isaak, R.V.F.Janssens, D.P.Kendellen, M.Kovash, P.P.Martel, U.-G.Meissner, R.Miskimen, B.Pasquini, D.R.Phillips, N.Pietralla, D.Savran, M.R.Schindler, M.H.Sikora, W.M.Snow, R.P.Springer, C.Sun, C.Tang, B.Tiburzi, A.P.Tonchev, W.Tornow, C.A.Ur, D.Wang, H.R.Weller, V.Werner, Y.K.Wu, J.Yan, Z.Zhao, A.Zilges, F.Z.Zomer International workshop on next generation gamma-ray source
doi: 10.1088/1361-6471/ac2827
2022RE10 Phys.Rev. C 106, 014320 (2022) K.Rezynkina, D.D.Dao, G.Duchene, J.Dudouet, F.Nowacki, E.Clement, A.Lemasson, C.Andreoiu, A.Astier, G.de Angelis, G.de France, C.Delafosse, I.Deloncle, F.Didierjean, Z.Dombradi, C.Ducoin, A.Gadea, A.Gottardo, D.Guinet, B.Jacquot, P.Jones, T.Konstantinopoulos, I.Kuti, A.Korichi, S.M.Lenzi, G.Li, F.Le Blanc, C.Lizarazo, R.Lozeva, G.Maquart, B.Million, C.Michelagnoli, D.R.Napoli, A.Navin, R.M.Perez-Vidal, C.M.Petrache, N.Pietralla, D.Ralet, M.Ramdhane, M.Rejmund, O.Stezowski, C.Schmitt, D.Sohler, D.Verney Structure of 83As, 85As, and 87As: From semimagicity to γ softness NUCLEAR REACTIONS 9Be(238U, X)83As/85As/87As, E=6.2 MeV/nucleon; measured Eγ, Iγ, (particle)γ-coin, γγ-coin using the VAMOS++ spectrometer for particle detection and AGATA array for γ radiation at GANIL facility. 83,85,87As; deduced levels, J, π, collectivity in a prolate deformed, γ-soft regime in the open shell nuclei. Comparison with shell-model calculations. Systematics of energies of 9/2+ states in 83,85,87,89As, 85,87,89,91Br, 87,89,91,93Rb, 89,91,93,95Y from experimental data and large-scale shell-model calculations. NUCLEAR STRUCTURE 85,87As; calculated levels, J, π, potential energy surfaces (PES) in (β, γ) planes, wave functions amplitudes in K-quantum numbers. Large-scale shell-model calculations, SU3 symmetries, and beyond mean-field calculations.
doi: 10.1103/PhysRevC.106.014320
2022SA39 Phys.Rev. C 106, 044324 (2022) D.Savran, J.Isaak, R.Schwengner, R.Massarczyk, M.Scheck, W.Tornow, G.Battaglia, T.Beck, S.W.Finch, C.Fransen, U.Friman-Gayer, R.Gonzalez, E.Hoemann, R.V.F.Janssens, S.R.Johnson, M.D.Jones, J.Kleemann, Krishichayan, D.R.Little, D.O'Donnell, O.Papst, N.Pietralla, J.Sinclair, V.Werner, O.Wieland, J.Wilhelmy Model-independent determination of the dipole response of 66Zn using quasimonoenergetic and linearly polarized photon beams NUCLEAR REACTIONS 66Zn(polarized γ, γ'), E=5.6-9.9 MeV; measured Eγ, Iγ, γγ-coin; deduced elastic, inelastic and total photoabsorption σ(E), average ground-state branching ratio, ratio of M1 to E1 elastic σ(E). Comparison to other experimental results. γ3-detector setup consisting of HPGe and LaBr3:Ce detectors at HIγS facility of the TUNL at Duke University.
doi: 10.1103/PhysRevC.106.044324
2022ZI01 Prog.Part.Nucl.Phys. 122, 103903 (2022) A.Zilges, D.L.Balabanski, J.Isaak, N.Pietralla Photonuclear reactions-From basic research to applications
doi: 10.1016/j.ppnp.2021.103903
2021CR01 Phys.Lett. B 816, 136210 (2021) F.C.L.Crespi, A.Bracco, E.G.Lanza, A.Tamii, N.Blasi, F.Camera, O.Wieland, N.Aoi, D.L.Balabanski, S.Bassauer, A.S.Brown, M.P.Carpenter, J.J.Carroll, M.Ciemala, A.Czeszumska, P.J.Davies, V.Derya, L.M.Donaldson, Y.D.Fang, H.Fujita, G.Gey, H.T.Ha, M.N.Harakeh, T.Hashimoto, N.Ichige, E.Ideguchi, A.Inoue, J.Isaak, C.Iwamoto, D.G.Jenkins, T.Klaus, N.Kobayashi, T.Koike, M.Krzysiek, M.K.Raju, M.Liu, A.Maj, L.Morris, P.von Neumann-Cosel, S.Noji, H.J.Ong, S.G.Pickstone, N.Pietralla, D.Savran, J.M.Schmitt, M.Spieker, G.Steinhilber, C.Sullivan, B.Wasilewska, M.Weinert, V.Werner, Y.Yamamoto, T.Yamamoto, R.G.T.Zegers, X.Zhou, S.Zhu, A.Zilges The structure of low-lying 1- states in 90, 94Zr from (α, α'γ) and (p, p'γ) reactions NUCLEAR REACTIONS 90,94Zr(p, p'γ), E=80 MeV; 90,94Zr(α, α'γ), E=130 MeV; measured reaction products, Eγ, Iγ; deduced ratio of the measured yields, dipole states σ, transition densities, low-lying dipole strength. The array CAGRA with HPGe detectors.
doi: 10.1016/j.physletb.2021.136210
2021FR01 Phys.Rev.Lett. 126, 102501 (2021) U.Friman-Gayer, C.Romig, T.Huther, K.Albe, S.Bacca, T.Beck, M.Berger, J.Birkhan, K.Hebeler, O.J.Hernandez, J.Isaak, S.Konig, N.Pietralla, P.C.Ries, J.Rohrer, R.Roth, D.Savran, M.Scheck, A.Schwenk, R.Seutin, V.Werner Role of Chiral Two-Body Currents in 6Li Magnetic Properties in Light of a New Precision Measurement with the Relative Self-Absorption Technique RADIOACTIVITY 6Li(IT) [from 6Li(γ, γ'), E<7.1 MeV]; measured decay products, Eγ, Iγ; deduced B(M1), decay width. Comparison with ab initio calculations based on chiral effective field theory that take into account contributions to the magnetic dipole operator beyond leading order.
doi: 10.1103/PhysRevLett.126.102501
2021ID01 Phys.Rev. C 103, 054302 (2021) K.E.Ide, T.Beck, V.Werner, M.Berger, S.W.Finch, U.Friman-Gayer, J.Kleemann, Krishichayan, B.Loher, O.Papst, N.Pietralla, D.Savran, W.Tornow, M.Weinert, J.Wiederhold, A.Zilges E2 decay characteristics of the M1 scissors mode of 152Sm NUCLEAR REACTIONS 152Sm(polarized γ, γ'), E=3 MeV; measured Eγ, Iγ, γ(polarization azimuthal asymmetry) by nuclear resonance fluorescence (NRF) method using four HPGe detectors at the HIγS facility at TUNL. 152Sm; deduced levels, J, π, B(M1), B(E1), γ-branching ratios to the ground state and the first 2+ state, E2/M1 multipole mixing ratios, B(E2), summed scissors mode B(M1). Comparison with predictions of interacting boson model-2 (IBM-2); predicted energy and transition strength of the 2+ mixed-symmetry state.
doi: 10.1103/PhysRevC.103.054302
2021IS05 Phys.Rev. C 103, 044317 (2021) J.Isaak, D.Savran, B.Loher, T.Beck, U.Friman-Gayer, Krishichayan, N.Pietralla, V.Yu.Ponomarev, M.Scheck, W.Tornow, V.Werner, A.Zilges, M.Zweidinger Dipole response in 128, 130Te below the neutron threshold NUCLEAR REACTIONS 128,130Te(γ, γ'), (polarized γ, γ'), E=6.0, 9.13 MeV for 128Te and 6.4, 8.5 MeV for 130Te from Darmstadt high-intensity photon beams (DHIPS), and 2.76-8.92 MeV for 128Te and 5.5-8.5 MeV for 130Te linearly polarized and quasimonochromatic photon beams from TUNL HIγS facility; measured Eγ, Iγ, γγ(θ), γ(linear polarization). 128,130Te; deduced levels below the neutron threshold, pygmy dipole resonance (PDR), J, π, γ-branching ratios to the first excited 2+ states, Γ02/Γ, photoabsorption cross sections, B(E1), dominant 1- states. Comparison with predictions of quasiparticle phonon model. Detailed data for levels given in the Supplemental Material of the paper.
doi: 10.1103/PhysRevC.103.044317
2021KA36 Phys.Rev. C 104, 024311 (2021) D.Kalaydjieva, D.Kocheva, G.Rainovski, V.Karayonchev, J.Jolie, N.Pietralla, M.Beckers, A.Blazhev, A.Dewald, M.Djongolov, A.Esmaylzadeh, C.Fransen, K.A.Gladnishki, A.Goldkuhle, C.Henrich, I.Homm, K.E.Ide, P.R.John, R.Kern, J.Kleemann, Th.Kroll, C.Muller-Gatermann, M.Scheck, P.Spagnoletti, M.Stoyanova, K.Stoychev, V.Werner, A.Yaneva, S.S.Dimitrova, G.De Gregorio, H.Naidja, A.Gargano Microscopic structure of the one-phonon 2+ states of 208Po NUCLEAR REACTIONS 204Pb(12C, 8Be)208Po, E=62 MeV; measured Eγ, Iγ, (particle)γ-coin, half-lives of the first 2+ and 4+ levels by recoil-distance Doppler-shift (RDDS) method using the Cologne plunger device at the FN Tandem facility of the University of Cologne. 208Po; deduced levels, J, π, B(E2). Comparison with large-scale shell-model calculations. NUCLEAR STRUCTURE 208Po; calculated levels, J, π, B(E2), B(M1), magnetic dipole and electric quadrupole moments using large-scale shell-model calculations with an effective interaction derived from the realistic CD-Bonn nucleon-nucleon potential. Comparison with experimental data.
doi: 10.1103/PhysRevC.104.024311
2021KL04 Phys.Rev. C 104, L061302 (2021) J.Kleemann, T.Beck, U.Friman-Gayer, N.Pietralla, V.Werner, S.W.Finch, J.Kotila, Krishichayan, B.Loher, H.Pai, O.Papst, W.Tornow, M.Weinert, A.Zilges Majorana parameters of the interacting boson model of nuclear structure and their implication for 0νββ decay NUCLEAR REACTIONS 150Nd(polarized γ, γ'), E=2994 keV; 150Sm(polarized γ, γ'), E=3113 keV; measured Eγ, Iγ, γ(θ), γ(linear polarization) at the High Intensity γ-ray Source (HIγS) of Duke University. 150Sm, 150Nd; deduced γ-branching ratios from the 1+ scissors mode state to the first excited 0+ and second 2+ state in 150Nd, negative parity for the 3082-keV in 150Sm, J=1 level, in disagreement with positive parity assigned in the ENSDF database, and confirmed 1+ for the 2994-keV level in 150Nd; calculated positive-parity levels and B(M1) for 1+ scissors mode (SCM) states using IBM-2, and compared with experimental data in the ENSDF database. Relevance to 0νββ decay mode of 150Nd. RADIOACTIVITY 150Nd(2β-); calculated nuclear matrix elements (NMEs) for 0νββ decay to the g.s. and the first excited 0+ state in 150Sm using interacting boson model-2 (IBM-2), and compared with predictions of energy density-functional (EDF) method; deduced strong constraints for the Majorana parameters.
doi: 10.1103/PhysRevC.104.L061302
2021MA62 Phys.Lett. B 820, 136569 (2021) K.R.Mashtakov, V.Yu.Ponomarev, M.Scheck, S.W.Finch, J.Isaak, M.Zweidinger, O.Agar, C.Bathia, T.Beck, J.Beller, M.Bowry, R.Chapman, M.M.R.Chishti, U.Friman-Gayer, L.P.Gaffney, P.E.Garrett, E.T.Gregor, J.M.Keatings, U.Koster, B.Loher, A.D.MacLean, D.O'Donnell, H.Pai, N.Pietralla, G.Rainovski, M.Ramdhane, C.Romig, G.Rusev, D.Savran, G.S.Simpson, J.Sinclair, K.Sonnabend, P.Spagnoletti, A.P.Tonchev, W.Tornow Structure of high-lying levels populated in the 96Y → 96Zr β decay RADIOACTIVITY 96Y(β-) [from 235U(n, F), E thermal]; measured decay products, Eγ, Iγ, Eβ, Iβ; deduced γ-ray energies, B(E1), branching ratios, Gamow-Teller transition probabilities B(GT). Quasiparticle Phonon Model. Institut Laue Langevin (ILL), LOHENGRIN separator.
doi: 10.1016/j.physletb.2021.136569
2021SE16 Phys.Rev. C 104, 024310 (2021) A.P.Severyukhin, N.N.Arsenyev, N.Pietralla First calculation of the γγ-decay width of a nuclear 2+1 state: The case of 48Ca NUCLEAR REACTIONS 48Ca(p, p'γ), E=10-25 MeV; calculated phonon-phonon coupling effect on the B(E1) strength distribution of GDR, γγ-decay width of the first 2+ state. 48Ca; deduced branching ratio I(γγ decay)/Iγ decay from the first 2+ state. Microscopic model based on the Skyrme energy density functional, with coupling of one-, two-, and three-phonon terms in the wave functions of excited states.
doi: 10.1103/PhysRevC.104.024310
2020AV04 Phys.Lett. B 811, 135951 (2020) R.Avigo, O.Wieland, A.Bracco, F.Camera, F.Ameil, T.Arici, A.Atac, D.Barrientos, D.Bazzacco, P.Bednarczyk, G.Benzoni, B.Birkenbach, N.Blasi, H.C.Boston, S.Bottoni, S.Brambilla, B.Bruyneel, M.Ciemala, E.Clement, M.L.Cortes, F.C.L.Crespi, D.M.Cullen, D.Curien, F.Didierjean, C.Domingo-Pardo, G.Duchene, J.Eberth, A.Gorgen, A.Gadea, J.Gerl, N.Goel, P.Golubev, V.Gonzalez, M.Gorska, A.Gottardo, E.Gregor, G.Guastalla, T.Habermann, L.J.Harkness-Brennan, A.Jungclaus, M.Kmiecik, I.Kojouharov, W.Korten, N.Kurz, M.Labiche, N.Lalovic, S.Leoni, M.Lettmann, A.Maj, R.Menegazzo, D.Mengoni, E.Merchan, B.Million, A.I.Morales, D.R.Napoli, C.Nociforo, J.Nyberg, N.Pietralla, S.Pietri, Zs.Podolyak, V.Yu.Ponomarev, A.Pullia, B.Quintana, G.Rainovski, D.Ralet, F.Recchia, M.Reese, P.Regan, P.Reiter, S.Riboldi, D.Rudolph, M.D.Salsac, E.Sanchis, L.G.Sarmiento, H.Schaffner, J.Simpson, O.Stezowski, J.J.Valiente-Dobon, H.J.Wollersheim Low-lying electric dipole γ-continuum for the unstable 62, 64Fe nuclei: Strength evolution with neutron number NUCLEAR REACTIONS 197Au(62Fe, 62Fe'), (64Fe, 64Fe'), E=400-440 MeV/nucleon; measured reaction products, Eγ, Iγ. 62,64Fe; deduced γ-ray energies, B(E1). Comparison with the quasi-particle phonon model (QPM) calculations. FRS spectrometer, AGATA.
doi: 10.1016/j.physletb.2020.135951
2020BA47 Phys.Rev. C 102, 034327 (2020) S.Bassauer, P.von Neumann-Cosel, P.-G.Reinhard, A.Tamii, S.Adachi, C.A.Bertulani, P.Y.Chan, A.D'Alessio, H.Fujioka, H.Fujita, Y.Fujita, G.Gey, M.Hilcker, T.H.Hoang, A.Inoue, J.Isaak, C.Iwamoto, T.Klaus, N.Kobayashi, Y.Maeda, M.Matsuda, N.Nakatsuka, S.Noji, H.J.Ong, I.Ou, N.Pietralla, V.Yu.Ponomarev, M.S.Reen, A.Richter, M.Singer, G.Steinhilber, T.Sudo, Y.Togano, M.Tsumura, Y.Watanabe, V.Werner Electric and magnetic dipole strength in 112, 114, 116, 118, 120, 124Sn NUCLEAR REACTIONS 112,114,116,118,120,124Sn(p, p'), E=295 MeV; measured E(p), I(p), particle spectra through identification via the correlation of energy loss and time of flight (ToF), double differential σ(θ, E(exc)) using Grand Raiden spectrometer at RCNP accelerator facility; deduced photoabsorption cross sections due to E1 and M1 excitations from multipole decomposition analysis (MDA) after subtraction of the ISGMR and ISGQR contributions, σ, energy and width of isovector giant dipole resonance (IVGDR), B(E1) and B(M1) strengths in the excitation energy range of 6-20 MeV, dipole polarizability. Comparison with previous experimental results from (γ, xn) and (γ, γ') experiments.
doi: 10.1103/PhysRevC.102.034327
2020BA50 Phys.Lett. B 810, 135804 (2020) S.Bassauer, P.von Neumann-Cosel, P.-G.Reinhard, A.Tamii, S.Adachi, C.A.Bertulani, P.Y.Chan, G.Colo, A.D'Alessio, H.Fujioka, H.Fujita, Y.Fujita, G.Gey, M.Hilcker, T.H.Hoang, A.Inoue, J.Isaak, C.Iwamoto, T.Klaus, N.Kobayashi, Y.Maeda, M.Matsuda, N.Nakatsuka, S.Noji, H.J.Ong, I.Ou, N.Paar, N.Pietralla, V.Yu.Ponomarev, M.S.Reen, A.Richter, X.Roca-Maza, M.Singer, G.Steinhilber, T.Sudo, Y.Togano, M.Tsumura, Y.Watanabe, V.Werner Evolution of the dipole polarizability in the stable tin isotope chain NUCLEAR REACTIONS 112,114,116,118,120,124Sn(p, p'), E=295 MeV; 116Sn(γ, X), E<30 MeV; measured reaction products, Ep, Ip; deduced σ(θ, E), σ, total dipole polarizability. Comparison with available data.
doi: 10.1016/j.physletb.2020.135804
2020BE22 Phys.Rev.Lett. 125, 092501 (2020) T.Beck, V.Werner, N.Pietralla, M.Bhike, N.Cooper, U.Friman-Gayer, J.Isaak, R.V.Jolos, J.Kleemann, Krishichayan, O.Papst, W.Tornow, C.Bernards, B.P.Crider, R.S.Ilieva, B.Loher, C.Mihai, F.Naqvi, S.Pascu, E.E.Peters, F.M.Prados-Estevez, T.J.Ross, D.Savran, J.R.Vanhoy, A.Zilges ΔK = 0 m1 Excitation Strength of the Well-Deformed Nucleus 164Dy from K Mixing NUCLEAR REACTIONS 164Dy(γ, γ'), E=3-3.2 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, B(M1), reduced relative decay-intensity ratios, excitation strengths.
doi: 10.1103/PhysRevLett.125.092501
2020CI01 Phys.Lett. B 802, 135222 (2020) N.Cieplicka-Orynczak, C.Michelagnoli, A.Gargano, B.Fornal, S.Leoni, G.Benzoni, A.Blanc, S.Bottoni, F.C.L.Crespi, L.W.Iskra, M.Jentschel, U.Koster, P.Mutti, N.Pietralla, E.Ruiz-Martinez, V.Werner Contrasting properties of particle-particle and hole-hole excitations in 206Tl and 210Bi nuclei NUCLEAR REACTIONS 209Bi, 205Tl(n, γ), E thermal; measured reaction products, Eγ, Iγ; deduced γ-ray energies, J, π, level schemes, branching ratios. Comparison with shell-model realistic calculations.
doi: 10.1016/j.physletb.2020.135222
2020DA10 Phys.Rev. C 102, 011302 (2020) A.D'Alessio, T.Mongelli, M.Arnold, S.Bassauer, J.Birkhan, I.Brandherm, M.Hilcker, T.Huther, J.Isaak, L.Jurgensen, T.Klaus, M.Mathy, P.von Neumann-Cosel, N.Pietralla, V.Yu.Ponomarev, P.C.Ries, R.Roth, M.Singer, G.Steinhilber, K.Vobig, V.Werner Precision measurement of the E2 transition strength to the 2+1 state of 12C NUCLEAR REACTIONS 12C(e, e'), E=42.5 MeV; measured scattered E(e), I(e) using the LINTOTT spectrometer at the Darmstadt S-DALINAC facility; deduced form factor, B(E2) and quadrupole moment for the first 2+ state in 12C. Comparison in-medium no-core shell model (IM-NCSM) calculations with NLO to N3LO interactions, and with previous experimental results.
doi: 10.1103/PhysRevC.102.011302
2020DO11 Phys.Rev. C 102, 064327 (2020) L.M.Donaldson, J.Carter, P.von Neumann-Cosel, V.O.Nesterenko, R.Neveling, P.-G.Reinhard, I.T.Usman, P.Adsley, C.A.Bertulani, J.W.Brummer, E.Z.Buthelezi, G.R.J.Cooper, R.W.Fearick, S.V.Fortsch, H.Fujita, Y.Fujita, M.Jingo, N.Y.Kheswa, W.Kleinig, C.O.Kureba, J.Kvasil, M.Latif, K.C.W.Li, J.P.Mira, F.Nemulodi, P.Papka, L.Pellegri, N.Pietralla, V.Yu.Ponomarev, B.Rebeiro, A.Richter, N.Yu.Shirikova, E.Sideras-Haddad, A.V.Sushkov, F.D.Smit, G.F.Steyn, J.A.Swartz, A.Tamii Fine structure of the isovector giant dipole resonance in 142-150Nd and 152Sm NUCLEAR REACTIONS 142,144,146,148,150Nd, 152Sm(p, p'), E=200 MeV from the Separated Sector Cyclotron (SSC) at iThemba LABS; measured reaction products, E(p), I(p), time-of-flight using the K600 magnetic spectrometer, two multiwire drift chambers (MWDCs) and two plastic scintillators; deduced double-differential σ(E*=10-22 MeV), equivalent photoabsorption spectra, excitation-energy spectra, wavelet power spectra, fine structure of the isovector giant-dipole resonance (IVGDR), fragmentation of the one-particle-one-hole (1p1h) strength into several dominant transitions serving as doorway states in the spherical and intermediate spherical/deformed nuclei. Comparison with predictions of quasiparticle phonon model (QPM), and Skyrme separable random phase approximation (SSRPA).
doi: 10.1103/PhysRevC.102.064327
2020KE07 Phys.Rev. C 102, 041304 (2020) R.Kern, R.Zidarova, N.Pietralla, G.Rainovski, R.Stegmann, A.Blazhev, A.Boukhari, J.Cederkall, J.G.Cubiss, M.Djongolov, C.Fransen, L.P.Gaffney, K.Gladnishki, E.Giannopoulos, H.Hess, J.Jolie, V.Karayonchev, L.Kaya, J.M.Keatings, D.Kocheva, Th.Kroll, O.Moller, G.G.O'Neill, J.Pakarinen, P.Reiter, D.Rosiak, M.Scheck, J.Snall, P.-A.Soderstrom, P.Spagnoletti, M.Stoyanova, S.Thiel, A.Vogt, N.Warr, A.Welker, V.Werner, J.Wiederhold, H.De Witte Restoring the valence-shell stabilization in 140Nd NUCLEAR REACTIONS 208Pb(140Nd, 140Nd'), E=4.62 MeV/nucleon, [140Nd beam from Ta(p, X), E=1.4 GeV at HIE-ISOLDE-CERN, and isotopic selection by RILIS and REXEBIS]; measured Eγ, Iγ, scattered particles, (particle)γ- and (particle)γγ-coin using Miniball array and double-sided silicon strip detector (DSSD). 140Nd; deduced levels, J, π, Coulomb excitation cross sections, B(E2), B(E3), B(M1) by analyzing data using multistep Coulomb-excitation least-squares fitting code GOSIA, identification of the third 2+ state as the main fragment of the one-quadrupole-phonon proton-neutron mixed-symmetry state, and degree of F-spin mixing. Systematics of B(M1) strengths for N=80 isotones of 132Te, 134Xe, 136Ba, 138Ce and 140Nd, and compared with theoretical predictions.
doi: 10.1103/PhysRevC.102.041304
2020KO03 Phys.Rev. C 101, 014303 (2020) P.Koseoglou, V.Werner, N.Pietralla, S.Ilieva, T.Niksic, D.Vretenar, P.Alexa, M.Thurauf, C.Bernards, A.Blanc, A.M.Bruce, R.B.Cakirli, N.Cooper, L.M.Fraile, G.de France, M.Jentschel, J.Jolie, U.Koster, W.Korten, T.Kroll, S.Lalkovski, H.Mach, N.Marginean, P.Mutti, Z.Patel, V.Paziy, Zs.Podolyak, P.H.Regan, J.-M.Regis, O.J.Roberts, N.Saed-Samii, G.S.Simpson, T.Soldner, C.A.Ur, W.Urban, D.Wilmsen, E.Wilson Low-Z boundary of the N=88-0 shape phase transition: 148Ce near the critical point NUCLEAR REACTIONS 235U(n, Fγ), E=cold neutrons from PF1B, ILL-Grenoble facility; measured Eγ, γγ-coin, half-lives of the first 2+ and 4+ levels in 148Ce by fast-timing technique using the EXILL-FATIMA array of eight EXOGAM clovers and 16 LaBr3(Ce) scintillators. 148Ce; deduced levels, B(E2) for the first 2+ 4+ states. Comparison with predictions of vibrator, rigid rotor, X(5) and X(5)-β8 models, and with previous experimental results. Systematics of E(first 4+)/E(first 2+) and energies of the yrast states for N=90 isotones 146Ba, 148Ce, 150Nd, 152Sm, 154Gd, 156Dy. NUCLEAR STRUCTURE 144,146,148Ce, 146,148,150Nd, 148,150,152,154Sm; calculated quantum shape phase transition (QSPT) lines in the IBM symmetry triangle using IBM-1 model. 148Ce; calculated self-consistent triaxial quadrupole constrained energy surfaces and probability distributions in in the β-γ plane using Axial Skyrme-Hartree-Fock-Bogoliubov model.
doi: 10.1103/PhysRevC.101.014303
2020LI15 Phys.Rev.Lett. 124, 222501 (2020) C.Lizarazo, P.-A.Soderstrom, V.Werner, N.Pietralla, P.M.Walker, G.X.Dong, F.R.Xu, T.R.Rodriguez, F.Browne, P.Doornenbal, S.Nishimura, CC.Nija, A.Obertelli, T.Ando, T.Arici, G.Authelet, H.Baba, A.Blazhev, A.M.Bruce, D.Calvet, R.J.Caroll, F.Chateau, S.Chen, L.X.Chung, A.Corsi, M.L.Cortes, A.Delbart, M.Dewald, B.Ding, F.Flavigny, S.Franchoo, J.Gerl, J.-M.Gheller, A.Giganon, A.Gillibert, M.Gorska, A.Gottardo, I.Kojouharov, N.Kurz, V.Lapoux, J.Lee, M.Lettmann, B.D.Linh, J.J.Liu, Z.Liu, S.Momiyama, K.Moschner, T.Motobayashi, S.Nagamine, N.Nakatsuka, M.Niikura, C.Nobs, L.Olivier, Z.Patel, N.Paul, Zs.Podolyak, J.-Y.Rousse, M.Rudigier, T.Y.Saito, H.Sakurai, C.Santamaria, H.Schaffner, C.Shand, I.Stefan, D.Steppenbeck, R.Taniuchi, T.Uesaka, V.Vaquero, K.Wimmer, Z.Xu Metastable States of 92, 94Se: Identification of an Oblate K Isomer of 94Se and the Ground-State Shape Transition between N = 58 and 60 NUCLEAR REACTIONS 9Be(238U, X)92Se/94Se, 1H(92Se, 92Se'), (94Se, 94Se'), E<345 MeV/nucleon; measured reaction products. 92,94Se; deduced γ-ray energies, J, π, isomeric state T1/2. Comparison with theoretical calculations.
doi: 10.1103/PhysRevLett.124.222501
2020MA44 Phys.Rev. C 102, 034308 (2020) E.V.Mardyban, E.A.Kolganova, T.M.Shneidman, R.V.Jolos, N.Pietralla Description of the low-lying collective states of 96Zr based on the collective Bohr Hamiltonian including the triaxiality degree of freedom NUCLEAR STRUCTURE 96Zr; calculated levels, J, π, B(E2), B(M1), quadrupole moment, ρ2 for E0 transitions, potential energy surfaces in (β, γ) planes using geometrical collective model for low-lying positive-parity states. Comparison with experimental data.
doi: 10.1103/PhysRevC.102.034308
2020PA32 Phys.Rev. C 102, 034323 (2020) O.Papst, V.Werner, J.Isaak, N.Pietralla, T.Beck, C.Bernards, M.Bhike, N.Cooper, B.P.Crider, U.Friman-Gayer, J.Kleemann, Krishichayan, B.Loher, F.Naqvi, E.E.Peters, F.M.Prados-Estevez, R.S.Ilieva, T.J.Ross, D.Savran, W.Tornow, J.R.Vanhoy Photo response of 164Dy NUCLEAR REACTIONS 164Dy(polarized γ, γ'), E=4.0-7.7 MeV; measured Eγ, Iγ, γ(polarization azimuthal asymmetry) using four HPGe detectors at the HIγS facility of TUNL. 164Dy; deduced levels, J, π, energy-integrated cross sections, widths, B(E1), B(M1), γ-branching ratios to the ground state and the first 2+ state, mean population ratios of the first and second 2+ states, and first 3+ state, photon strength function (PSF) and nuclear level density (NLD). Comparison with statistical model calculations.
doi: 10.1103/PhysRevC.102.034323
2020SO26 Commun. Phys. 11, 3242 (2020) P.-A.Soderstrom, L.Capponi, E.Aciksoz, T.Otsuka, N.Tsoneva, Y.Tsunoda, D.L.Balabanski, N.Pietralla, G.L.Guardo, D.Lattuada, H.Lenske, C.Matei, D.Nichita, A.Pappalardo, T.Petruse Electromagnetic character of the competitive γγ/γ-decay from 137mBa RADIOACTIVITY 137Cs(β-), 137Ba(IT); measured decay products, Eγ, Iγ, γ-γ-coin.; deduced γ-ray energies, widths and nuclear static dipole polarisabilities, angular correlation of the two photons emitted in the double-γ decay, Energy-sharing distribution for the two photons in the double-γ decay, an improved value on the double-photon versus single-photon branching ratio. Comparison with calculations. CeBr3 detectors from ELIGANT, the ELI Gamma Above Neutron Threshold (ELIGANT) detector system.
doi: 10.1038/s41467-020-16787-4
2020WI09 Phys.Rev. C 102, 044327 (2020) J.Wilhelmy, M.Muscher, G.Rusev, R.Schwengner, R.Beyer, M.Bhike, P.Erbacher, F.Fiedler, U.Friman-Gayer, J.Glorius, R.Greifenhagen, S.Hammer, T.Hensel, J.Isaak, A.R.Junghans, Krishichayan, B.Loher, S.E.Muller, N.Pietralla, S.Reinicke, D.Savran, P.Scholz, K.Sonnabend, T.Szucs, M.Tamkas, W.Tornow, S.Turkat, A.Wagner, A.Zilges Dipole response of 87Rb and its impact on the 86Rb (n, γ) 87Rb cross section NUCLEAR REACTIONS 87Rb(γ, γ'), E=8.2, 13.2 MeV bremsstrahlung beam; measured Eγ, Iγ, γ(θ) using four HPGe detectors at the γ-ELBE facility in Dresden. 87Rb(polarized γ, γ'), E=5.10, 5.30, 5.50, 5.75, 6.00, 6.25, 6.50, 6.75, 7.00, 7.25, 7.50, 7.80, 8.10, 8.40, 8.70, 9.00, 9.30, 9.60 MeV; measured Eγ, Iγ, azimuthal asymmetry using four LaBr3:Ce scintillators and four HPGe detectors at the HIγS facility of TUNL; deduced energy-integrated σ(excitation energy), γ-ray sum spectra, photoabsorption σ(E), E1-photon strength functions (PSFs), nuclear level densities (NLDs), Thomas-Reiche-Kuhn (TRK) sum rule. Comparison with QRPA calculations for PSFs, and microscopic Hartree-Fock-Bogolyubov calculations with Skyrme and Gogny forces for NLDs. 87Rb; deduced 256 discrete levels from 845 to 10005 keV, J, π, gΓ02/Γ, γ-ray branching ratios for selected levels, as listed in supplemental material. 86Rb(n, γ), kT=5-100 keV; deduced Maxwellian cross sections (MACSs) for different PSF and NLD inputs, and compared to data in KADoNiS database.
doi: 10.1103/PhysRevC.102.044327
2020YA24 Eur.Phys.J. A 56, 246 (2020) A.Yaneva, D.Kocheva, G.Rainovski, J.Jolie, N.Pietralla, A.Blazhev, A.Dewald, M.Djongolov, C.Fransen, K.A.Gladnishki, C.Henrich, I.Homm, K.E.Ide, P.R.John, D.Kalaydjieva, V.Karayonchev, R.Kern, J.Kleemann, Th.Kroll, C.Muller-Gatermann, M.Scheck, P.Spagnoletti, M.Stoyanova, V.Werner Experimental evidence for low-lying quadrupole isovector excitation of 208Po NUCLEAR REACTIONS 204Pb(12C, 8Be), E=62 MeV; measured reaction products, Eγ, Iγ, γ-γ-coin. 208Po; deduced γ-ray energies and intensities, level lifetimes, B(E2), B(M1) using the Doppler-shift attenuation method.
doi: 10.1140/epja/s10050-020-00259-w
2019DA02 Phys.Rev. C 99, 021302 (2019) P.J.Davies, J.Park, H.Grawe, R.Wadsworth, R.Gernhauser, R.Krucken, F.Nowacki, D.S.Ahn, F.Ameil, H.Baba, T.Back, B.Blank, A.Blazhev, P.Boutachkov, F.Browne, I.Celikovic, M.Dewald, P.Doornenbal, T.Faestermann, Y.Fang, G.de France, N.Fukuda, A.Gengelbach, J.Gerl, J.Giovinazzo, S.Go, N.Goel, M.Gorska, E.Gregor, H.Hotaka, S.Ilieva, N.Inabe, T.Isobe, D.G.Jenkins, J.Jolie, H.S.Jung, A.Jungclaus, D.Kameda, G.D.Kim, Y.-K.Kim, I.Kojouharov, T.Kubo, N.Kurz, M.Lewitowicz, G.Lorusso, D.Lubos, L.Maier, E.Merchan, K.Moschner, D.Murai, F.Naqvi, H.Nishibata, D.Nishimura, S.Nishimura, I.Nishizuka, Z.Patel, N.Pietralla, M.M.Rajabali, S.Rice, H.Sakurai, H.Schaffner, Y.Shimizu, L.F.Sinclair, P.-A.Soderstrom, K.Steiger, T.Sumikama, H.Suzuki, H.Takeda, J.Taprogge, P.Thole, S.Valder, Z.Wang, N.Warr, H.Watanabe, V.Werner, J.Wu, Z.Y.Xu, A.Yagi, K.Yoshinaga, Y.Zhu Toward the limit of nuclear binding on the N=Z line: Spectroscopy of 96Cd NUCLEAR REACTIONS 9Be(124Xe, X), E=345 MeV/nucleon; measured delayed γ-spectrum, Eγ, Iγ, γγ-coin, half-life of an isomeric state using BigRIPS separator, silicon active stopper for particle identification, and EURICA Ge detector array for γ detection at RIBF-RIKEN. 96Cd; deduced levels, isomer, J, π, configuration, medium-spin negative-parity spin trap based on the coupling of isoscalar T=0 and isovector T=1 neutron-proton pairs. Comparison with shell model calculations using GF, LSSM, and r3g model spaces.
doi: 10.1103/PhysRevC.99.021302
2019GA26 Phys.Rev. C 100, 034305 (2019) U.Gayer, T.Beck, M.Bhike, J.Isaak, N.Pietralla, P.C.Ries, D.Savran, M.Schilling, W.Tornow, V.Werner Experimental M1 response of 40Ar as a benchmark for neutrino-nucleus scattering calculations NUCLEAR REACTIONS 40Ar(polarized γ, γ'), E=4.44, 5.40, 5.65, 5.90, 6.10, 6.30, 6.50, 6.70, 6.90, 7.22, 7.55 MeV from High-Intensity γ-Ray Source (HIγS) at TUNL; measured Eγ, Iγ, azimuthal asymmetry using four HPGe detectors. 40Ar; deduced levels, J, π, integrated cross sections, lower limits for B(E1) and B(M1), average branching ratio to the first 2+ state, B(E1), B(M1), total M1 strength; results provide constraints on theoretical cross section of solar and supernova neutrinos with 40Ar. Comparison with large-scale shell model shell-model calculations for 1+ states in the sdfp space. Comparison with previous experimental results and evaluated data in the ENSDF database. Benchmarking of inelastic neutral current neutrino-nucleus scattering cross sections.
doi: 10.1103/PhysRevC.100.034305
2019HA26 Phys.Rev. C 100, 024302 (2019) G.Hafner, K.Moschner, A.Blazhev, P.Boutachkov, P.J.Davies, R.Wadsworth, F.Ameil, H.Baba, T.Back, M.Dewald, P.Doornenbal, T.Faestermann, A.Gengelbach, J.Gerl, R.Gernhauser, S.Go, M.Gorska, H.Grawe, E.Gregor, H.Hotaka, T.Isobe, D.G.Jenkins, J.Jolie, H.S.Jung, I.Kojouharov, N.Kurz, M.Lewitowicz, G.Lorusso, R.Lozeva, E.Merchan, F.Naqvi, H.Nishibata, D.Nishimura, S.Nishimura, N.Pietralla, H.Schaffner, P.-A.Soderstrom, K.Steiger, T.Sumikama, J.Taprogge, P.Thole, H.Watanbe, N.Warr, V.Werner, Z.Y.Xu, A.Yagi, K.Yoshinaga, Y.Zhu Properties of gamma-decaying isomers in the 100Sn region populated in fragmentation of a 124Xe beam NUCLEAR REACTIONS 9Be(124Xe, X)88Zr/88mZr/90Nb/90mNb/90Mo/90mMo/91Nb/91mNb/92Nb/92mNb/92Mo/92mMo/92Tc/92mTc/92Ru/92mRu/92Rh/92mRh/93Tc/93mTc/93Ru/93mRu/94Ru/94mRu/94Rh/94mRh/94Pd/94mPd/95Ag/95mAg/96Pd/96mPd/96Ag/96mAg/96Cd/96mCd/98Ag/98mAg/98Cd/98mCd, E=345 MeV/nucleon; measured yields of secondary ions by A/Q vs Z, Eγ, Iγ, (ion)γ-coin, isomeric ratios using BigRIPS and ZeroDegree spectrometers, active stopper SIMBA, and EURICA array at RIBF-RIKEN facility. Comparison of isomeric ratios with previous experimental results, and with abrasion-ablation model combined with sharp cutoff model. RADIOACTIVITY 88mZr, 90mNb, 90m,92mMo, 92m,93mTc, 92m,93m,94mRu, 92mRh, 94m,96mPd, 96m,98mAg, 98mCd(IT); measured Eγ, Iγ, γγ- and (ion)γ-coin, half-lives of isomers (0.1-104 μs) by γ(t). 88Zr, 90Nb, 90,92Mo, 92,93Tc, 92,93,94Ru, 92Rh, 94,96Pd, 96,98Ag, 98Cd; deduced levels, J, π, B(E1), B(E2), B(E3), B(E4). Comparison with shell model calculations using NUSHELLX code and SLGT0PN interaction.
doi: 10.1103/PhysRevC.100.024302
2019HA40 Acta Phys.Pol. B50, 431 (2019) G.Haefner, K.Moschner, A.Blazhev, P.Boutachkov, P.J.Davies, R.Wadsworth, F.Ameil, H.Baba, T.Back, M.Dewald, P.Doornenbal, T.Faestermann, A.Gengelbach, J.Gerl, R.Gernhauser, S.Go, M.Gorska, H.Grawe, E.Gregor, H.Hotaka, T.Isobe, D.G.Jenkins, J.Jolie, H.S.Jung, I.Kojouharov, N.Kurz, M.Lewitowicz, G.Lorusso, E.Merchan, F.Naqvi, H.Nishibata, D.Nishimura, S.Nishimura, N.Pietralla, H.Schaffner, P.-A.Soderstrom, K.Steiger, T.Sumikama, J.Taprogge, P.Thole, H.Watanabe, N.Warr, V.Werner, Z.Y.Xu, A.Yagi, K.Yoshinaga, Y.Zhu Properties of γ-decaying Isomers in the 100Sn Region Revisited NUCLEAR REACTIONS 9Be(124Xe, X), E=345 MeV/nucleon; measured reaction products, Eγ, Iγ, γγ-coin; deduced T1/2 of isomeric states and isomeric ratios. BigRIPS, ZeroDegree spectrometer, WAS3ABi and EURICA array at RIBF-RIKEN facility. Comparison of isomeric ratios with abrasion-ablation model combined with sharp cutoff model. RADIOACTIVITY 90Mo, 92Rh, 96Ag(IT) [from 9Be(124Xe, X), E=345 MeV/nucleon]; measured reaction products, Eγ, Iγ, γγ-coin; deduced levels, J, π, T1/2.
doi: 10.5506/aphyspolb.50.431
2019IS02 Phys.Lett. B 788, 225 (2019) J.Isaak, D.Savran, B.Loher, T.Beck, M.Bhike, U.Gayer, Krishichayan, N.Pietralla, M.Scheck, W.Tornow, V.Werner, A.Zilges, M.Zweidinger The concept of nuclear photon strength functions: A model-independent approach via (γ(pol), g'γ") reactions NUCLEAR REACTIONS 128Te(polarized γ, γ'γ'), E=3-9 MeV; measured reaction products, Eγ, Iγ, γ-γ-coin.; deduced lack of a unique photon strength function consistent with the uncertainties of the measurement.
doi: 10.1016/j.physletb.2018.11.038
2019KE01 Phys.Rev. C 99, 011303 (2019) R.Kern, R.Stegmann, N.Pietralla, G.Rainovski, M.P.Carpenter, R.V.F.Janssens, M.Lettmann, O.Moller, T.Moller, C.Stahl, V.Werner, S.Zhu Nuclear isovector valence-shell excitation of 202Hg NUCLEAR REACTIONS 12C(202Hg, 202Hg'), E=890 MeV; measured Eγ, Iγ, γ(θ), γγ-coin using the Gammasphere array at ATLAS-ANL facility. 202Hg; deduced levels, J, π, multipolarities, mixing ratios, B(E1), B(E2), B(E3), B(M1), mixed-symmetry 2+ state, upper limits for the F-spin mixing matrix elements from analysis of data for 136Ba, 138Ce, 202Hg, and 204Hg. Comparison with previous experimental values in the Nuclear Data Sheets.
doi: 10.1103/PhysRevC.99.011303
2019PI13 Eur.Phys.J. A 55, 237 (2019) N.Pietralla, J.Isaak, V.Werner Photonuclear reactions: Achievements and perspectives
doi: 10.1140/epja/i2019-12857-4
2019RA28 Phys.Lett. B 797, 134797 (2019) D.Ralet, E.Clement, G.Georgiev, A.E.Stuchbery, M.Rejmund, P.Van Isacker, G.de France, A.Lemasson, J.Ljungvall, C.Michelagnoli, A.Navin, D.L.Balabanski, L.Atanasova, A.Blazhev, G.Bocchi, R.Carroll, J.Dudouet, E.Dupont, B.Fornal, S.Franchoo, C.Fransen, C.Muller-Gatermann, A.Goasduff, A.Gadea, P.R.John, D.Kocheva, T.Konstantinopoulos, A.Korichi, A.Kusoglu, S.M.Lenzi, S.Leoni, R.Lozeva, A.Maj, R.Perez, N.Pietralla, C.Shand, O.Stezowski, D.Wilmsen, D.Yordanov, D.Barrientos, P.Bednarczyk, B.Birkenbach, A.J.Boston, H.C.Boston, I.Burrows, B.Cederwall, M.Ciemala, J.Collado, F.Crespi, D.Cullen, H.J.Eberth, J.Goupil, L.Harkness, H.Hess, A.Jungclaus, W.Korten, M.Labiche, R.Menegazzo, D.Mengoni, B.Million, J.Nyberg, Zs.Podolyak, A.Pullia, B.Quintana Arnes, F.Recchia, P.Reiter, F.Saillant, M.D.Salsac, E.Sanchis, C.Theisen, J.J.Valiente Dobon, O.Wieland Evidence of octupole-phonons at high spin in 207Pb NUCLEAR REACTIONS 100Mo(208Pb, 207Pb), E=6.25 MeV/nucleon; measured reaction products, Eγ, Iγ. 207Pb; deduced γ-ray energies, T1/2, B(E3) for 19/2- state. Recoil Distance Doppler-Shift (RDDS) method.
doi: 10.1016/j.physletb.2019.134797
2019RI02 Phys.Rev. C 100, 021301R (2019) P.C.Ries, H.Pai, T.Beck, J.Beller, M.Bhike, V.Derya, U.Gayer, J.Isaak, B.Loher, Krishichayan, L.Mertes, N.Pietralla, C.Romig, D.Savran, M.Schilling, W.Tornow, S.Typel, V.Werner, J.Wilhelmy, A.Zilges, M.Zweidinger Valence-shell dependence of the pygmy dipole resonance: E1 strength difference in 50, 54Cr NUCLEAR REACTIONS 50,54Cr(γ, γ'), (polarized γ, γ'), E=7.5, 9.5 MeV bremsstrahlung beam from Darmstadt, and 5.5-9.8 MeV Compton-scattered polarized beam from TUNL; measured Eγ, Iγ, azimuthal angular distributions, integrated cross sections using nuclear resonance fluorescence (NRF) method at the Darmstadt High Intensity Photon Setup (DHIPS), and at the High-Intensity γ-ray Source facility (HIγS) of TUNL. 50,54Cr; deduced levels, pygmy dipole resonances (PDR), J, π, widths of transitions to g.s., branching ratios, B(E1), B(M1), B(E2), Thomas-Reiche-Kuhn (TRK) energy-weighted sum rule for 50,52,54Cr; calculated neutron skin thicknesses for 48,49,50,51,52,53,54,55,56Cr.
doi: 10.1103/PhysRevC.100.021301
2019SA20 Phys.Rev. C 99, 031304 (2019) D.A.Sazonov, E.A.Kolganova, T.M.Shneidman, R.V.Jolos, N.Pietralla, W.Witt Description of shape coexistence in 96Zr based on the quadrupole-collective Bohr Hamiltonian NUCLEAR STRUCTURE 96Zr; calculated low-lying levels, J, π, B(E2), B(M1), ρ2 for E0 transitions, quadrupole moment for 2+, wave functions of the first and second 0+ and 2+ states, and shape coexistent potential using quadrupole-collective Bohr Hamiltonian with the potential having two minima corresponding to spherical and deformed shapes. Comparison with experimental values.
doi: 10.1103/PhysRevC.99.031304
2019SH18 Phys.Rev. C 99, 044319 (2019) N.Yu.Shirikova, A.V.Sushkov, R.V.Jolos, N.Pietralla, T.Beck Excitation energy dependence of the moments of inertia of well deformed nuclei NUCLEAR STRUCTURE 156,158Gd, 160,162,164Dy, 166Er, 178Hf; calculated energies and moments of inertia of 2+ γ-vibrational states, and Kπ=1+ excited states using quasiparticle phonon model with a mean field part, monopole pairing, and multipole-multipole residual interaction; discussed contribution from blocking effect and the Coriolis coupling between quasiparticles and the rotating core. Comparison with experimental data.
doi: 10.1103/PhysRevC.99.044319
2019SO22 Acta Phys.Pol. B50, 329 (2019) P.-A.Soderstrom, G.Suliman, C.A.Ur, D.Balabanski, T.Beck, L.Capponi, A.Dhal, V.Iancu, S.Ilie, M.Iovea, A.Kusoglu, C.Petcu, N.Pietralla, G.V.Turturica, E.Udup, J.Wilhelmy, A.Zilges High-resolution Gamma-ray Spectroscopy with ELIADE at the Extreme Light Infrastructure
doi: 10.5506/aphyspolb.50.329
2019ST13 Phys.Rev. C 100, 064304 (2019) M.Stoyanova, G.Rainovski, J.Jolie, N.Pietralla, A.Blazhev, M.Beckers, A.Dewald, M.Djongolov, A.Esmaylzadeh, C.Fransen, L.M.Gerhard, K.A.Gladnishki, S.Herb, P.R.John, V.Karayonchev, J.M.Keatings, R.Kern, L.Knafla, D.Kocheva, L.Kornwebel, Th.Kroll, M.Ley, K.M.Mashtakov, C.Muller-Gatermann, J.-M.Regis, M.Scheck, K.Schomacker, J.Sinclair, P.Spagnoletti, C.Surder, N.Warr, V.Werner, J.Wiederhold Lifetimes of the 4+1 states of 206Po and 204Po: A study of the transition from noncollective seniority-like mode to collectivity NUCLEAR REACTIONS 197Au(11B, 4n)204Po, E=55 MeV; 198Pt(12C, 4n)206Po, E=65 MeV; measured Eγ, Iγ, γγ-coin, level half-lives by γγ(t) fast timing technique using the HORUS spectrometer of the FN Tandem facility at the University of Cologne. 204,206Po; deduced levels, J, π, B(E2) for the first 4+ states in both the isotopes, and for the first 2+ in 204Po, configurations; discussed transition from single-particle seniority like mode to collective mode. Comparison with two-state mixing calculations. Systematics of energies, R4/2 ratios, B(E2) and magnetic moments for the yrast levels in 200,202,204,206,208,210Po.
doi: 10.1103/PhysRevC.100.064304
2019TA11 Nucl.Phys. A987, 79 (2019) M.Tamkas, E.Aciksoz, J.Isaak, T.Beck, N.Benouaret, M.Bhike, I.Boztosun, A.Durusoy, U.Gayer, Krishichayan, B.Loher, N.Pietralla, D.Savran, W.Tornow, V.Werner, A.Zilges, M.Zweidinger Low-lying dipole strength in the well-deformed nucleus 156Gd NUCLEAR REACTIONS 156Gd(γ, γ), E=7.1 MeV[bremsstrahlung end-point energy]; measured Eγ, Iγ using three HPGe with BGO active anti-Compton shield; deduced γ-ray energy spectra; 156Gd(polarized γ, γ), E=2.9-6.2 MeV[linearly polarized quasi-monochromatical photon beams from laser Compton backscattering]; measured Eγ, Iγ, γγ-coin at High Intensity γ-ray Source (HIγS) at TUNL; deduced γ-ray measured and deconvoluted energy spectra, asymmetries for observed single states and average asymmetry for each beam energy setting using deconvoluted spectra, expectation B(E1), B(M1) transition values; deduced, extracted photo absorption σγ vs E* and its decomposition to the gs and to the first excited state.
doi: 10.1016/j.nuclphysa.2019.03.014
2019WI02 Phys.Rev. C 99, 024316 (2019) J.Wiederhold, V.Werner, R.Kern, N.Pietralla, D.Bucurescu, R.Carroll, N.Cooper, T.Daniel, D.Filipescu, N.Florea, R-B.Gerst, D.Ghita, L.Gurgi, J.Jolie, R.S.Ilieva, R.Lica, N.Marginean, R.Marginean, C.Mihai, I.O.Mitu, F.Naqvi, C.Nita, M.Rudigier, S.Stegemann, S.Pascu, P.H.Regan Evolution of E2 strength in the rare-earth isotopes 174, 176, 178, 180Hf NUCLEAR REACTIONS 180Hf(16O, 16O), E=55 MeV; measured Eγ, Iγ, γγ-coin, half-lives of first 2+, 4+ and 6+ states by fast-timing γγ-coin using the ROSPHERE detector array for γ detection at the Bucharest FN Tandem accelerator. 180Hf; deduced levels, B(E2) values and B(E2) ratios. Comparison with literature values. RADIOACTIVITY 174,176,178Ta(EC), (β+)[from 171Yb(6Li, 3n), 172,173Yb(7Li, 3n), E=30 MeV]; measured Eγ, Iγ, γγ-coin, half-lives of first 2+, 4+, 6+ states, and first 2- and 3- states in 176Hf by fast-timing γγ-coin using the ROSPHERE detector array for γ detection at the Bucharest FN Tandem accelerator. 174,176,178Hf; deduced levels, B(E2) for 174,176,178Hf, and B(E1), B(M2), B(E3) for 176Hf. Systematics of g factors and B(E2) of first excited 2+ states, β4 deformation parameters in 156,158,160,162,164,166,168,170Er, 158,160,162,164,166,168,170,172,174,176Yb, 162,164,166,168,170,172,174,176,178,180Hf, 168,170,172,174,180,182,184,186W, 178,180,182,184Os. Comparison with values obtained in the rigid rotor limit and in the vibrator limit.
doi: 10.1103/PhysRevC.99.024316
2019WI05 Eur.Phys.J. A 55, 79 (2019) W.Witt, N.Pietralla, V.Werner, T.Beck Data on the structural coexistence in the 96Zr nucleus NUCLEAR STRUCTURE 96Zr; calculated, deduced low-energy levels, J, π, B(E2), B(M1) transition strengths, γ-ray transitions using the available experimental data.
doi: 10.1140/epja/i2019-12754-x
2018CI02 Acta Phys.Pol. B49, 561 (2018) N.Cieplicka-Orynczak, C.Michelagnoli, S.Leoni, B.Fornal, G.Benzoni, A.Blanc, S.Bottoni, F.C.L.Crespi, L.W.Iskra, M.Jentschel, U.Koster, P.Mutti, N.Pietralla, E.Ruiz-Martinez, V.Werner The Low-spin Structure of 206Tl Studied by γ-ray Spectroscopy from Thermal Neutron Capture Reaction NUCLEAR REACTIONS 205Tl(n, γ)206Tl, E=thermal; measured Eγ, Iγ(θ), γγ-coin using FIPPS prompt γ-ray spectrometer (ILL); deduced 206Tl levels, J, π, especially at lower energies and low spins, relative σ(θ); calculated levels, J, π using shell model describing proton-hole and neutron-hole couplings near doubly magic 208Pb.
doi: 10.5506/aphyspolb.49.561
2018CO06 Phys.Rev. C 97, 044315 (2018) M.L.Cortes, P.Doornenbal, M.Dupuis, S.M.Lenzi, F.Nowacki, A.Obertelli, S.Peru, N.Pietralla, V.Werner, K.Wimmer, G.Authelet, H.Baba, D.Calvet, F.Chateau, A.Corsi, A.Delbart, J.-M.Gheller, A.Gillibert, T.Isobe, V.Lapoux, C.Louchart, M.Matsushita, S.Momiyama, T.Motobayashi, M.Niikura, H.Otsu, C.Peron, A.Peyaud, E.C.Pollacco, J.-Y.Rousse, H.Sakurai, C.Santamaria, M.Sasano, Y.Shiga, S.Takeuchi, R.Taniuchi, T.Uesaka, H.Wang, K.Yoneda, F.Browne, L.X.Chung, Zs.Dombradi, S.Franchoo, F.Giacoppo, A.Gottardo, K.Hadynska-Klek, Z.Korkulu, S.Koyama, Y.Kubota, J.Lee, M.Lettmann, R.Lozeva, K.Matsui, T.Miyazaki, S.Nishimura, L.Olivier, S.Ota, Z.Patel, E.Sahin, C.M.Shand, P-A.Soderstrom, I.Stefan, D.Steppenbeck, T.Sumikama, D.Suzuki, Zs.Vajta, J.Wu, Z.Xu Inelastic scattering of neutron-rich Ni and Zn isotopes off a proton target NUCLEAR REACTIONS 1H(72Ni, p'), E=271.0 MeV/nucleon; 1H(74Ni, p'), E=263.5 MeV/nucleon; 1H(76Zn, p'), E=275.5 MeV/nucleon; 1H(80Zn, p'), E=263.4 MeV/nucleon, [secondary 72,74Ni, 76,80Zn beams from 9Be(238U, X), E=345 MeV/nucleon primary reaction, followed by separation of fragments using BigRIPS separator]; measured reaction products, yields, Eγ, Iγ, particles, (particle)γ-coin, angular integrated proton inelastic scattering σ using MINOS target device, DALI2 array for γ detection and ZeroDegree spectrometer for particles at RIBF-RIKEN facility. 72,74Ni, 76,80Zn; deduced first 2+ and 4+ levels, and second 2+ levels in 72,74Ni; analyzed B(E2) values and matrix elements for the first 2+ states. Comparison with shell-model calculations, and with previous measurements. Systematics of β2 deformation parameters in 62Zn to 80Zn, and 54Ni to 74Ni isotopes. Comparison of experimental σ for inelastic scattering with calculations using Jeukenne-Lejeune-Mahaux (JLM) folding model with quasiparticle random-phase approximation (QRPA). 58Ni(p, p), E=295, 250, 333 MeV; 58Ni(p, p'), E=178 MeV; analyzed σ(θ) data using the JLM reaction model and KD02 potential.
doi: 10.1103/PhysRevC.97.044315
2018DI14 Phys.Rev. C 98, 054314 (2018) B.Dietz, B.A.Brown, U.Gayer, N.Pietralla, V.Yu.Ponomarev, A.Richter, P.C.Ries, V.Werner Chaos and regularity in the spectra of the low-lying dipole excitations of 50, 52, 54Cr NUCLEAR STRUCTURE 50,52,54Cr; analyzed experimental B(M1) strengths for 1+ states from orbital magnetic-dipole scissors mode, and sizable spin-flip magnetic-dipole strength, and experimental B(E1) strengths for 1- states belonging to the pygmy dipole resonances (PDRs) through random matrix theory (RMT) to analyze fluctuation properties in the subspectra of the energy levels; deduced Gaussian orthogonal ensemble (GOE) for 1+ states, and nearly Poissonian behavior for the 1- states, suggesting collective behavior of the PDRs. Relevance to nuclear resonance fluorescence experiments at the Superconducting Darmstadt Electron Linear Accelerator (S-DALINAC), and the high intensity γ-ray source (HIγS) of the Triangle Universities Nuclear Laboratory (TUNL).
doi: 10.1103/PhysRevC.98.054314
2018DO01 Phys.Lett. B 776, 133 (2018) L.M.Donaldson, C.A.Bertulani, J.Carter, V.O.Nesterenko, P.von Neumann-Cosel, R.Neveling, V.Yu.Ponomarev, P.-G.Reinhard, I.T.Usman, P.Adsley, J.W.Brummer, E.Z.Buthelezi, G.R.J.Cooper, R.W.Fearick, S.V.Fortsch, H.Fujita, Y.Fujita, M.Jingo, W.Kleinig, C.O.Kureba, J.Kvasil, M.Latif, K.C.W.Li, J.P.Mira, F.Nemulodi, P.Papka, L.Pellegri, N.Pietralla, A.Richter, E.Sideras-Haddad, F.D.Smit, G.F.Steyn, J.A.Swartz, A.Tamii Deformation dependence of the isovector giant dipole resonance: The neodymium isotopic chain revisited NUCLEAR REACTIONS 144,146,148,150Nd, 152Sm(p, p'), E=200 MeV; measured reaction products, Eγ, Iγ; deduced σ, σ(θ, E), σ(θ). Comparison with DWBA calculations.
doi: 10.1016/j.physletb.2017.11.025
2018LI20 Phys.Rev. C 97, 044323 (2018) J.Litzinger, A.Blazhev, A.Dewald, F.Didierjean, G.Duchene, C.Fransen, R.Lozeva, D.Verney, G.de Angelis, D.Bazzacco, B.Birkenbach, S.Bottoni, A.Bracco, T.Braunroth, B.Cederwall, L.Corradi, F.C.L.Crespi, P.Desesquelles, J.Eberth, E.Ellinger, E.Farnea, E.Fioretto, R.Gernhauser, A.Goasduff, A.Gorgen, A.Gottardo, J.Grebosz, M.Hackstein, H.Hess, F.Ibrahim, J.Jolie, A.Jungclaus, K.Kolos, W.Korten, S.Leoni, S.Lunardi, A.Maj, R.Menegazzo, D.Mengoni, C.Michelagnoli, T.Mijatovic, B.Million, O.Moller, V.Modamio, G.Montagnoli, D.Montanari, A.I.Morales, D.R.Napoli, M.Niikura, N.Pietralla, G.Pollarolo, A.Pullia, B.Quintana, F.Recchia, P.Reiter, D.Rosso, E.Sahin, M.D.Salsac, F.Scarlassara, P.-A.Soderstrom, A.M.Stefanini, O.Stezowski, S.Szilner, Ch.Theisen, J.J.Valiente-Dobon, V.Vandone, A.Vogt Transition probabilities in neutron-rich 80, 82Se and the role of the νg9/2 NUCLEAR REACTIONS 238U(82Se, 80Se), (82Se, 82Se'), E=577 MeV; measured Eγ, Iγ, 80,82Se scattered particles, (particle)γ-coin, total-kinetic energy losses (TKEL), level half-lives by recoil distance Doppler-shift (RDDS) method using Cologne plunger device, AGATA Demonstrator array for γ detection, and PRISMA magnetic spectrometer for particle detection at the INFNLN-Legnaro. 80,82Se; deduced levels, J, π, B(E2), B(M1), B(E1), configurations. Comparison with large-scale shell-model calculations using the effective interactions JUN45 and jj44b. Systematics of energies and B(E1) values for N=44-48, Kr, Se and Ge isotopes.
doi: 10.1103/PhysRevC.97.044323
2018SA49 Phys.Lett. B 786, 16 (2018) D.Savran, V.Derya, S.Bagchi, J.Endres, M.N.Harakeh, J.Isaak, N.Kalantar-Nayestanaki, E.G.Lanza, B.Loher, A.Najafi, S.Pascu, S.G.Pickstone, N.Pietralla, V.Yu.Ponomarev, C.Rigollet, C.Romig, M.Spieker, A.Vitturi, A.Zilges Multi-messenger investigation of the Pygmy Dipole Resonance in 140Ce NUCLEAR REACTIONS 140Ce(p, p'), E=80 MeV; measured reaction products, Eγ, Iγ; deduced σ(θ), Pygmy Dipole Resonance single excitations. Comparison with the Quasi-particle Phonon Model calculations.
doi: 10.1016/j.physletb.2018.09.025
2018SE05 Eur.Phys.J. A 54, 4 (2018) A.P.Severyukhin, N.N.Arsenyev, N.Pietralla, V.Werner Proton-neutron structure of first and second quadrupole excitations of 90Sr NUCLEAR STRUCTURE 88,90Sr, 90,92Zr; calculated 2+1, 2+2 quadrupole excitation energy, structure, B(E2), B(M1), g-factors using Skyrme interaction together with density-dependent pairing interaction. Compared with available and extrapolated data.
doi: 10.1140/epja/i2018-12451-4
2018WI07 Phys.Rev. C 98, 034315 (2018) J.Wilhelmy, A.Brown, P.Erbacher, U.Gayer, J.Isaak, Krishichayan, B.Loher, M.Muscher, H.Pai, N.Pietralla, P.Ries, D.Savran, P.Scholz, M.Spieker, W.Tornow, V.Werner, A.Zilges Investigation of J=1 states and their γ-decay behavior in 52Cr NUCLEAR REACTIONS 52Cr(polarized γ, γ'), E=5.5-9.2 MeV; measured Eγ, Iγ of primary and secondary γ rays, energy integrated σ in nuclear resonance fluorescence (NRF) experiments using γ3 array at the HIγS-TUNL facility. 52Cr; deduced levels, J, π, Γ0, γ-branching ratios, B(M1), B(E1), summed M1 strength. Comparison with shell model calculations, and previous experimental results.
doi: 10.1103/PhysRevC.98.034315
2018WI09 Phys.Rev. C 98, 041302 (2018) W.Witt, V.Werner, N.Pietralla, M.Albers, A.D.Ayangeakaa, B.Bucher, M.P.Carpenter, D.Cline, H.M.David, A.Hayes, C.Hoffman, R.V.F.Janssens, B.P.Kay, F.G.Kondev, W.Korten, T.Lauritsen, O.Moller, G.Rainovski, G.Savard, D.Seweryniak, J.Smith, R.Stegmann, S.Zhu, C.Y.Wu Sub-shell closure and shape coexistence in the transitional nucleus 98Zr NUCLEAR REACTIONS 196Pt(98Zr, 98Zr'), E=464 MeV from CARIBU source at ATLAS-ANL facility; measured recoils, Eγ, Iγ, (recoil)γ-coin using CHICO2 array of segmented parallel-plate avalanche counter (PPAC) for recoil detection, and GRETINA array of segmented HPGe detectors for γ detection. Coulomb excitation. 98Zr; deduced levels, upper limit of B(E2) for the first 2+ state. Comparison with shell model and Monte-Carlo shell model calculations, and with previous experimental values. Systematics of B(E2) values for the first 2+ states in 90,92,94,96,98,100,102,104,106Zr.
doi: 10.1103/PhysRevC.98.041302
2017BE10 Phys.Rev.Lett. 118, 212502 (2017) T.Beck, J.Beller, N.Pietralla, M.Bhike, J.Birkhan, V.Derya, U.Gayer, A.Hennig, J.Isaak, B.Loher, V.Yu.Ponomarev, A.Richter, C.Romig, D.Savran, M.Scheck, W.Tornow, V.Werner, A.Zilges, M.Zweidinger E2 decay strength of the M1 scissors mode of 156Gd and its first excited rotational state NUCLEAR REACTIONS 156Gd(γ, γ'), E=3.07 MeV; measured reaction products, Eγ, Iγ; deduced relative intensities for transitions, B(M1), B(E2), multipole mixing ratio of the decay transition from the scissors mode to the 2+1 state in a deformed nucleus.
doi: 10.1103/PhysRevLett.118.212502
2017BI09 Phys.Rev.Lett. 118, 252501 (2017) J.Birkhan, M.Miorelli, S.Bacca, S.Bassauer, C.A.Bertulani, G.Hagen, H.Matsubara, P.von Neumann-Cosel, T.Papenbrock, N.Pietralla, V.Yu.Ponomarev, A.Richter, A.Schwenk, A.Tamii Electric Dipole Polarizability of 48Ca and Implications for the Neutron Skin NUCLEAR REACTIONS 48Ca(p, p'), E=295 MeV; 48Ca(γ, X), E<25 MeV; measured reaction products; deduced σ, electric dipole polarizability, B(E1).
doi: 10.1103/PhysRevLett.118.252501
2017DA07 Phys.Lett. B 767, 474 (2017) P.J.Davies, H.Grawe, K.Moschner, A.Blazhev, R.Wadsworth, P.Boutachkov, F.Ameil, A.Yagi, H.Baba, T.Back, M.Dewald, P.Doornenbal, T.Faestermann, A.Gengelbach, J.Gerl, R.Gernhaeuser, S.Go, M.Gorska, E.Gregor, T.Isobe, D.G.Jenkins, H.Hotaka, J.Jolie, I.Kojouharov, N.Kurz, M.Lewitowicz, G.Lorusso, L.Maier, E.Merchan, F.Naqvi, H.Nishibata, D.Nishimura, S.Nishimura, F.Nowacki, N.Pietralla, H.Schaffner, P.-A.Soderstrom, H.S.Jung, K.Steiger, T.Sumikama, J.Taprogge, P.Thole, N.Warr, H.Watanabe, V.Werner, Z.Y.Xu, K.Yoshinaga, Y.Zhu The role of core excitations in the structure and decay of the 16+ spin-gap isomer in 96Cd RADIOACTIVITY 96Cd(EC), (ECp), 95Cd(EC) [from 9Be(124Xe, X)96Cd/95Cd, E=345 MeV/nucleon]; measured decay products, Eβ, Iβ, Eγ, Iγ, Ep, Ip; deduced first evidence for β-delayed proton emission, βp branching ratios, precise T1/2 for the ground and isomeric states. Comparison with shell model calculations employing the Gross-Frenkel (GF) effective interaction.
doi: 10.1016/j.physletb.2017.02.013
2017DO13 Eur.Phys.J. A 53, 211 (2017) M.Doncel, A.Gadea, J.J.Valiente-Dobon, B.Quintana, V.Modamio, D.Mengoni, O.Moller, A.Dewald, N.Pietralla Determination of lifetimes of nuclear excited states using the Recoil Distance Doppler Shift Method in combination with magnetic spectrometers NUCLEAR REACTIONS 238U(76Ge, 76Ge'), (76Ge, 72Zn), E=577 MeV; measured Eγ, Iγ using γ-ray array AGATA, PRISMA spectrometer and the Cologne plunger setup and/or AGATA-PRISMA-LNL setup. 76Ge; deduced T1/2, B(E2) of the 4+ state. 72Zn; deduced 6+ to 4+, 4+ to 2+, 2+ to 0+ decay curves, T1/2 using the differential RDDS (Recoil Distance Doppler Shift) method with ion identification spectrometers.
doi: 10.1140/epja/i2017-12382-6
2017DU05 Phys.Rev.Lett. 118, 162501 (2017) J.Dudouet, A.Lemasson, G.Duchene, M.Rejmund, E.Clement, C.Michelagnoli, F.Didierjean, A.Korichi, G.Maquart, O.Stezowski, C.Lizarazo, R.M.Perez-Vidal, C.Andreoiu, G.de Angelis, A.Astier, C.Delafosse, I.Deloncle, Z.Dombradi, G.de France, A.Gadea, A.Gottardo, B.Jacquot, P.Jones, T.Konstantinopoulos, I.Kuti, F.Le Blanc, S.M.Lenzi, G.Li, R.Lozeva, B.Million, D.R.Napoli, A.Navin, C.M.Petrache, N.Pietralla, D.Ralet, M.Ramdhane, N.Redon, C.Schmitt, D.Sohler, D.Verney, D.Barrientos, B.Birkenbach, I.Burrows, L.Charles, J.Collado, D.M.Cullen, P.Desesquelles, C.Domingo Pardo, V.Gonzalez, L.Harkness-Brennan, H.Hess, D.S.Judson, M.Karolak, W.Korten, M.Labiche, J.Ljungvall, R.Menegazzo, D.Mengoni, A.Pullia, F.Recchia, P.Reiter, M.D.Salsac, E.Sanchis, Ch.Theisen, J.J.Valiente-Dobon, M.Zielinska 9636Kr60-Low-Z Boundary of the Island of Deformation at N=60 NUCLEAR REACTIONS 9Be(238U, X)96Kr, E=6.2 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced γ-ray energies, J, π, R4/2. Comparison with theoretical calculations.
doi: 10.1103/PhysRevLett.118.162501
2017KO34 Eur.Phys.J. A 53, 175 (2017) D.Kocheva, G.Rainovski, J.Jolie, N.Pietralla, A.Blazhev, A.Astier, R.Altenkirch, S.Ansari, Th.Braunroth, M.L.Cortes, A.Dewald, F.Diel, M.Djongolov, C.Fransen, K.Gladnishki, A.Hennig, V.Karayonchev, J.M.Keatings, E.Kluge, J.Litzinger, C.Muller-Gatermann, P.Petkov, M.Rudigier, M.Scheck, Ph.Scholz, P.Spagnoletti, M.Spieker, C.Stahl, R.Stegmann, M.Stoyanova, P.Thole, N.Warr, V.Werner, W.Witt, D.Wolk, K.O.Zell, P.Van Isacker, V.Yu.Ponomarev A revised B(E2;2+1 → 0+1) value in the semi-magic nucleus 210Po NUCLEAR REACTIONS 208Pb(12C, 10Be), E=62 MeV; measured Eγ, Iγ(θ), γγ-coin, (particle)γ-coin using 11 HPGe, light reaction fragments using solar cells array. 210Po; deduced 2+1 state T1/2 using the line shape of the transition, branching ratios to this state from upper states, B(E1), B(E2), B(E3), B(M1), T1/2 of three states and transitions; calculated low-lying states energy, structure, B(E1), B(E2), B(E3), B(M1) using QPM (Quasiparticle Phonon Model). Compared with data.
doi: 10.1140/epja/i2017-12367-5
2017KO38 Phys.Rev. C 96, 044305 (2017) D.Kocheva, G.Rainovski, J.Jolie, N.Pietralla, A.Blazhev, R.Altenkirch, S.Ansari, A.Astier, M.Bast, M.Beckers, Th.Braunroth, M.Cappellazzo, A.Dewald, F.Diel, M.Djongolov, C.Fransen, K.Gladnishki, A.Goldkuhle, A.Hennig, V.Karayonchev, J.M.Keatings, E.Kluge, Th.Kroll, J.Litzinger, K.Moschner, C.Muller-Gatermann, P.Petkov, M.Scheck, Ph.Scholz, T.Schmidt, P.Spagnoletti, C.Stahl, R.Stegmann, A.Stolz, A.Vogt, N.Warr, V.Werner, D.Wolk, J.C.Zamora, K.O.Zell, V.Yu.Ponomarev, P.Van Isacker Low collectivity of the 2+1 state of 212Po NUCLEAR REACTIONS 208Pb(12C, 8Be)212Po, E=64 MeV; measured Eγ, Iγ, (particle)γ-coin, half-life of the first 2+ state by recoil-distance Doppler-shift (RDDS) method at the FN Tandem facility of the University of Cologne. 212Po; deduced levels, J, π, B(E2). Comparisons with levels and B(E2) of 210Po and 210Pb, and with theoretical calculations using shell model. Systematics of B(E2) values for the first 2+ states in 20Ne, 44Ti, 52Ti, 136Te, 212Po, nuclei with two valence protons and two valence neutrons.
doi: 10.1103/PhysRevC.96.044305
2017LE08 Phys.Rev. C 96, 011301 (2017) M.Lettmann, V.Werner, N.Pietralla, P.Doornenbal, A.Obertelli, T.R.Rodriguez, K.Sieja, G.Authelet, H.Baba, D.Calvet, F.Chateau, S.Chen, A.Corsi, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, V.Lapoux, T.Motobayashi, M.Niikura, N.Paul, J.-Y.Rousse, H.Sakurai, C.Santamaria, D.Steppenbeck, R.Taniuchi, T.Uesaka, T.Ando, T.Arici, A.Blazhev, F.Browne, A.Bruce, R.J.Caroll, L.X.Chung, M.L.Cortes, M.Dewald, B.Ding, F.Flavigny, S.Franchoo, M.Gorska, A.Gottardo, A.Jungclaus, J.Lee, B.D.Linh, J.Liu, Z.Liu, C.Lizarazo, S.Momiyama, K.Moschner, S.Nagamine, N.Nakatsuka, C.Nita, C.R.Nobs, L.Olivier, Z.Patel, Zs.Podolyak, M.Rudigier, T.Saito, C.Shand, P.-A.Soderstrom, I.Stefan, V.Vaquero, K.Wimmer, Z.Xu Triaxiality of neutron-rich 84, 86, 88Ge from low-energy nuclear spectra NUCLEAR REACTIONS 1H(85Ge, np), (87As, 2p), (89As, 2p), E≈270 MeV/nucleon reduced to ≈70 MeV/nucleon through the target, [85Ge, 87As and 89As secondary beams from 9Be(238U, F), E=345 MeV primary reaction at RIBF-RIKEN facility]; measured yields of fission fragments using time-of-flight method and BigRIPS magnetic spectrometer, particle spectra using ZeroDegree spectrometer and Doppler-corrected Eγ, Iγ, γγ-coin using DALI2 array of NaI detectors. 84,86,88Ge; deduced levels, J, π. Systematics of energies of first 2+ and 4+ states in even-even Z=32-40, N=50-60 nuclei. 86,88Ge; calculated potential energy surfaces in (β2, γ) plane using particle number variation after projection (PN-VAP) approach. Discussed triaxiality in even-even Ge nuclei based upon the observation of a tentative 3+ state in 86Ge. Comparison with shell-model, and symmetry-conserving configuration mixing Gogny (SCCM) model.
doi: 10.1103/PhysRevC.96.011301
2017MA28 Phys.Rev. C 95, 054316 (2017) M.Mathy, J.Birkhan, H.Matsubara, P.von Neumann-Cosel, N.Pietralla, V.Yu.Ponomarev, A.Richter, A.Tamii Search for weak M1 transitions in 48Ca with inelastic proton scattering NUCLEAR REACTIONS 48Ca(p, p'), E=295 MeV; measured Ep, Ip, σ(θ) using Grand Raiden spectrometer at RCNP-Osaka. Multipole decomposition analysis (MDA) of experimental data. 48Ca; deduced levels, J, π, B(M1), quenching factors of GT and spin-M1 strength in fp-shell nuclei, negligible role of meson-exchange currents. Comparison with previous experimental (e, e'), and evaluated data.
doi: 10.1103/PhysRevC.95.054316
2017MA67 Phys.Rev.Lett. 119, 182503 (2017) D.Martin, P.von Neumann-Cosel, A.Tamii, N.Aoi, S.Bassauer, C.A.Bertulani, J.Carter, L.Donaldson, H.Fujita, Y.Fujita, T.Hashimoto, K.Hatanaka, T.Ito, A.Krugmann, B.Liu, Y.Maeda, K.Miki, R.Neveling, N.Pietralla, I.Poltoratska, V.Yu.Ponomarev, A.Richter, T.Shima, T.Yamamoto, M.Zweidinger Test of the Brink-Axel Hypothesis for the Pygmy Dipole Resonance NUCLEAR REACTIONS 96Mo(polarized p, p'), E=295 MeV; measured reaction products, Ep, Ip; deduced σ(θ), σ(θ, E), gamma strength functions.
doi: 10.1103/PhysRevLett.119.182503
2017RA09 Phys.Scr. 92, 054004 (2017) D.Ralet, G.Georgiev, A.E.Stuchbery, E.Cement, A.Lemasson, C.Michelagnoli, M.Rejmund, L.Atanasova, D.L.Balabanski, G.Bocchi, R.Carroll, A.Dewald, J.Dudouet, B.Fornal, G.de France, S.Franchoo, C.Fransen, C.Muller-Gatermann, A.Goasduff, A.Gadea, B.Jacquot, P.R.John, D.Kocheva, T.Konstantinopoulos, A.Korichi, A.Kusoglu, S.M.Lenzi, S.Leoni, J.Ljungvall, R.Lozeva, A.Maj, A.Navin, R.Perez, N.Pietralla, C.Shand, O.Stezowski, D.Yordanov Toward lifetime and g factor measurements of short-lived states in the vicinity of 208Pb NUCLEAR REACTIONS 100Mo(208Pb, X)206Pb/207Pb/208Pb, E=6.25 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced γ-ray energies. Preliminary data for the lifetime measurements with Cologne plunger device.
doi: 10.1088/1402-4896/aa6942
2017SC06 Acta Phys.Pol. B48, 547 (2017) M.Scheck, S.Mishev, V.Yu.Ponomarev, O.Agar, T.Beck, A.Blanc, R.Chapman, U.Gayer, L.P.Gaffney, E.T.Gregor, J.Keatings, P.Koseoglou, U.Koster, K.R.Mashtakov, D.O'Donnell, H.Pai, N.Pietralla, D.Savran, J.F.Smith, P.Spagnoletti, G.S.Simpson, M.Thurauf, V.Werner β Decay as a New Probe for the Low-energy E1 Strength RADIOACTIVITY 136I(β-); deduced discrete levels, γ transitions intensity, level population probability, branching ratios, B(E1) using published data. Compared with results from 136Xe(γ, γ'). NUCLEAR REACTIONS 136Xe(γ, γ'), E not given; deduced discrete transitions intensity, level population probability, branching ratios, B(E1) using published data.
doi: 10.5506/APhysPolB.48.547
2017ST09 Phys.Lett. B 770, 77 (2017) R.Stegmann, C.Stahl, G.Rainovski, N.Pietralla, C.Stoyanov, M.P.Carpenter, R.V.F.Janssens, M.Lettmann, T.Moller, O.Moller, V.Werner, S.Zhu Identification of the one-quadrupole phonon 2+1, ms state of 204Hg NUCLEAR REACTIONS 12C, 27Al(204Hg, 204Hg'), E=890 MeV; measured reaction products, Eγ, Iγ. 204Hg; deduced energy levels, J, π, B(E2), level T1/2. DSAM, Coulomb excitation. Comparison with Quasi-particle Phonon Model (QPM) calculations.
doi: 10.1016/j.physletb.2017.04.032
2016BE31 J.Phys.(London) G43, 115101 (2016) N.Benouaret, J.Beller, H.Pai, N.Pietralla, V.Yu.Ponomarev, C.Romig, L.Schnorrenberger, M.Zweidinger, M.Scheck, J.Isaak Dipole response of the odd-proton nucleus 205Tl up to the neutron-separation energy NUCLEAR REACTIONS 203,205Tl(γ, γ'), E<8 MeV; measured reaction products, Eγ, Iγ; deduced energy levels, σ(θ), resonance parameters, B(M1), B(E1). The quasiparticle phonon model calculations.
doi: 10.1088/0954-3899/43/11/115101
2016BI05 Phys.Rev. C 93, 041302 (2016) J.Birkhan, H.Matsubara, P.von Neumann-Cosel, N.Pietralla, V.Yu.Ponomarev, A.Richter, A.Tamii, J.Wambach Electromagnetic M1 transition strengths from inelastic proton scattering: The cases of 48Ca and 208Pb NUCLEAR REACTIONS 48Ca(p, p'), E=295 MeV; analyzed σ(θ) for dominating peak at 10.23 MeV ascribed to isovector spin-flip M1 (IVSM1) resonance; deduced B(M1) using a method based on isospin symmetry. Comparison with B(M1) deduced from (p, p') at 201 MeV, (p, n) at 295 MeV, (e, e') and (γ, n) data. 208Pb(p, p'), (n, n'γ), (polarized γ, γ'); analyzed B(M1) strengths in 6.5-9 MeV excitation region. Quenching phenomenon of the spin-isospin response. Method for extracting systematic information on the IVSM1 resonances in heavy nuclei.
doi: 10.1103/PhysRevC.93.041302
2016DE05 Phys.Rev. C 93, 034311 (2016) V.Derya, N.Tsoneva, T.Aumann, M.Bhike, J.Endres, M.Gooden, A.Hennig, J.Isaak, H.Lenske, B.Loher, N.Pietralla, D.Savran, W.Tornow, V.Werner, A.Zilges Decay of quadrupole-octupole 1- states in 40Ca and 140Ce NUCLEAR REACTIONS 40Ca, 140Ce(polarized γ, γ'), E=3.6, 5.9 MeV; measured Eγ, Iγ, γγ-coin, polarization asymmetry and analyzing powers using high intensity γ-ray Source (HIγS) facility at (TUNL); deduced levels, J, π, B(E1), B(E2). Comparisons with energy density functional (EDF) and quasiparticle-phonon model (QPM) calculations. B(E1) and B(E2) systematics for N=82 isotones of 138Ba, 140Ce, 142Nd, 144Sm.
doi: 10.1103/PhysRevC.93.034311
2016GR15 Phys.Rev. C 94, 044327 (2016) T.Grahn, S.Stolze, D.T.Joss, R.D.Page, B.Saygi, D.O'Donnell, M.Akmali, K.Andgren, L.Bianco, D.M.Cullen, A.Dewald, P.T.Greenlees, K.Heyde, H.Iwasaki, U.Jakobsson, P.Jones, D.S.Judson, R.Julin, S.Juutinen, S.Ketelhut, M.Leino, N.Lumley, P.J.R.Mason, O.Moller, K.Nomura, M.Nyman, A.Petts, P.Peura, N.Pietralla, Th.Pissulla, P.Rahkila, P.J.Sapple, J.Saren, C.Scholey, J.Simpson, J.Sorri, P.D.Stevenson, J.Uusitalo, H.V.Watkins, J.L.Wood Excited states and reduced transition probabilities in 168Os NUCLEAR REACTIONS 92Mo(78Kr, 2p), E=335, 345, 348 MeV; measured Eγ, Iγ, γγ-, (recoil)γ-coin, level half-lives by recoil-distance method using a plunger device, RITU separator, GREAT spectrometer, JUROGAM array at Jyvaskyla accelerator facility. 168Os; deduced high-spin levels, J, π, bands, B(E2), B(E1), transition quadrupole and dipole moments. Comparisons with interacting boson model (IBM-2) calculations based on the SkM* energy-density functional. Systematics of ground bands, and excited positive-parity level energies up to 8+ in 168,170,172,174,176,178,180,182,184Os.
doi: 10.1103/PhysRevC.94.044327
2016KO03 Phys.Rev. C 93, 011303 (2016) D.Kocheva, G.Rainovski, J.Jolie, N.Pietralla, C.Stahl, P.Petkov, A.Blazhev, A.Hennig, A.Astier, Th.Braunroth, M.L.Cortes, A.Dewald, M.Djongolov, C.Fransen, K.Gladnishki, V.Karayonchev, J.Litzinger, C.Muller-Gatermann, M.Scheck, Ph.Scholz, R.Stegmann, P.Thole, V.Werner, W.Witt, D.Wolk, P.Van Isacker Low-lying isovector 2+ valence-shell excitations of 212Po NUCLEAR REACTIONS 208Pb(12C, 2α)212Po, E=62 MeV; measured Eγ, Iγ, (particle)γ-, γγ-coin, enriched target, level half-lives by DSAM and line-shape analysis using an array of 12 HPGe detectors for γ detection, and solar cell array for reaction products at FN Tandem facility of the University of Cologne. 212Po; deduced levels, J, π, B(M1), B(E2) of second and third 2+ states as candidates for one-phonon mixed-symmetry states (MSS). Comparison with simple single-j shell model calculation. 211Po; observed γ rays. 209,210Po, 208Pb, 209Bi; reaction products measured in coincidence with γ rays.
doi: 10.1103/PhysRevC.93.011303
2016KR07 Phys.Rev.Lett. 117, 172503 (2016) C.Kremer, S.Aslanidou, S.Bassauer, M.Hilcker, A.Krugmann, P.von Neumann-Cosel, T.Otsuka, N.Pietralla, V.Yu.Ponomarev, N.Shimizu, M.Singer, G.Steinhilber, T.Togashi, Y.Tsunoda, V.Werner, M.Zweidinger First Measurement of Collectivity of Coexisting Shapes Based on Type II Shell Evolution: The Case of 96Zr NUCLEAR REACTIONS 96Zr(E, E'), E=43 MeV; measured reaction products, Eγ, Iγ; deduced energy levels, J, π, B(E2). Comparison with the shell-model calculations and a two-state model with and without mixing.
doi: 10.1103/PhysRevLett.117.172503
2016LO04 Phys.Lett. B 756, 72 (2016) B.Loher, D.Savran, T.Aumann, J.Beller, M.Bhike, N.Cooper, V.Derya, M.Duchene, J.Endres, A.Hennig, P.Humby, J.Isaak, J.H.Kelley, M.Knorzer, N.Pietralla, V.Yu.Ponomarev, C.Romig, M.Scheck, H.Scheit, J.Silva, A.P.Tonchev, W.Tornow, F.Wamers, H.Weller, V.Werner, A.Zilges The decay pattern of the Pygmy Dipole Resonance of 140Ce NUCLEAR REACTIONS 140Ce(γ, γ'), (γ, γ), E=6.5 MeV; measured reaction products, Eγ, Iγ; deduced elastic scattering σ, average branching ratio to excited states for 140Ce, Pygmy Dipole Resonance (PDR) couple to the ground state as well as to low-lying excited states, PDR mixing. Comparison with nuclear model calculations.
doi: 10.1016/j.physletb.2016.02.042
2016MO34 Phys.Rev. C 94, 054323 (2016) K.Moschner, A.Blazhev, J.Jolie, N.Warr, P.Boutachkov, P.Bednarczyk, K.Sieja, A.Algora, F.Ameil, M.A.Bentley, S.Brambilla, N.Braun, F.Camera, J.Cederkall, A.Corsi, M.Danchev, D.DiJulio, C.Fahlander, J.Gerl, A.Giaz, P.Golubev, M.Gorska, J.Grebosz, T.Habermann, M.Hackstein, R.Hoischen, I.Kojouharov, N.Kurz, N.Marginean, E.Merchan, T.Moller, F.Naqvi, B.S.Nara Singh, C.Nociforo, N.Pietralla, S.Pietri, Zs.Podolyak, A.Prochazka, M.Reese, P.Reiter, M.Rudigier, D.Rudolph, T.Sava, H.Schaffner, L.Scruton, J.Taprogge, T.Thomas, H.Weick, A.Wendt, O.Wieland, H.-J.Wollersheim Relativistic Coulomb excitation of 88Kr NUCLEAR REACTIONS 197Au(88Kr, 88Kr'), E=128 MeV/nucleon, [secondary 88Kr beam from 9Be(238U, F), E=650 MeV/nucleon, followed by separation of fragments using FRS separator at GSI]; measured scattered particles, Eγ, (particle)γ-coin using PreSPEC Ge-detector array of EUROBALL Cluster for γ detection and Lund-York-Cologne Calorimeter (LYCCA) for ion detection. 88Kr; deduced levels, B(E2) and B(M1) for second and third 2+ states, mixed-symmetric nature of the third 2+ state. Comparison with IBM-2 model calculations. Systematics of energies, B(E2) and B(M1) for the first and third 2+ states for 88Kr, 90Sr, 92Zr, 94Mo, 96Ru, 98Pd.
doi: 10.1103/PhysRevC.94.054323
2016PA04 Phys.Rev. C 93, 014318 (2016) H.Pai, T.Beck, J.Beller, R.Beyer, M.Bhike, V.Derya, U.Gayer, J.Isaak, Krishichayan, J.Kvasil, B.Loher, V.O.Nesterenko, N.Pietralla, G.Martinez-Pinedo, L.Mertes, V.Yu.Ponomarev, P.-G.Reinhard, A.Repko, P.C.Ries, C.Romig, D.Savran, R.Schwengner, W.Tornow, V.Werner, J.Wilhelmy, A.Zilges, M.Zweidinger Magnetic dipole excitations of 50Cr NUCLEAR REACTIONS 50Cr(γ, γ'), (polarized γ, γ'), E<9.7 MeV bremsstrahlung; measured Eγ, Iγ, γ(θ), γ-polarization asymmetry, integrated σ, γ-branching ratios. Experiments performed at Darmstadt S-DALINAC and TUNL High Intensity γ-ray Source (HIγS) facilities. 50Cr; deduced levels, J, π, B(M1), reduced widths, configurations, M1 spin-flip transition. Discussed isovector rotation-like oscillations of 1+ states versus scissors-type mode. Comparison with Skyrme quasiparticle random-phase-approximation (QRPA) and the large-scale shell model (LSSM) calculations.
doi: 10.1103/PhysRevC.93.014318
2016PO09 Phys.Rev.Lett. 117, 222302 (2016) Zs.Podolyak, C.M.Shand, N.Lalovic, J.Gerl, D.Rudolph, T.Alexander, P.Boutachkov, M.L.Cortes, M.Gorska, I.Kojouharov, N.Kurz, C.Louchart, E.Merchan, C.Michelagnoli, R.M.Perez-Vidal, S.Pietri, D.Ralet, M.Reese, H.Schaffner, Ch.Stahl, H.Weick, F.Ameil, G.de Angelis, T.Arici, R.Carroll, Zs.Dombradi, A.Gadea, P.Golubev, M.Lettmann, C.Lizarazo, D.Mahboub, H.Pai, Z.Patel, N.Pietralla, P.H.Regan, L.G.Sarmiento, O.Wieland, E.Wilson, B.Birkenbach, B.Bruyneel, I.Burrows, L.Charles, E.Clement, F.C.L.Crespi, D.M.Cullen, P.Desesquelles, J.Eberth, V.Gonzalez, T.Habermann, L.Harkness-Brennan, H.Hess, D.S.Judson, A.Jungclaus, W.Korten, M.Labiche, A.Maj, D.Mengoni, D.R.Napoli, A.Pullia, B.Quintana, G.Rainovski, P.Reiter, M.D.Salsac, E.Sanchis, J.J.Valiente Dobon Role of the δ Resonance in the Population of a Four-Nucleon State in the 56Fe → 54Fe Reaction at Relativistic Energies NUCLEAR REACTIONS Be(56Fe, X)54Fe, E=500 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced the parallel momentum distribution of fragments, isomeric ratio of the 10+ isomeric state, a consequence of the quark structure of the nucleons.
doi: 10.1103/PhysRevLett.117.222302
2016SC06 Phys.Rev.Lett. 116, 132501 (2016) M.Scheck, S.Mishev, V.Yu.Ponomarev, R.Chapman, L.P.Gaffney, E.T.Gregor, N.Pietralla, P.Spagnoletti, D.Savran, G.S.Simpson Investigating the Pygmy Dipole Resonance Using β Decay NUCLEAR REACTIONS 136Xe(γ, γ'), E not given; calculated energy levels, J, π, B(E1). RADIOACTIVITY 136I(β-); calculated energy levels, J, π, B(E1); deduced β-decay populates a fraction of 1- levels associated with the pygmy dipole resonance.
doi: 10.1103/PhysRevLett.116.132501
2016SE18 Phys.Atomic Nuclei 79, 469 (2016) A.P.Severyukhin, N.N.Arsenyev, N.Pietralla, V.Werner Structure of 2+1, 2 states in 132, 134, 136Te NUCLEAR STRUCTURE 132,134,136Te; calculated 2+1 state energy, B(E2), B(M1), g factors using QRPA and taking into account phono-phonon coupling. Compared with data.
doi: 10.1134/S1063778816040190
2016SP01 Phys.Lett. B 752, 102 (2016) M.Spieker, N.Tsoneva, V.Derya, J.Endres, D.Savran, M.N.Harakeh, S.Harissopulos, R.-D.Herzberg, A.Lagoyannis, H.Lenske, N.Pietralla, L.Popescu, M.Scheck, F.Schluter, K.Sonnabend, V.I.Stoica, H.J.Wortche, A.Zilges The pygmy quadrupole resonance and neutron-skin modes in 124Sn NUCLEAR REACTIONS 124Sn(α, α'), E=34 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced σ(θ), B(E2), pygmy quadrupole resonance. Comparison with quasiparticle random-phase approximation calculations.
doi: 10.1016/j.physletb.2015.11.004
2016TH01 Nucl.Phys. A947, 203 (2016) T.Thomas, V.Werner, J.Jolie, K.Nomura, T.Ahn, N.Cooper, H.Duckwitz, A.Fitzler, C.Fransen, A.Gade, M.Hinton, G.Ilie, K.Jessen, A.Linnemann, P.Petkov, N.Pietralla, D.Radeck Nuclear structure of 96, 98Mo: Shape coexistence and mixed-symmetry states NUCLEAR REACTIONS 96Zr(3He, 3n), E=18 MeV;96Zr(α, 2n), E=16 MeV;measured Eγ, Iγ(θ), γγ-coin using OSIRIS and YRAST Ball spectrometer; deduced γ angular correlations; deduced levels, J, π, branching and E2/M1 mixing ratios, B(M1), B(E2), lifetimes of discrete γ transitions using Doppler Shift Attenuation Method; calculated β, γ deformations using Skyrme energy density functional, IBM-2 configuration mixing; deduced parameters, one- and two-phonon mixed-symmetry states, shape coexistence.
doi: 10.1016/j.nuclphysa.2015.12.010
2016WI08 Phys.Rev. C 94, 044302 (2016) J.Wiederhold, R.Kern, C.Lizarazo, N.Pietralla, V.Werner, R.V.Jolos, D.Bucurescu, N.Florea, D.Ghita, T.Glodariu, R.Lica, N.Marginean, R.Marginean, C.Mihai, R.Mihai, I.O.Mitu, A.Negret, C.Nita, A.Olacel, S.Pascu, L.Stroe, S.Toma, A.Turturica Fast-timing lifetime measurement of 152Gd NUCLEAR REACTIONS 149Sm(α, n), E=17.5 MeV; measured Eγ, γγ-coin, level half-lives by γγ(t) fast timing technique (FEST) at NIPNE-Bucharest Tandem accelerator facility. 152Gd; deduced levels, B(E2), E0 transition strength for excited 0+ state to the ground state, indication of a quantum phase transition (QPT). Comparison with previous experimental results. Systematics of B(E2) products and E0 strength for 146,148,150,152,154,156,158Gd, 148,150,152,154Sm. RADIOACTIVITY 152Eu(β-), (EC); measured Eγ, level half-lives by γγ(t) fast-timing technique. 152Gd, 152Sm; deduced levels, B(E2).
doi: 10.1103/PhysRevC.94.044302
2015BE02 Phys.Lett. B 741, 128 (2015) J.Beller, C.Stumpf, M.Scheck, N.Pietralla, D.Deleanu, D.M.Filipescu, T.Glodariu, W.Haxton, A.Idini, J.H.Kelley, E.Kwan, G.Martinez-Pinedo, R.Raut, C.Romig, R.Roth, G.Rusev, D.Savran, A.P.Tonchev, W.Tornow, J.Wagner, H.R.Weller, N.-V.Zamfir, M.Zweidinger Separation of the 1+/1- parity doublet in 20Ne NUCLEAR REACTIONS 20Ne, 28Si(polarized γ, γ'), E=11.26 MeV; measured reaction products, Eγ, Iγ; deduced the energy difference of the parity doublet, the ratio of their integrated σ. Comparison with shell model calculations.
doi: 10.1016/j.physletb.2014.12.018
2015FI10 Eur.Phys.J. A 51, 185 (2015) D.Filipescu, A.Anzalone, D.L.Balabanski, S.S.Belyshev, F.Camera, M.La Cognata, P.Constantin, L.Csige, P.V.Cuong, M.Cwiok, V.Derya, W.Dominik, M.Gai, S.Gales, I.Gheorghe, B.S.Ishkhanov, A.Krasznahorkay, A.A.Kuznetsov, C.Mazzocchi, V.N.Orlin, N.Pietralla, M.Sin, C.Spitaleri, K.A.Stopani, O.Tesileanu, C.A.Ur, I.Ursu, H.Utsunomiya, V.V.Varlamov, H.R.Weller, N.V.Zamfir, A.Zilges Perspectives for photonuclear research at the Extreme Light Infrastructure - Nuclear Physics (ELI-NP) facility
doi: 10.1140/epja/i2015-15185-9
2015HE32 Phys.Rev. C 92, 064317 (2015) A.Hennig, T.Ahn, V.Anagnostatou, A.Blazhev, N.Cooper, V.Derya, M.Elvers, J.Endres, P.Goddard, A.Heinz, R.O.Hughes, G.Ilie, M.N.Mineva, P.Petkov, S.G.Pickstone, N.Pietralla, D.Radeck, T.J.Ross, D.Savran, M.Spieker, V.Werner, A.Zilges Collective excitations of 96Ru by means of (p, p'γ) experiments NUCLEAR REACTIONS 96Ru(p, p'), E=8.4, 7 MeV; measured Ep, Ip, proton angular distributions, Eγ, Iγ, pγ- and γγ-coin, γγ(θ) using YRAST ball spectrometer at WNSL-Yale accelerator facility, level half-lives by DSAM using HORUS γ-ray spectrometer at IKP-Cologne accelerator facility. 96Ru; deduced levels, J, π, multipolarity, mixing ratios, configuration, B(E2), B(M1), B(E1), one-phonon mixed-symmetry excitations of octupole and hexadecapole character, two-phonon mixed-symmetry quintuplet. Comparison with sdg-IBM-2 and shell-model calculations. NUCLEAR STRUCTURE 96Ru; calculated levels, J, π, B(M1), B(E2) using sdg-IBM-2 and shell-model. Comparison with experimental data.
doi: 10.1103/PhysRevC.92.064317
2015RO09 Phys.Lett. B 744, 369 (2015) C.Romig, D.Savran, J.Beller, J.Birkhan, A.Endres, M.Fritzsche, J.Glorius, J.Isaak, N.Pietralla, M.Scheck, L.Schnorrenberger, K.Sonnabend, M.Zweidinger Direct determination of ground-state transition widths of low-lying dipole states in 140Ce with the self-absorption technique NUCLEAR REACTIONS 140Ce(γ, γ'), E<8 MeV; measured reaction products, Eγ, Iγ; deduced ground state transition widths, branching ratios. Comparison with available data.
doi: 10.1016/j.physletb.2015.04.013
2015SA43 Phys.Rev.Lett. 115, 192501 (2015) C.Santamaria, C.Louchart, A.Obertelli, V.Werner, P.Doornenbal, F.Nowacki, G.Authelet, H.Baba, D.Calvet, F.Chateau, A.Corsi, A.Delbart, J.-M.Gheller, A.Gillibert, T.Isobe, V.Lapoux, M.Matsushita, S.Momiyama, T.Motobayashi, M.Niikura, H.Otsu, C.Peron, A.Peyaud, E.C.Pollacco, J.-Y.Rousse, H.Sakurai, M.Sasano, Y.Shiga, S.Takeuchi, R.Taniuchi, T.Uesaka, H.Wang, K.Yoneda, F.Browne, L.X.Chung, Zs.Dombradi, S.Franchoo, F.Giacoppo, A.Gottardo, K.Hadynska-Klek, Z.Korkulu, S.Koyama, Y.Kubota, J.Lee, M.Lettmann, R.Lozeva, K.Matsui, T.Miyazaki, S.Nishimura, L.Olivier, S.Ota, Z.Patel, N.Pietralla, E.Sahin, C.Shand, P.-A.Soderstrom, I.Stefan, D.Steppenbeck, T.Sumikama, D.Suzuki, Zs.Vajta, J.Wu, Z.Xu Extension of the N = 40 Island of Inversion towards N = 50: Spectroscopy of 66Cr, 70, 72Fe NUCLEAR REACTIONS 1H(67Mn, 2p), E= ∼ 200 MeV/nucleon; 1H(71Co, 2p), (73Co, 2p), E ∼ 260 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced level energies, J, π. Comparison with shell model calculations.
doi: 10.1103/PhysRevLett.115.192501
2015SI01 Phys.Rev. C 91, 014311 (2015) B.Siebeck, M.Seidlitz, A.Blazhev, P.Reiter, R.Altenkirch, C.Bauer, P.A.Butler, H.De Witte, J.Elseviers, L.P.Gaffney, H.Hess, M.Huyse, T.Kroll, R.Lutter, J.Pakarinen, N.Pietralla, F.Radeck, M.Scheck, D.Schneiders, C.Sotty, P.Van Duppen, M.Vermeulen, D.Voulot, N.Warr, F.Wenander Testing refined shell-model interactions in the sd shell: Coulomb excitation of 26Na NUCLEAR REACTIONS 104Pd(26Na, 26Na'), E=2.82 MeV/nucleon, [secondary 26Na beam from U(p, X), E=1 GeV primary reaction]; measured Eγ, Iγ, (scattered particle)γ-coin using REX-ISOLDE facility and MINIBALL array at CERN. Coulomb excitation. 26Na; deduced levels, J, π, B(E2), B(M1), configuration. 104Pd; B(E2) for first 2+ used for normalization of data for 26Na. Analysis by coupled channels Coulomb excitation code GOSIA2. Comparison with shell model calculations using USD, USDA and USDB interactions.
doi: 10.1103/PhysRevC.91.014311
2015SO23 Phys.Rev. C 92, 051305 (2015) P.-A.Soderstrom, S.Nishimura, Z.Y.Xu, K.Sieja, V.Werner, P.Doornenbal, G.Lorusso, F.Browne, G.Gey, H.S.Jung, T.Sumikama, J.Taprogge, Zs.Vajta, H.Watanabe, J.Wu, H.Baba, Zs.Dombradi, S.Franchoo, T.Isobe, P.R.John, Y.-K.Kim, I.Kojouharov, N.Kurz, Y.K.Kwon, Z.Li, I.Matea, K.Matsui, G.Martinez-Pinedo, D.Mengoni, P.Morfouace, D.R.Napoli, M.Niikura, H.Nishibata, A.Odahara, K.Ogawa, N.Pietralla, E.Sahin, H.Sakurai, H.Schaffner, D.Sohler, I.G.Stefan, D.Suzuki, R.Taniuchi, A.Yagi, K.Yoshinaga Two-hole structure outside 78Ni: Existence of a μs isomer of 76Co and β decay into 76Ni NUCLEAR REACTIONS 9Be(238U, F), E=345 MeV/nucleon; measured Eγ, Iγ, γγ-coin, βγ(t), half-lives of isomers using BigRIPS separator, WAS3ABi silicon detector stack and EURICA array at RIBF-RIKEN. 76Co, 76Ni; deduced levels, isomers, J, π, configuration, B(E1), B(E2). Comparison with shell-model calculation using LNPS interaction. RADIOACTIVITY 76Co(β-)[16-ms and 21.7-ms activities from 9Be(238U, F), E=345 MeV/nucleon]; measured Eγ, Iγ, γγ-coin, βγ(t), half-lives of isomers using BigRIPS separator, WAS3ABi silicon detector stack and EURICA array at RIBF-RIKEN. 76Ni; deduced levels, isomers, J, π, configuration. Comparison with shell-model calculation using LNPS interaction.
doi: 10.1103/PhysRevC.92.051305
2015ST08 Phys.Rev. C 91, 054326 (2015) R.Stegmann, C.Bauer, G.Rainovski, N.Pietralla, C.Stahl, S.Bonig, S.Ilieva, A.Blazhev, A.Damyanova, M.Danchev, K.Gladnishki, J.Jolie, R.Lutter, J.Pakarinen, D.Radeck, E.Rapisarda, P.Reiter, M.Scheck, B.Siebeck, T.Stora, P.Thole, T.Thomas, M.Thurauf, M.J.Vermeulen, D.Voulot, N.Warr, F.Wenander, V.Werner, H.De Witte Evolution of quadrupole collectivity in N=80 isotones toward the Z=64 subshell gap: The B(E2; 2+1 → 0+1) value of 142Sm NUCLEAR REACTIONS 48Ti, 94Mo(142Sm, 142Sm'), E=405 MeV, [secondary 142Sm beam from Ta(p, X), E=1.4 GeV from PS booster at CERN and using RILIS and GPS setup at ISOLDE-CERN]; measured Eγ, Iγ, (particle)γ-coin, γ-particle yields as function of angle using MINIBALL HPGe-detector array at REX-ISOLDE-CERN facility. Coulomb excitation technique. 142Sm; deduced matrix elements and B(E2) for the first 2+ state in 142Sm. Systematics of B(E2) values for first 2+ state in 130Sn, 132Te, 134Xe, 136Ba, 138Ce, 140Nd, 142Sm. Comparison with shell-model calculations. RADIOACTIVITY 142Pm, 142,142mEu, 142Sm(EC), (β+); measured Iγ; deduced 142mEu/142Eu isomeric ratio, and M(142Eu)/M(142Sm).
doi: 10.1103/PhysRevC.91.054326
2015ST16 Phys.Rev. C 92, 044324 (2015) C.Stahl, J.Leske, C.Bauer, D.Bazzacco, E.Farnea, A.Gottardo, P.R.John, C.Michelagnoli, N.Pietralla, M.Reese, E.Sahin, B.Birkenbach, A.Bracco, F.C.L.Crespi, G.de Angelis, P.Desesquelles, J.Eberth, A.Gadea, A.Gorgen, J.Grebosz, H.Hess, J.Jolie, A.Jungclaus, W.Korten, S.M.Lenzi, S.Lunardi, R.Menegazzo, D.Mengoni, V.Modamio, D.R.Napoli, A.Pullia, B.Quintana, F.Recchia, P.Reiter, D.Rosso, M.D.Salsac, P.-A.Soderstrom, O.Stezowski, Ch.Theisen, C.A.Ur, J.J.Valiente-Dobon Population of the 2+ms mixed-symmetry state of 140Ba with the α-transfer reaction NUCLEAR REACTIONS 12C(136Xe, 140Ba)8Be, E=500, 546 MeV; measured Eγ, Iγ, (particle)γ-, γγ-coin using AGATA demonstrator array at LNL, Legnaro. 140Ba; deduced levels, J, π, energy and cross section of 2+ mixed-symmetry state. 139Ba; observed γ rays populated in 12C(136Xe, 139Ba*)4He+αn.
doi: 10.1103/PhysRevC.92.044324
2015WA29 Nature(London) 526, 406 (2015) C.Walz, H.Scheit, N.Pietralla, T.Aumann, R.Lefol, V.Yu.Ponomarev Observation of the competitive double-gamma nuclear decay RADIOACTIVITY 137Cs(β-), 137Ba(IT); measured decay products, Eγ, Iγ; deduced γγ-ray branching ratio, multipolarities of the γ-radiation. Comparison with available data.
doi: 10.1038/nature15543
2014BE09 Acta Phys.Pol. B45, 193 (2014) N.Benouaret, J.Beller, J.Isaak, J.H.Kelley, H.Pai, N.Pietralla, V.Yu.Ponomarev, R.Raut, C.Romig, G.Rusev, D.Savran, M.Scheck, L.Schnorrenberger, K.Sonnabend, A.P.Tonchev, W.Tornow, H.R.Weller, M.Zweidinger Photoexcitation of the Stable Tl Isotopes Below the Neutron Separation Energy NUCLEAR REACTIONS 203,205Tl(γ, γ'), E<7.5 MeV; measured reaction products, Eγ, Iγ; deduced dipole strength distribution. Comparison with available data.
doi: 10.5506/APhysPolB.45.193
2014DE04 Phys.Lett. B 730, 288 (2014) V.Derya, D.Savran, J.Endres, M.N.Harakeh, H.Hergert, J.H.Kelley, P.Papakonstantinou, N.Pietralla, V.Yu.Ponomarev, R.Roth, G.Rusev, A.P.Tonchev, W.Tornow, H.J.Wortche, A.Zilges Isospin properties of electric dipole excitations in 48Ca NUCLEAR REACTIONS 48Ca(polarized γ, γ'), E=6.6-9.51 MeV; 40,48Ca, 16O(α, α'γ), E=136 MeV; measured reaction products, Eγ, Iγ; deduced B(E1), J, π. Comparison with RPA calculations, available data.
doi: 10.1016/j.physletb.2014.01.050
2014FU02 Phys.Rev.Lett. 112, 112502 (2014) Y.Fujita, H.Fujita, T.Adachi, C.L.Bai, A.Algora, G.P.A.Berg, P.von Brentano, G.Colo, M.Csatlos, J.M.Deaven, E.Estevez Aguado, C.Fransen, D.De Frenne, K.Fujita, E.Ganioglu, C.J.Guess, J.Gulyas, K.Hatanaka, K.Hirota, M.Honma, D.Ishikawa, E.Jacobs, A.Krasznahorkay, H.Matsubara, K.Matsuyanagi, R.Meharchand, F.Molina, K.Muto, K.Nakanishi, A.Negret, H.Okamura, H.J.Ong, T.Otsuka, N.Pietralla, G.Perdikakis, L.Popescu, B.Rubio, H.Sagawa, P.Sarriguren, C.Scholl, Y.Shimbara, Y.Shimizu, G.Susoy, T.Suzuki, Y.Tameshige, A.Tamii, J.H.Thies, M.Uchida, T.Wakasa, M.Yosoi, R.G.T.Zegers, K.O.Zell, J.Zenihiro Observation of Low- and High-Energy Gamow-Teller Phonon Excitations in Nuclei NUCLEAR REACTIONS 42Ca, 46Ti, 50Cr, 54Fe(3He, t), E=140 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced cumulative-sum strengths of the experimental B(GT) values in the final nuclei, two kinds of GT phonon states. GXPF1J, quasi particle random phase approximation (QRPA) framework based on a self-consistent Hartree-Fock mean field with Skyrme interaction calculations, comparison with available data.
doi: 10.1103/PhysRevLett.112.112502
2014HE28 Phys.Rev. C 90, 051302 (2014) A.Hennig, M.Spieker, V.Werner, T.Ahn, V.Anagnostatou, N.Cooper, V.Derya, M.Elvers, J.Endres, P.Goddard, A.Heinz, R.O.Hughes, G.Ilie, M.N.Mineva, P.Petkov, S.G.Pickstone, N.Pietralla, D.Radeck, T.J.Ross, D.Savran, A.Zilges Mixed-symmetry octupole and hexadecapole excitations in the N=52 isotones NUCLEAR REACTIONS 96Ru(p, p'), E=7.0, 8.4 MeV; measured Ep, Ip, Eγ, Iγ, pγ-coin, γγ(θ), level half-life by centroid-shift method using YRAST Ball spectrometer and Si detectors at Yale ESTU Tandem accelerator facility, and HORUS γ-detector array and particle-detector array SONIC at Cologne FN Tandem accelerator facility. 96Ru; deduced levels, J, π, branching ratios, multipole mixing ratios, B(M1), B(E2), mixed-symmetry states (MSS) of octupole and hexadecapole character. Evidence for one-phonon mixed-symmetry character of the second 3(-) and 4+ states. Comparison with sdg-IBM-2 model calculations.
doi: 10.1103/PhysRevC.90.051302
2014IL02 Phys.Rev. C 89, 054316 (2014) A.Illana, A.Jungclaus, R.Orlandi, A.Perea, C.Bauer, J.A.Briz, J.L.Egido, R.Gernhauser, J.Leske, D.Mucher, J.Pakarinen, N.Pietralla, M.Rajabali, T.R.Rodriguez, D.Seiler, C.Stahl, D.Voulot, F.Wenander, A.Blazhev, H.De Witte, P.Reiter, M.Seidlitz, B.Siebeck, M.J.Vermeulen, N.Warr Low-velocity transient-field technique with radioactive ion beams: g factor of the first excited 2+ state in 72Zn NUCLEAR MOMENTS 72Zn; measured Eγ, Iγ, (particle)γ-coin, γγ(θ, H), precession angles, g factor using the transient-field (TF) technique and MINIBALL cluster Ge detectors at REX-ISOLDE-CERN facility. 72Zn beam of 2.94 MeV/nucleon was obtained from bombardment of UCx target with 1.4-GeV protons using RILIS ion source, REXTRAP, and EBIS ion source. Comparison with shell-model and triaxial beyond-mean-field calculations, and with previous experimental results. Systematics of g factors of first 2+ states in even-even N=32-66 Zn, Ge, Se, Kr and Sr isotopes.
doi: 10.1103/PhysRevC.89.054316
2014KR06 Phys.Rev. C 89, 041302 (2014); Erratum Phys.Rev. C 92, 039902 (2015) C.Kremer, J.Beller, A.Leviatan, N.Pietralla, G.Rainovski, R.Trippel, P.Van Isacker Linking partial and quasi dynamical symmetries in rotational nuclei NUCLEAR STRUCTURE 156,158,160,162Gd, 160,162,164Dy, 164,166Er; calculated ground-state fluctuations for the extended consistent-Q formalism (ECQF) Hamiltonian in even-even rare earth nuclei; deduced empirical formalism for linkage between O(6) partial dynamical symmetry (PDS) and SU(3) quasi-dynamical symmetry (QDS) in rotational nuclei; identified nuclei satisfying both symmetries. 160Gd; calculated levels, J, π, bands with the IBM approach using the ECQF Hamiltonian, and compared with experimental spectrum. Quantum number fluctuations and the intrinsic state formalism are used within the framework of interacting boson model.
doi: 10.1103/PhysRevC.89.041302
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