NSR Query Results
Output year order : Descending NSR database version of April 11, 2024. Search: Author = A.Zilges Found 200 matches. Showing 1 to 100. [Next]2023DE27 Eur.Phys.J. A 59, 198 (2023) J.Deary, M.Scheck, R.Schwengner, D.O'Donnell, D.Bemmerer, R.Beyer, Th.Hensel, A.R.Junghans, T.Kogler, S.E.Muller, K.Romer, K.Schmidt, S.Turkat, S.Urlass, A.Wagner, M.Bowry, P.Adsley, O.Agar, R.Chapman, F.C.L.Crespi, D.T.Doherty, U.Friman-Gayer, R.-D.Herzberg, J.Isaak, R.V.F.Janssens, T.Kroll, B.Loher, B.S.Nara Singh, P.von Neumann-Cosel, L.Pellegri, E.E.Peters, G.Rainovski, D.Savran, J.F.Smith, M.Spieker, P.G.Thirolf, S.Triambak, W.Tornow, M.Venhart, M.Wiedeking, O.Wieland, S.W.Yates, A.Zilges Photo-response of the N = Z nucleus 24Mg NUCLEAR REACTIONS 24Mg(γ, γ'), E<13 MeV; measured reaction products, Eγ, Iγ; deduced energy-integrated scattering σ, B(M1), B(E1). Comparison with available data. The ELBE accelerator of the Helmholtz-Zentrum Dresden-Rossendorf.
doi: 10.1140/epja/s10050-023-01111-7
2023ER01 Eur.Phys.J. A 59, 69 (2023) P.Erbacher, T.Heftrich, A.Endres, J.Glorius, L.Netterdon, D.Just, K.Gobel, M.Krticka, R.Reifarth, K.Sonnabend, B.Thomas, M.Weigand, A.Zilges Measurement of total and partial cross sections of the 90Zr(p, γ)91Nb reaction with in-beam γ-ray spectroscopy NUCLEAR REACTIONS 90Zr(p, γ), E=2.71-5.1 MeV; measured reaction products, Eγ, Iγ; deduced σ. Comparison with available data. HORUS (High efficiency Observatory for γ-Ray Unique Spectroscopy) detector array at the University of Cologne, Germany.
doi: 10.1140/epja/s10050-023-00984-y
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
2023MU07 Phys.Rev. C 107, 035804 (2023) M.Muller, F.Heim, Y.Wang, S.Wilden, A.Zilges Determination of 170, 172Yb(α, n)173, 175Hf reaction cross sections in a stacked-target experiment NUCLEAR REACTIONS 170Yb(α, n), E=14.5 MeV; 172Yb(α, n), E=17 MeV; measured Eγ, Iγ; deduced σ(E). Activation technique. Comparison with TALYS-1.95 calculations with various α optical model potentials (OMP) and other experimental data. Investigated the evolution of the α-OMP with the neutron-to-proton ratio. Cologne Clover Counting setup consisting of two clover-type high-purity germanium detectors in a face-to-face geometry. Irradiation of stacked targets at10 MV FN tandem accelerator (University of Cologne).
doi: 10.1103/PhysRevC.107.035804
2023SP03 Phys.Rev. C 108, 014311 (2023) M.Spieker, L.T.Baby, A.L.Conley, B.Kelly, M.Muscher, R.Renom, T.Schuttler, A.Zilges Experimental study of excited states of 62Ni via one-neutron (d, p) transfer up to the neutron-separation threshold and characteristics of the pygmy dipole resonance states NUCLEAR REACTIONS 61Ni(d, p), E=16 MeV; measured Ep, Ip, σ(θ) using Super-Enge Split-Pole Spectrograph (SE-SPS) at the Superconducting Linear Accelerator and Super-FN Tandem van-de-Graaff accelerator facilities of Florida State University. 62Ni; deduced levels, L-transfers J, π, configurations, spectroscopic factors, total cross sections. Adiabatic distorted wave approximation (ADWA) analysis using the coupled-channels program CHUCK3 for analysis of angular distributions. Comparison with previous experimental results in the ENSDF database. 62Ni(γ, γ'), E not given; measured Eγ, Iγ, γγ(θ); deduced partial results of the experiment for pygmy dipole resonances (PDR) shown in Fig. 8d of the paper, while detailed results to be published elsewhere.
doi: 10.1103/PhysRevC.108.014311
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
2022PR02 Phys.Rev. C 105, 034319 (2022) S.Prill, A.Bohn, V.Everwyn, G.Hafner, F.Heim, M.Spieker, M.Weinert, J.Wilhelmy, A.Zilges Lifetime analysis of 128, 130Te via the Doppler-shift attenuation method NUCLEAR REACTIONS 128Te(p, p'γ), E=8.8 MeV; 130Te(p, p'γ), E=10 MeV; measured Ep, Ip, Eγ, Iγ, pγ-coin. 128,130Te; deduced levels, J, π, T1/2 of excited states, B(E2), B(M1). p-γ-coincidence DSA technique for half-life determination. Comparison to shell-model calculations performed with NuShellX in the jj55pn model space. Combined SONIC (Si-detectors) and HORUS (HPGe-detectors) arrays.
doi: 10.1103/PhysRevC.105.034319
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
2021FA09 Eur.Phys.J. A 57, 191 (2021) M.Farber, M.Weinert, M.Muscher, M.Spieker, J.Wilhelmy, A.Zilges Low-energy excitations and γ-decay branchings in 124Sn via (p, p'γ) at Ep = 15 MeV NUCLEAR REACTIONS 124Sn(p, p'), E=15 MeV; measured reaction products, Ep, Ip, Eγ, Iγ, p-γ-coin.; deduced σ(θ), ratio of γ-ray yields, γ-ray decay branching, level energies, J, π, isospin splitting of the Pygmy Dipole Resonance (PDR). The combined spectroscopy setup SONIC@HORUS at the Tandem accelerator of the University of Cologne.
doi: 10.1140/epja/s10050-021-00422-x
2021HE07 Phys.Rev. C 103, 025805 (2021) F.Heim, J.Mayer, M.Muller, P.Scholz, A.Zilges Deducing primary γ-ray intensities and the dipole strength function in 94Mo via radiative proton capture NUCLEAR REACTIONS 93Nb(p, γ)94Mo, E=3.0, 3.5 MeV; 94Mo(p, p')94Mo, E=13.5 MeV; measured Eγ, Iγ, pγ- and γγ-coin using HORUS γ-ray spectrometer for γ detection and SONIC array for scattered protons at the FN-Tandem accelerator of University of Cologne. 94Mo; deduced levels, J, π, γ-branching ratios, primary γ rays from two-step cascade (TSC) spectra, partial cross-sections at E(p)=3.0 and 3.5 MeV, E1 and M1 strength functions, absolute γ-strength function (γSF). Systematics of γ strength functions in 92Mo, 94Mo and 96Mo. Comparison of γ strength functions with experimental results using the Oslo method and photoinduced experiments as well as with recent theoretical quasiparticle random-phase approximation (QRPA) calculations. Relevance to nucleosynthesis of heavy nuclei in the slow and rapid neutron capture processes.
doi: 10.1103/PhysRevC.103.025805
2021HE16 Phys.Rev. C 103, 054613 (2021) F.Heim, M.Muller, S.Wilden, A.Zilges Absolute 96Mo(p, n)96m+gTc cross sections and a new branching for the 96mTc decay NUCLEAR REACTIONS 96Mo(p, n)96Tc/96mTc, E=3.9-5.4 MeV; measured Eγ, Iγ; deduced production σ(E) for 96Tc g.s. and 96mTc, total σ(E) using activation method, branching ratio for 96mTc decay to 96Tc g.s. Comparison with previous experimental results, and with statistical model calculations using Hauser-Feshbach TALYS code v1.95. RADIOACTIVITY 96mTc(EC)[from 96Mo(p, n), E=3.9-5.4 MeV]; measured Eγ, Iγ, branching ratio for the ϵ decay mode. Comparison with literature data.
doi: 10.1103/PhysRevC.103.054613
2021HE17 Phys.Rev. C 103, 055803 (2021) F.Heim, J.Mayer, M.Muller, P.Scholz, A.Zilges Investigating the 109Ag(p, γ)110Cd reaction and its underlying nuclear physics NUCLEAR REACTIONS 109Ag(p, γ)110Cd, E=2.5-5.0 MeV from the FN-Tandem accelerator of the University of Cologne; measured Eγ, Iγ, γ(θ) using HORUS array of 14 HPGe detectors; deduced total σ(E). Comparison with previous experimental results and Hauser-Feshbach calculations. 106,108,110,112Cd; analyzed dipole components of the γ-ray strength functions and nuclear level density (NLD) using D1M+QRPA+0lim γ-SF model and microscopic NLD model.
doi: 10.1103/PhysRevC.103.055803
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
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
2021WE16 Phys.Rev.Lett. 127, 242501 (2021) M.Weinert, M.Spieker, G.Potel, N.Tsoneva, M.Muscher, J.Wilhelmy, A.Zilges Microscopic Structure of the Low-Energy Electric Dipole Response of 120Sn NUCLEAR REACTIONS 119Sn(d, p), E=8.5 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray yields, pygmy dipole resonance. Detailed structure input from energy-density functional plus quasiparticle-phonon model theory with reaction theory.
doi: 10.1103/PhysRevLett.127.242501
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
2020HE08 Phys.Rev. C 101, 035805 (2020) F.Heim, P.Scholz, M.Korschgen, J.Mayer, M.Muller, A.Zilges Insights into the statistical γ-decay behavior of 108Cd via radiative proton capture NUCLEAR REACTIONS 107Ag(p, γ)108Cd, E=2.0, 2.7, 3.5, 4, 4.5, 5.0 MeV; measured Eγ, Iγ, γγ-coin, γ(θ) using the HORUS spectrometer at the Institute for Nuclear Physics, Cologne. 108Cd; deduced levels, resonances, J, π, partial and total σ(E) in the astrophysical energy region, E1 γ-strength function (γ-SF), total γ-decay width, nuclear level density (NLD). Comparison with previous experimental data, and with statistical model calculations based on Gogny D1M HFB+QRPA interaction. Relevance to mechanism of the p process.
doi: 10.1103/PhysRevC.101.035805
2020HE09 Phys.Rev. C 101, 035807 (2020) F.Heim, P.Scholz, J.Mayer, M.Muller, A.Zilges Constraining nuclear properties in 94Mo via a 93Nb(p, γ)94Mo total cross section measurement NUCLEAR REACTIONS 93Nb(p, γ), E=1.96-4.98 MeV; measured Eγ, Iγ, γγ-coin, γ(θ) using the HORUS spectrometer at the Institute for Nuclear Physics, Cologne. 94Mo; deduced levels, J, π, nuclear level density (NLD), E1, M1 and E1+M1 g-strength functions (γ-SF), partial and total σ(E). 94Mo(γ, p), (γ, n), T=2.0-3.5 GK; deduced reaction rates, and compared with data in REACLIB and STARLIB libraries. Comparison with previous experimental data, and with statistical model calculations based on Gogny D1M HFB+QRPA interaction. Relevance to mechanism of the p process.
doi: 10.1103/PhysRevC.101.035807
2020MU11 Phys.Rev. C 102, 014317 (2020) M.Muscher, J.Wilhelmy, R.Massarczyk, R.Schwengner, M.Grieger, J.Isaak, A.R.Junghans, T.Kogler, F.Ludwig, D.Savran, D.Symochko, M.P.Takacs, M.Tamkas, A.Wagner, A.Zilges High-sensitivity investigation of low-lying dipole strengths in 120Sn NUCLEAR REACTIONS 120Sn(γ, γ'), E=9.5 MeV bremsstrahlung beam; measured Eγ, Iγ, γ(θ) using four HPGe detectors at the γELBE facility of Helmholtz-Zentrum Dresden-Rossendorf. 120Sn; deduced levels, pygmy dipole resonances (PDR), J, π, Γ02/Γ, photoabsorption σ(Eγ), B(E1), Thomas-Reiche-Kuhn sum rule using statistical model with constant-temperature level density. Comparison with experimental results for 120Sn(p, p').
doi: 10.1103/PhysRevC.102.014317
2020SC04 Phys.Rev. C 101, 045806 (2020) P.Scholz, M.Guttormsen, F.Heim, A.C.Larsen, J.Mayer, D.Savran, M.Spieker, G.M.Tveten, A.V.Voinov, J.Wilhelmy, F.Zeiser, A.Zilges Primary γ-ray intensities and γ-strength functions from discrete two-step γ-ray cascades in radiative proton-capture experiments NUCLEAR REACTIONS 63,65Cu(p, γ), E=2.0, 3.5 MeV; measured Eγ, Iγ, γγ-coin, primary γ rays, two-step γ-ray cascades (TSCs) using the HORUS array of 14 HPGe detectors at the Institute for Nuclear Physics, University of Cologne. 64,66Zn; deduced levels, J, π, primary γ-ray intensities, dipole strength functions, and absolute γ-ray strength functions. Comparison with theoretical predictions, generalized Brink-Axel hypothesis, and other experimental results. Relevance of reaction rates of radiative capture reactions to nucleosynthesis of heavy nuclei in explosive stellar environments.
doi: 10.1103/PhysRevC.101.045806
2020SC12 Phys.Rev. C 102, 045811 (2020) P.Scholz, H.Wilsenach, H.W.Becker, A.Blazhev, F.Heim, V.Foteinou, U.Giesen, C.Munker, D.Rogalla, P.Sprung, A.Zilges, K.Zuber New measurement of the 144Sm(α, γ)148Gd reaction rate for the γ process NUCLEAR REACTIONS 144Sm(α, γ)148Gd, E=10.66-12.66 MeV; measured Eα, Iα from α decay of 148Gd at , σ(E) using activation method by irradiating the 144Sm targets at the cyclotron of PTB-Braunschweig, and α counting at TU-Dresden; deduced astrophysical reaction rates from 1.5-4.5 GK. Comparison with earlier experimental results, and with statistical-model using the TALYS code and the latest parametrizations of α+ nucleus optical model potentials (OMPs). Reaction rates compared with data in Reaclib database.
doi: 10.1103/PhysRevC.102.045811
2020SI09 Eur.Phys.J. A 56, 105 (2020) J.Sinclair, M.Scheck, S.W.Finch, Krishichayan, U.Friman-Gayer, W.Tornow, G.Battaglia, T.Beck, R.Chapman, M.M.R.Chishti, Ch.Fransen, R.Gonzales, E.Hoemann, J.Isaak, R.V.F.Janssens, D.A.Jaroszynski, S.Johnson, M.D.Jones, J.M.Keatings, N.Kelly, J.Kleemann, D.Little, B.Loher, K.R.Mashtakov, M.Muscher, D.O'Donnell, O.Papst, E.E.Peters, D.Savran, M.Schilling, R.Schwengner, P.Spagnoletti, M.Spieker, V.Werner, J.Wilhelmy, O.Wieland, S.W.Yates, A.Zilges Firm spin and parity assignments for high-lying, low-spin levels in stable Si isotopes
doi: 10.1140/epja/s10050-020-00118-8
2020SP05 Phys.Rev.Lett. 125, 102503 (2020) M.Spieker, A.Heusler, B.A.Brown, T.Faestermann, R.Hertenberger, G.Potel, M.Scheck, N.Tsoneva, M.Weinert, H.-F.Wirth, A.Zilges Accessing the Single-Particle Structure of the Pygmy Dipole Resonance in 208Pb NUCLEAR REACTIONS 207Pb(d, p), E=22 MeV; measured reaction products, Ep, Ip; deduced σ(θ), B(E1), transition densities, Pygmy Dipole Resonance. Comparison with large-scale shell model calculations.
doi: 10.1103/PhysRevLett.125.102503
2020SY01 Phys.Lett. B 809, 135748 (2020) I.Syndikus, M.Petri, A.O.Macchiavelli, S.Paschalis, C.A.Bertulani, T.Aumann, H.Alvarez-Pol, L.Atar, S.Beceiro Novo, J.Benlliure, J.M.Boillos, K.Boretzky, M.J.G.Borge, B.A.Brown, M.Caamano, C.Caesar, E.Casarejos, W.Catford, J.Cederkall, S.Chakraborty, L.V.Chulkov, D.Cortina-Gil, E.Cravo, R.Crespo, U.Datta Pramanik, I.Dillmann, P.Diaz Fernandez, Z.Elekes, J.Enders, F.Farinon, L.M.Fraile, D.Galaviz, H.Geissel, R.Gernhauser, P.Golubev, K.Gobel, M.Heil, M.Heine, A.Heinz, A.Henriques, M.Holl, H.T.Johansson, B.Jonson, N.Kalantar-Nayestanaki, R.Kanungo, A.Kelic-Heil, T.Kroll, N.Kurz, C.Langer, T.Le Bleis, J.Machado, J.Marganiec-Galazka, E.Nacher, T.Nilsson, C.Nociforo, V.Panin, A.Perea, S.B.Pietri, R.Plag, A.Rahaman, R.Reifarth, A.Revel, G.Ribeiro, C.Rigollet, D.M.Rossi, D.Savran, H.Scheit, H.Simon, O.Sorlin, O.Tengblad, Y.Togano, M.Vandebrouck, V.Volkov, F.Wamers, C.Wheldon, G.L.Wilson, J.S.Winfield, H.Weick, P.Woods, D.Yakorev, M.Zhukov, A.Zilges, K.Zuber Probing the Z=6 spin-orbit shell gap with (p, 2p) quasi-free scattering reactions NUCLEAR REACTIONS C, H(17N, X)16C, E=438 MeV/nucleon; C, H(19N, X)18C, E=430 MeV/nucleon; C, H(21N, X)20C, E=422 MeV/nucleon; measured reaction products, Eγ, Iγ; deduced σ, spectroscopic factors, proton component of spin-orbit splitting.
doi: 10.1016/j.physletb.2020.135748
2020VA01 Phys.Rev.Lett. 124, 022501 (2020) V.Vaquero, A.Jungclaus, T.Aumann, J.Tscheuschner, E.V.Litvinova, J.A.Tostevin, H.Baba, D.S.Ahn, R.Avigo, K.Boretzky, A.Bracco, C.Caesar, F.Camera, S.Chen, V.Derya, P.Doornenbal, J.Endres, N.Fukuda, U.Garg, A.Giaz, M.N.Harakeh, M.Heil, A.Horvat, K.Ieki, N.Imai, N.Inabe, N.Kalantar-Nayestanaki, N.Kobayashi, Y.Kondo, S.Koyama, T.Kubo, I.Martel, M.Matsushita, B.Million, T.Motobayashi, T.Nakamura, N.Nakatsuka, M.Nishimura, S.Nishimura, S.Ota, H.Otsu, T.Ozaki, M.Petri, R.Reifarth, J.L.Rodriguez-Sanchez, D.Rossi, A.T.Saito, H.Sakurai, D.Savran, H.Scheit, F.Schindler, P.Schrock, D.Semmler, Y.Shiga, M.Shikata, Y.Shimizu, H.Simon, D.Steppenbeck, H.Suzuki, T.Sumikama, D.Symochko, I.Syndikus, H.Takeda, S.Takeuchi, R.Taniuchi, Y.Togano, J.Tsubota, H.Wang, O.Wieland, K.Yoneda, J.Zenihiro, A.Zilges Fragmentation of Single-Particle Strength around the Doubly Magic Nucleus 132Sn and the Position of the 0f5/2 Proton-Hole State in 131In NUCLEAR REACTIONS 4He(132Sn, n), (132Sn, p), E=203 MeV/nucleon; 9Be(238U, X)132Sn, E=345 MeV/nucleon; measured reaction products, Eγ, Iγ. 131Sn, 131In; deduced γ-ray energies, spectroscopic factors, strong fragmentation of single-hole strength. Comparison with theoretical calculations.
doi: 10.1103/physrevlett.124.022501
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
2019FA10 Acta Phys.Pol. B50, 475 (2019) M.Farber, A.Bohn, V.Everwyn, M.Muscher, S.G.Pickstone, S.Prill, P.Scholz, M.Spieker, M.Weinert, J.Wilhelmy, A.Zilges Study of Dipole Excitations in 124Sn via (p, p' γ) at 15 MeV NUCLEAR REACTIONS 124Sn(p, p'), E=15 MeV; measured Ep, Eγ, Iγ, pγ-coin. 124Sn; deduced levels, J, π, γ-decay branching ratios for low-spin states. Combined SONIC (Si-detectors) and HORUS (HPGe-detectors) arrays. Comparison to (γ, γ') and (α, α') experimental data.
doi: 10.5506/aphyspolb.50.475
2019FO13 Eur.Phys.J. A 55, 67 (2019) V.Foteinou, M.Axiotis, S.Harissopulos, P.Dimitriou, G.Provatas, A.Lagoyannis, H.-W.Becker, D.Rogalla, A.Zilges, A.Schreckling, A.Endres Cross section measurements of proton capture reactions on Mo isotopes relevant to the astrophysical p process NUCLEAR REACTIONS 92,94,96,97,98,100Mo(p, γ), E=2-6.2 MeV; measured Eγ, Iγ using 4π γ-summing detector; deduced γ-ray energy spectra, total σt, partial σgs and to metastable state σm and astrophysical S-factors St, Sgs, Sm vs E(cm); calculated σ's, S-factors vs E(cm) using TALYS-1.9 code; deduced nucleon-nucleus and α-particle-nucleus optical model parameters; deduced stellar reaction rates of (p, γ) reactions vs temperature, compared to BRUSLIB values.
doi: 10.1140/epja/i2019-12738-x
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
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
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
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
2019TS06 Nucl.Phys. A990, 183 (2019) N.Tsoneva, M.Spieker, H.Lenske, A.Zilges Fine structure of the pygmy quadrupole resonance in 112, 114Sn
doi: 10.1016/j.nuclphysa.2019.07.008
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
2018SP01 Phys.Rev. C 97, 054319 (2018) M.Spieker, P.Petkov, E.Litvinova, C.Muller-Gatermann, S.G.Pickstone, S.Prill, P.Scholz, A.Zilges Shape coexistence and collective low-spin states in 112, 114Sn studied with the (p, p'γ) Doppler-shift attenuation coincidence technique NUCLEAR REACTIONS 112,114Sn(p, p'γ), E=8 MeV; measured Eγ, Iγ, pγ-, γγ-coin, Eγ(θ), level half-lives by DSAM using SONIC-HORUS combined spectroscopy setup at the Institute for Nuclear Physics of the University of Cologne. 112,114Sn; deduced levels, J, π, multipolarities, mixing ratios, B(E2), B(E1) γ-decay branching ratios for low-spin states, shape coexistence in low-spin members of the proton 2p-2h intruder configurations, and candidates for 3-phonon and quadrupole-octupole coupled states. Comparison with previous experimental values, and predictions of the sd IBM-2 calculations. Comparison of B(E2) values with those in 108,110Pd, 116,118Xe. Systematics of low-lying single-particle states in A=111-125 odd-A Sn isotopes, 1-, 3- and 5- states and B(E1) for 1- states in A=112-124 even-A Sn isotopes.
doi: 10.1103/PhysRevC.97.054319
2018SP02 Phys.Rev. C 97, 064319 (2018) M.Spieker, S.Pascu, D.Bucurescu, T.M.Shneidman, T.Faestermann, R.Hertenberger, H.-F.Wirth, N.-V.Zamfir, A.Zilges High-resolution (p, t) study of low-spin states in 240Pu: Octupole excitations, α clustering, and other structure features NUCLEAR REACTIONS 242Pu(p, t), E=24 MeV; measured E(t), I(t), differential σ(θ), and total σ using the Q3D magnetic spectrograph of MLL-Munich. 240Pu; deduced levels, J, π, configurations, rotational band structure, moments of inertia of band members, origin of excited 0+ states, B(E1)/B(E2), summed B(E1) strength. Comparison with previous experimental values, and spdf IBM and α-cluster model theoretical predictions. Comparison of experimental σ(θ) values with coupled-channel distorted-wave Born approximation (DWBA) calculations with CHUCK3 code. 186W, 232Th(p, t), E=24 MeV; measured E(t), I(t); deduced levels, used for calibration of levels in 240Pu. NUCLEAR STRUCTURE 238,240Pu, 226,228,230,232Th, 232,234,238U, 224,226,228Ra; analyzed experimental excitation energy, B(E1), B(E2) and B(E3) values; deduced octupole correlations, effect of negative-parity single particle states and potential role of double-octupole or α-clustering states on enhanced B(E1).
doi: 10.1103/PhysRevC.97.064319
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
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
2017PE14 Phys.Rev. C 96, 034326 (2017); Erratum Phys.Rev. C 98, 019904 (2018) P.Petkov, C.Muller-Gatermann, A.Dewald, A.Blazhev, C.Fransen, J.Jolie, P.Scholz, K.O.Zell, A.Zilges Lifetime measurements with improved precision in 30, 32S and possible influence of large-scale clustering on the appearance of strongly deformed states NUCLEAR REACTIONS 28Si(3He, n)30S, E=8 MeV; 29Si(α, n)32S, E=9 MeV; measured Eγ, Iγ, γγ-coin, level half-lives by Doppler-shift attenuation method (DSAM) using HORUS array of HPGe detectors at the FN Tandem accelerator facility of the University of Cologne. 30,32S; deduced levels, J, π, relative population, B(E2), B(M1). Comparison with previous experimental results for level half-lives, and with two-band mixing calculation. Systematics of low-lying quadrupole states in 28,30,32,34,36,38S. 32S; discussed electromagnetic E2 transition strengths and quadrupole moment in terms of two doubly magic 16O clusters. 80Zr; discussed superdeformed yrast band in terms of two 40Ca clusters.
doi: 10.1103/PhysRevC.96.034326
2017PI13 Nucl.Instrum.Methods Phys.Res. A875, 104 (2017) S.G.Pickstone, M.Weinert, M.Farber, F.Heim, E.Hoemann, J.Mayer, M.Muscher, S.Prill, P.Scholz, M.Spieker, V.Vielmetter, Ju.Wilhelmy, A.Zilges Combining α-ray and particle spectroscopy with SONICatHORUS NUCLEAR REACTIONS 92Mo(p, pγ), E=10.5 MeV; 119Sn(d, pγ), E=10 MeV; 60Ni(p, pγ), E=15 MeV; 94Mo(p, pγ), E=13.5 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, J, π, branching ratios.
doi: 10.1016/j.nima.2017.09.016
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
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
2016MA25 Phys.Rev. C 93, 045809 (2016) J.Mayer, S.Goriely, L.Netterdon, S.Peru, P.Scholz, R.Schwengner, A.Zilges Partial cross sections of the 92Mo(p, γ) reaction and the γ strength in 93Tc NUCLEAR REACTIONS 92Mo(p, γ)93Tc, E=3.7-5.3 MeV; measured Eγ, Iγ, γ(θ), γγ-coin, total σ(E) for 93Tc ground state and isomer by in-beam method using HORUS array at Cologne FN tandem accelerator facility. 93Tc; deduced levels, J, π, E1 and M1 γ-strength functions. Comparison with previous experimental data for σ(E), and with Hauser-Feshbach calculations by using statistical model code TALYS using Gogny- or Skyrme-HFB+QRPA E1 strength and shell model M1 strength.
doi: 10.1103/PhysRevC.93.045809
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
2016SC12 Phys.Lett. B 761, 247 (2016) P.Scholz, F.Heim, J.Mayer, C.Munker, L.Netterdon, F.Wombacher, A.Zilges Constraints on the α + nucleus optical-model potential via α-induced reaction studies on 108Cd NUCLEAR REACTIONS 108Cd(α, γ), (α, n), E=12-13.5 MeV; measured reaction products, Eγ, Iγ; deduced σ, optical model potential parameters.
doi: 10.1016/j.physletb.2016.08.040
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
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
2015HE17 Nucl.Instrum.Methods Phys.Res. A794, 171 (2015) A.Hennig, V.Derya, M.N.Mineva, P.Petkov, S.G.Pickstone, M.Spieker, A.Zilges Lifetime measurement of excited low-spin states via the (p, p'γ) reaction NUCLEAR REACTIONS 96Ru(p, p'), E=7 MeV; measured reaction products, Eγ, Iγ; deduced energy levels, J, π, T1/2. Doppler-shift attenuation method (DSAM) following the inelastic proton scattering reaction, comparison with available data.
doi: 10.1016/j.nima.2015.05.024
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
2015NE05 Phys.Rev. C 91, 035801 (2015) L.Netterdon, J.Mayer, P.Scholz, A.Zilges Total and partial cross sections of the 112Sn (α, γ) 116Te reaction measured via in-beam γ-ray spectroscopy NUCLEAR REACTIONS 112Sn(α, γ)116Te, E(cm)=10.1-11.5 MeV; measured Eγ, Iγ, γγ-coin, σ(E) using HORUS array at Cologne, comparison with statistical-model (HFB+QRPA) calculations. 106Cd(α, n), E(cm)=10-12.5 MeV; 106Cd(α, p), E(cm)=9-10.5 MeV; 106Cd(α, γ), E(cm)=7.5-12 MeV; 115,116Sn(α, n), E(cm)=10-15 MeV; 112Sn(α, p), E(cm)=9-12 MeV; comparison of previous experimental data with (TALYS) model calculations. 116Te; deduced levels.
doi: 10.1103/PhysRevC.91.035801
2015NE07 Phys.Lett. B 744, 358 (2015) L.Netterdon, A.Endres, S.Goriely, J.Mayer, P.Scholz, M.Spieker, A.Zilges Experimental constraints on the γ-ray strength function in 90Zr using partial cross sections of the 89Y(p, γ)90Zr reaction NUCLEAR REACTIONS 89Y(p, γ), E=3.65-4.7 MeV; measured reaction products, Eγ, Iγ; deduced σ, energies, J, π, E1 strength, reaction rates. Comparison with available data.
doi: 10.1016/j.physletb.2015.04.018
2015OR03 Nucl.Phys. A940, 194 (2015) A.Ornelas, G.G.Kiss, P.Mohr, D.Galaviz, Zs.Fulop, Gy.Gyurky, Z.Mate, T.Rauscher, E.Somorjai, K.Sonnabend, A.Zilges The 106Cd(α, α)106Cd elastic scattering in a wide energy range for γ process studies NUCLEAR REACTIONS 106Cd(α, α), E=16.1, 17.7, 19.6 MeV; measured Eα, Iα(θ). 106Cd(α, α), E(cm)=15.6-26.0 MeV; calculated σ(θ) using ATOMKI-V1 optical potential; deduced optical model parameters from fit to available data. Potentials compared with those obtained by others using different potentials. 106Cd(α, n), (α, p), (α, γ), E(cm)=7-13 MeV; calculated S-factor using different potentials. Compared with data.
doi: 10.1016/j.nuclphysa.2015.04.008
2015PA14 Phys.Rev. C 91, 034321 (2015) S.Pascu, D.Bucurescu, Gh.Cata-Danil, V.Derya, M.Elvers, D.Filipescu, D.G.Ghita, T.Glodariu, A.Hennig, C.Mihai, N.Marginean, R.Marginean, A.Negret, L.Netterdon, S.G.Pickstone, T.Sava, M.Spieker, L.Stroe, N.V.Zamfir, A.Zilges Detailed spectroscopy of quadrupole and octupole states in 168Yb NUCLEAR REACTIONS 166Er(α, 2n), E=25.5 MeV; measured Eγ, Iγ, γγ-coin, level half-lives by γγ(t) using HORUS array at tandem accelerator facility in Cologne. 168Yb; deduced levels, J, K, π, bands, β, γ and octupole vibrational bands, B(E1), B(E2), branching ratios compared with Alaga rules. Systematics of branching ratios for 2- states of Kπ=2- octupole-vibrational band in A=154-186 Gd, Dy, Er, Yb, Hf W nuclei. Comparison of level structure of 168Yb with IBM-spdf calculations. NUCLEAR STRUCTURE 168Yb; calculated levels, J, K, π, bands, B(E1) using IBM-spdf. Comparison with experimental data.
doi: 10.1103/PhysRevC.91.034321
2015SP02 Phys.Rev.Lett. 114, 192504 (2015) M.Spieker, S.Pascu, A.Zilges, F.Iachello Origin of Low-Lying Enhanced E1 Strength in Rare-Earth Nuclei NUCLEAR STRUCTURE 142,144,146,148,150Nd, 148,150Sm, 156,160Gd, 162,164Dy; calculated B(E1) distributions. spdf interacting boson model calculations, comparison with experimental data.
doi: 10.1103/PhysRevLett.114.192504
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
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
2014NE13 Phys.Rev. C 90, 035806 (2014) L.Netterdon, A.Endres, G.G.Kiss, J.Mayer, T.Rauscher, P.Scholz, K.Sonnabend, Zs.Torok, A.Zilges Cross-section measurement of the 130Ba(p, γ)131La reaction for γ-process nucleosynthesis NUCLEAR REACTIONS 130Ba(p, γ), E(cm)=3.57-4.96 MeV; measured Eγ, Iγ, σ(E) using activation method at the Institute for Nuclear Physics, Cologne. Comparison with Hauser-Feshbach calculations using TALYS and SMARAGD statistical model codes with different proton+nucleus optical model potentials; deduced stellar reaction rates and compared with results from NONSMOKER code.
doi: 10.1103/PhysRevC.90.035806
2014NE18 Nucl.Instrum.Methods Phys.Res. A 754, 94 (2014) L.Netterdon, V.Derya, J.Endres, C.Fransen, A.Hennig, J.Mayer, C.Muller-Gatermann, A.Sauerwein, P.Scholz, M.Spieker, A.Zilges The γ-ray spectrometer HORUS and its applications for nuclear astrophysics NUCLEAR REACTIONS 89Y(p, γ), E=3.5-4.6 MeV; measured products, Eγ, Iγ; deduced σ, σ(E). Data were imported from EXFOR entry O2203.
doi: 10.1016/j.nima.2014.04.025
2014RO15 Eur.Phys.J. A 50, 112 (2014) M.ROder, Z.Elekes, T.Aumann, D.Bemmerer, K.Boretzky, C.Caesar, T.E.Cowan, J.Hehner, M.Heil, M.Kempe, V.Maroussov, O.Nusair, A.V.Prokofiev, R.Reifarth, M.Sobiella, D.Stach, A.Wagner, D.Yakorev, A.Zilges, K.Zuber, for the R3B Collaboration Efficiency determination of resistive plate chambers for fast quasi-monoenergetic neutrons
doi: 10.1140/epja/i2014-14112-0
2014SC30 Phys.Rev. C 90, 065807 (2014) P.Scholz, A.Endres, A.Hennig, L.Netterdon, H.W.Becker, J.Endres, J.Mayer, U.Giesen, D.Rogalla, F.Schluter, S.G.Pickstone, K.O.Zell, A.Zilges Measurement of the 187Re(α, n)190Ir reaction cross section at sub-Coulomb energies using the Cologne Clover Counting Setup NUCLEAR REACTIONS 187Re(α, n)190Ir, E=12.4-14.1 MeV; measured Eγ, Iγ, γγ-coin, σ(E) by activation analysis using Cologne Clover counting setup at the cyclotron of PTB in Braunschweig. GEANT4-based Monte Carlo simulation. Comparison with statistical model calculations using the TALYS code and α optical-model potential. Relevance to γ-process nucleosynthesis.
doi: 10.1103/PhysRevC.90.065807
2013BE38 Phys.Rev.Lett. 111, 172501 (2013) J.Beller, N.Pietralla, J.Barea, M.Elvers, J.Endres, C.Fransen, J.Kotila, O.Moller, A.Richter, T.R.Rodriguez, C.Romig, D.Savran, M.Scheck, L.Schnorrenberger, K.Sonnabend, V.Werner, A.Zilges, M.Zweidinger Constraint on 0νββ Matrix Elements from a Novel Decay Channel of the Scissors Mode: The Case of 154Gd NUCLEAR REACTIONS 154Gd(γ, γ'), E<4.5 MeV; measured reaction products, Eγ, Iγ; deduced level energies, J, π, B(M1), B(E1). Comparison with IBM-2 and EDF calculations. RADIOACTIVITY 154Sm(2β-); calculated neutrinoless nuclear matrix elements.
doi: 10.1103/PhysRevLett.111.172501
2013DE39 Nucl.Phys. A906, 94 (2013) V.Derya, J.Endres, M.Elvers, M.N.Harakeh, N.Pietralla, C.Romig, D.Savran, M.Scheck, F.Siebenhuhner, V.Stoica, H.Woertche, A.Zilges Study of the pygmy dipole resonance in 94Mo using the (α, α'γ) coincidence technique NUCLEAR REACTIONS 94Mo(α, α'), E=136 MeV; measured products, 94Mo; deduced σ(θ). Data were imported from EXFOR entry O2138.
doi: 10.1016/j.nuclphysa.2013.02.018
2013LO05 Nucl.Instrum.Methods Phys.Res. A723, 136 (2013) B.Loher, V.Derya, T.Aumann, J.Beller, N.Cooper, M.Duchene, J.Endres, E.Fiori, J.Isaak, J.Kelley, M.Knorzer, N.Pietralla, C.Romig, D.Savran, M.Scheck, H.Scheit, J.Silva, A.Tonchev, W.Tornow, H.Weller, V.Werner, A.Zilges The high-efficiency γ-ray spectroscopy setup γ3 at HIγS NUCLEAR REACTIONS 32S(γ, γ'), E=8.125 MeV; measured reaction products, Eγ, Iγ; deduced precise value for the branching ratio for 1+ to 2+ transition.
doi: 10.1016/j.nima.2013.04.087
2013NE16 Nucl.Phys. A916, 149 (2013) L.Netterdon, P.Demetriou, J.Endres, U.Giesen, G.G.Kiss, A.Sauerwein, T.Szucs, K.O.Zell, A.Zilges Investigation of α-induced reactions on the p nucleus 168Yb NUCLEAR REACTIONS 168Yb(α, γ), (α, n), E=12.9-15.1 MeV; measured activation and post-β-decay Eγ, Iγ using HPGe; calculated σ using TALYS-1.4 code with RIPL3 parameters. 171,172Hf deduced (α, γ) and (α, n) σ 171Lu deduced normalization factor.
doi: 10.1016/j.nuclphysa.2013.08.002
2013RO28 Phys.Rev. C 88, 044331 (2013) C.Romig, J.Beller, J.Glorius, J.Isaak, J.H.Kelley, E.Kwan, N.Pietralla, V.Yu.Ponomarev, A.Sauerwein, D.Savran, M.Scheck, L.Schnorrenberger, K.Sonnabend, A.P.Tonchev, W.Tornow, H.R.Weller, A.Zilges, M.Zweidinger Low-lying dipole strength of the open-shell nucleus 94Mo NUCLEAR REACTIONS 94Mo(γ, γ'), (polarized γ, γ'), E=5.47, 6.05, 6.44, 6.61, 6.89, 7.65, 8.70 MeV; measured Eγ, Iγ, γγ(θ), γ-polarization asymmetry using DHIPS setup at S-DALINAC, and HiγS at TUNL and DFELL facilities. 94Mo; deduced levels, J, π, Γ20/Γ, branching ratios, B(E1), B(M1), E1 strength distributions, feeding of first 2+ level, elastic σ. Comparison with QPM calculations, and statistical model using DICEBOX computer code.
doi: 10.1103/PhysRevC.88.044331
2013SA28 Prog.Part.Nucl.Phys. 70, 210 (2013) Experimental studies of the Pygmy Dipole Resonance
doi: 10.1016/j.ppnp.2013.02.003
2013SC20 Phys.Rev. C 88, 044304 (2013) M.Scheck, V.Yu.Ponomarev, M.Fritzsche, J.Joubert, T.Aumann, J.Beller, J.Isaak, J.H.Kelley, E.Kwan, N.Pietralla, R.Raut, C.Romig, G.Rusev, D.Savran, L.Schorrenberger, K.Sonnabend, A.P.Tonchev, W.Tornow, H.R.Weller, A.Zilges, M.Zweidinger Photoresponse of 60Ni below 10-MeV excitation energy: Evolution of dipole resonances in fp-shell nuclei near N=Z NUCLEAR REACTIONS 60Ni(γ, γ'), (polarized γ, γ'), E<10 MeV; 58Ni(polarized γ, γ'), E<10 MeV; measured Eγ, Iγ, γγ(θ), γ-ray polarization, integrated σ, γ-branching ratios using High-intensity photon setup at S-DALINAC facility. 58,60Ni; deduced levels, J, π, width, level half-lives, B(E1), B(M1), B(E2), E1 and M1 strength distributions. Thomas-Reiche-Kuhn sum rule. Pygmy-dipole resonances. Comparison with QPM calculations.
doi: 10.1103/PhysRevC.88.044304
2013SP03 Phys.Rev. C 88, 041303 (2013) M.Spieker, D.Bucurescu, J.Endres, T.Faestermann, R.Hertenberger, S.Pascu, S.Skalacki, S.Weber, H.-F.Wirth, N.-V.Zamfir, A.Zilges Possible experimental signature of octupole correlations in the 0+2 states of the actinides NUCLEAR REACTIONS 242Pu(p, t), E=24 MeV; measured triton spectra, σ(θ) using Q3D spectrograph at MLL-Munich facility. 240Pu; deduced levels, J, π, L-transfer, transition strengths for 0+ excited states. DWBA analysis of σ(θ) data. Comparison with summed relative (p, t) strengths and B(E1)/B(E2) ratios with other actinide nuclei and with spdf interacting boson model calculations. Possible double-octupole structure of first excited 0+ states in actinides. Systematics of energies of first 3- and second 0+ states in N=132-148, Ra, Th, U and Pu nuclei.
doi: 10.1103/PhysRevC.88.041303
2012DE31 J.Phys.:Conf.Ser. 366, 012012 (2012) V.Derya, J.Endres, M.N.Harakeh, D.Savran, H.J.Wortche, A.Zilges Systematic Study of the Pygmy Dipole Resonance NUCLEAR REACTIONS 48Ca, 94Mo(α, α'γ), E=136 MeV; measured Eα, Iα, Eγ, Iγ, αγ-coin. 94Mo deduced singles α-scattering σ. 48Ca deduced γ energy spectrum in αγ coincidence, γ transitions. Compared with (polarized γ, γ') parity measurement and with published B(E1) from (γ, γ').
doi: 10.1088/1742-6596/366/1/012012
2012EN02 Phys.Rev. C 85, 064331 (2012) J.Endres, D.Savran, P.A.Butler, M.N.Harakeh, S.Harissopulos, R.-D.Herzberg, R.Krucken, A.Lagoyannis, E.Litvinova, N.Pietralla, V.Yu.Ponomarev, L.Popescu, P.Ring, M.Scheck, F.Schluter, K.Sonnabend, V.I.Stoica, H.J.Wortche, A.Zilges Structure of the pygmy dipole resonance in 124Sn NUCLEAR REACTIONS 124Sn(α, α'), E=136 MeV; measured Eγ, Eα, αγ-coin, αγ(θ) using Big-Bite magnetic Spectrometer at KVI facility; deduced pygmy dipole resonances, levels, differential σ. Comparison with B(E1) strengths in (γ, γ'). Comparison with quasiparticle-phonon model calculations and relativistic quasiparticle random-phase approximations.
doi: 10.1103/PhysRevC.85.064331
2012KU07 Eur.Phys.J. A 48, 1 (2012) C.Kuppersbusch, S.Pascu, P.von Brentano, D.Bucurescu, Gh.Cata-Danil, D.Deleanu, J.Endres, M.Elvers, D.Filipescu, C.Friessner, D.G.Ghita, T.Glodariu, C.Mihai, N.M.Marginean, R.Marginean, A.Negret, T.Sava, L.Stroe, V.Werner, N.V.Zamfir, K.-O.Zell, A.Zilges Low-spin excitations in 146Sm NUCLEAR REACTIONS 143Nd(α, n), E=19 MeV;144Nd(α, 2n), E=23 MeV; measured Eγ, Iγ(θ), γγ-coin using HPGe; calculated levels, J, π, B(E1), B(E2) using IBA-spdf OCTUPOLE code, structure of quadrupole-multipole multiplet using harmonic vibrational model; deduced levels, J, π, γ transitions, B(E1), B(E2), quadrupole moment. Compared with neighbouring nuclei.
doi: 10.1140/epja/i2012-12001-2
2012OR03 J.Phys.:Conf.Ser. 337, 012030 (2012) A.Ornelas, D.Galaviz, Zs.Fulop, Gy.Gyurky, G.Kiss, Z.Mate, P.Mohr, T.Rauscher, E.Somorjai, K.Sonnabend, A.Zilges Investigation of α-nuclear potential families from elastic scattering experiments NUCLEAR REACTIONS 106Cd(α, γ), E(cm)=7-12 MeV;106Cd(α, n), E(cm)=10-12 MeV; calculated S-factor using various sets of optical model parameters. 106Cd(α, α), E=16.1-18.8 MeV; calculated σ(θ) using various sets of optical model parameters. Compared with published data of the same group.
doi: 10.1088/1742-6596/337/1/012030
2012PA17 Phys.Rev. C 85, 064315 (2012) S.Pascu, J.Endres, N.V.Zamfir, A.Zilges Study of the pygmy dipole resonance in the interacting boson approximation framework NUCLEAR STRUCTURE 136Xe, 138Ba, 140Ce, 142Nd, 144Sm; calculated pygmy dipole resonances (PDR), B(E1) strength, distribution of states as a function of excitation energy. Distribution and fragmentation of the E1 strength. 94Mo; calculated B(E1) strengths for PDR. IBA-spdf model calculations. Comparison with experimental data.
doi: 10.1103/PhysRevC.85.064315
2012PI03 Acta Phys.Pol. B43, 319 (2012) S.G.Pickstone, V.Derya, M.Elvers, J.Endres, C.Fransen, A.Hennig, J.Mayer, L.Netterdon, G.Pascovici, S.Pascu, A.Sauerwein, F.Schluter, P.Scholz, M.Spieker, N.Warr, A.Zilges Digital Data Acquisition for γ and Particle Spectroscopy
doi: 10.5506/APhysPolB.43.319
2012SA41 Phys.Rev. C 86, 035802 (2012) A.Sauerwein, J.Endres, L.Netterdon, A.Zilges, V.Foteinou, G.Provatas, T.Konstantinopoulos, M.Axiotis, S.F.Ashley, S.Harissopulos, T.Rauscher Investigation of the reaction 74Ge(p, γ)75As using the in-beam method to improve reaction network predictions for p nuclei NUCLEAR REACTIONS 74Ge(p, γ)75As, E=2.1-3.7 MeV; measured Eγ, Iγ, γ(θ), total and partial σ(E); deduced stellar reactivity. 75As; deduced levels, J, π, revised J and π for 401- and 1075-keV levels. 74As(n, γ), T=0.10-10.0 GK; deduced stellar reactivity. Comparison with Hauser-Feshbach statistical model calculations. Relevance to origin of the neutron-deficient p nuclides.
doi: 10.1103/PhysRevC.86.035802
2012SC03 Acta Phys.Pol. B43, 333 (2012) F.Schluter, J.Endres, A.Zilges, D.Savran, M.Fritzsche, N.Pietralla, C.Romig, M.Zweidinger, K.Sonnabend The Pygmy Dipole Resonance in 124Sn NUCLEAR REACTIONS 124Sn(γ, γ'), E<7.8 MeV; measured reaction products, Eγ, Iγ. 11B; deduced integral σ, B(E1), elastic transition strength, pigmy dipole resonance. Comparison with GEANT calculations.
doi: 10.5506/APhysPolB.43.333
2011EL09 Phys.Rev. C 84, 054323 (2011) M.Elvers, S.Pascu, T.Ahmed, T.Ahn, V.Anagnostatou, N.Cooper, C.Deng, J.Endres, P.Goddard, A.Heinz, G.Ilie, E.Jiang, C.Kuppersbusch, D.Radeck, D.Savran, N.Shenkov, V.Werner, A.Zilges Investigation of octupole vibrational states in 150Nd via inelastic proton scattering (p, p'γ) NUCLEAR REACTIONS 150Nd(p, p'), E=10.9 MeV; measured Eγ, Iγ, γγ-, pγ-coin using YRAST Ball at Yale. 150Nd; deduced levels, J, π, branching ratios, B(E1) ratios, B(E2) octupole and positive-parity bands. Comparison with interacting boson approximation in sdpf boson space.
doi: 10.1103/PhysRevC.84.054323
2011IS01 Phys.Rev. C 83, 034304 (2011) J.Isaak, D.Savran, M.Fritzsche, D.Galaviz, T.Hartmann, S.Kamerdzhiev, J.H.Kelley, E.Kwan, N.Pietralla, C.Romig, G.Rusev, K.Sonnabend, A.P.Tonchev, W.Tornow, A.Zilges Investigation of low-lying electric dipole strength in the semimagic nucleus 44Ca NUCLEAR REACTIONS 44Ca(polarized γ, γ'), E = 6-10, 9.9 MeV; measured Eγ, Iγ, γ(θ), integrated cross sections, and polarization asymmetry at DHIPS facility using S-DALINAC accelerator, and at HIγS facility. 44Ca; deduced levels, J, π, photon branching ratios, widths, B(E1) and B(M1) transition strengths. Comparisons with dipole strengths in 40,48Ca and with microscopic calculations within the extended theory of finite Fermi systems. Dependence of total E1 strength on neutron number.
doi: 10.1103/PhysRevC.83.034304
2011SA03 Prog.Part.Nucl.Phys. 66, 363 (2011) A.Sauerwein, M.Elvers, J.Endres, J.Hasper, A.Hennig, L.Netterdon, A.Zilges Nuclear physics experiments for the astrophysical p process NUCLEAR REACTIONS 141Pr(α, n), E=15 MeV; 92Mo(p, γ), E=2.5-3.5 MeV; measured reaction products, Eγ, Iγ, γ-γ-coin.; deduced σ. Comparison with NON-SMOKER code calculations and other measurements.
doi: 10.1016/j.ppnp.2011.01.035
2011SA38 Phys.Rev. C 84, 024326 (2011) D.Savran, M.Elvers, J.Endres, M.Fritzsche, B.Loher, N.Pietralla, V.Yu.Ponomarev, C.Romig, L.Schnorrenberger, K.Sonnabend, A.Zilges Fragmentation and systematics of the pygmy dipole resonance in the stable N=82 isotones NUCLEAR REACTIONS 136Xe(γ, γ'), E=8.0, 9.2 MeV; measured Eγ, Iγ, γ(θ) at DHIPS facility. 136Xe; deduced levels, J, π, partial decay widths, B(E1). Comparison with Quasiparticle phonon model calculations. Systematics of measured and calculated B(E1) strengths for pygmy dipole resonances (PDR) in N=82 isotones 136Xe, 138Ba, 140Ce, 142Nd, and 144Sm. Discussed fragmentation of E1 strength.
doi: 10.1103/PhysRevC.84.024326
2011SA48 Phys.Rev. C 84, 045808 (2011) A.Sauerwein, H.-W.Becker, H.Dombrowski, M.Elvers, J.Endres, U.Giesen, J.Hasper, A.Hennig, L.Netterdon, T.Rauscher, D.Rogalla, K.O.Zell, A.Zilges Determination of 141Prα, n)144Pm cross sections at energies of relevance for the astrophysical p process using the γγ coincidence method NUCLEAR REACTIONS 141Pr(α, n)144Pm, E=11-15 MeV; measured Eγ, Iγ, γγ-coin, σ(E) by activation method; deduced astrophysical S factors, α+nucleus optical-model potential. Comparison with Hauser-Feshbach statistical model calculations. 145Pm, 148Gd(γ, α); calculated astrophysical reaction rates. Limitations of the global predictions of α+nucleus optical potentials at astrophysically relevant energies.
doi: 10.1103/PhysRevC.84.045808
2011SA70 J.Phys.:Conf.Ser. 312, 092055 (2011) D.Savran, J.Endres, M.N.Harakeh, N.Pietralla, K.Sonnabend, V.I.Stoica, H.J.Wortche, A.M.van den Berg, A.Zilges Splitting of the Pygmy Dipole Resonance NUCLEAR REACTIONS 94Mo, 124Sn, 138Ba, 140Ce(α, α'γ), E=136 MeV; measured reaction products; deduced σ(α, θ), pygmy dipole resonance B(E1) distribution. Compared with (γ, γ') data measurements.
doi: 10.1088/1742-6596/312/9/092055
2010EN01 Phys.Rev.Lett. 105, 212503 (2010) J.Endres, E.Litvinova, D.Savran, P.A.Butler, M.N.Harakeh, S.Harissopulos, R.-D.Herzberg, R.Krucken, A.Lagoyannis, N.Pietralla, V.Yu.Ponomarev, L.Popescu, P.Ring, M.Scheck, K.Sonnabend, V.I.Stoica, H.J.Wortche, A.Zilges Isospin Character of the Pygmy Dipole Resonance in 124Sn NUCLEAR REACTIONS 124Sn(α, α'), E=136 MeV; measured Eα, Iα, Eγ, Iγ, α-γ-coin.; deduced pigmy resonance σ(θ), B(E1), two groups of states. Comparison with calculations.
doi: 10.1103/PhysRevLett.105.212503
2010HA37 J.Phys.:Conf.Ser. 202, 012005 (2010) J.Hasper, M.Bussing, M.Elvers, J.Endres, A.Zilges In-beam experiments on (p, γ) and (a, γ) reactions for the astrophysical p process NUCLEAR REACTIONS 92Mo(p, γ), E=2400-3500 keV; measured in-beam Eγ, Iγ; deduced σ; calculated σ using TALYS and NON-SMOKER ciodes with several optical model potentials. 92Mo(α, γ), E=9300 keV; measured in-beam Eγ, Iγ, γγ-coin.
doi: 10.1088/1742-6596/202/1/012005
2009EN03 Phys.Rev. C 80, 034302 (2009) J.Endres, D.Savran, A.M.van den Berg, P.Dendooven, M.Fritzsche, M.N.Harakeh, J.Hasper, H.J.Wortche, A.Zilges Splitting of the pygmy dipole resonance in 138Ba and 140Ce observed in the (α, α'γ) reaction NUCLEAR REACTIONS 138Ba, 140Ce(α, α'γ), E=136 MeV; measured Eγ, Iγ, αγ-coin, σ, angular correlations. 138Ba, 140Ce; deduced levels, J, π and E1 strength distributions for pygmy dipole resonances.
doi: 10.1103/PhysRevC.80.034302
2009HA13 Phys.Rev. C 79, 055807 (2009) J.Hasper, D.Galaviz, S.Muller, A.Sauerwein, D.Savran, L.Schnorrenberger, K.Sonnabend, A.Zilges Investigation of photoneutron reactions on 192Os and 191, 193Ir at energies of relevance for the astrophysical p process NUCLEAR REACTIONS 191,193Ir, 192Os(γ, n)190Ir/191Os/191mOs/192Ir, E=7600-9900 keV; measured Eγ, Iγ from radioactive decays of 190Ir, 191Os, 191mOs and 192Ir; deduced yields and σ. Comparison with calculated using NON-SMOKERWEB and TALYS codes.
doi: 10.1103/PhysRevC.79.055807
2009KI16 Phys.Rev. C 80, 045807 (2009) G.G.Kiss, P.Mohr, Zs.Fulop, D.Galaviz, Gy.Gyurky, Z.Elekes, E.Somorjai, A.Kretschmer, K.Sonnabend, A.Zilges, M.Avrigeanu High precision 89Y(α, α)89Y scattering at low energies NUCLEAR REACTIONS 89Y(α, α), E(cm)=15.51, 18.63 MeV; measured Eα, Iα, σ; deduced parameters for local scattering potentials. 89Y(α, α), E(cm)=20.1, 22.0, 23.9, 40.2, 62.2, 158.9 MeV; 92Mo(α, α), E(cm)=15.69, 18.62 MeV; analyzed σ and σ(θ) measurements with different potential parameters. 93Nb; analyzed α-cluster states in 89Y+α system, bands, and B(E2) using potential parameters close to those for the scattering potential.
doi: 10.1103/PhysRevC.80.045807
2009PI14 Phys.Lett. B 681, 134 (2009) N.Pietralla, T.C.Li, M.Fritzsche, M.W.Ahmed, T.Ahn, A.Costin, J.Enders, J.Li, S.Muller, P.von Neumann-Cosel, I.V.Pinayev, V.Yu.Ponomarev, D.Savran, A.P.Tonchev, W.Tornow, H.R.Weller, V.Werner, Y.K.Wu, A.Zilges Competition between excited core states and 1hω single-particle excitations at comparable energies in 207Pb from photon scattering NUCLEAR REACTIONS 208Pb(polarized γ, γ'), E=5.5, 5.6 MeV; measured Eγ, Iγ using the azimuthal nuclear resonance fluorescence intensity asymmetry technique. 206,207,208Pb; deduced levels, J, π.
doi: 10.1016/j.physletb.2009.09.059
2008BU21 Phys.Rev. C 78, 044309 (2008) M.A.Bussing, M.Elvers, J.Endres, J.Hasper, A.Zilges, M.Fritzsche, K.Lindenberg, S.Muller, D.Savran, K.Sonnabend Parity assignments in 140Ce up to 7 MeV using Compton polarimetry NUCLEAR REACTIONS 32S, 140Ce, 208Pb(γ, γ'), E=2-7 MeV; measured Eγ, γ-ray linear polarizations. 140Ce; deduced levels, J, π, asymmetries. Bremsstrahlung beam, Compton polarimetry.
doi: 10.1103/PhysRevC.78.044309
2008DO23 Phys.Rev. C 78, 041602 (2008) H.Dohmann, C.Baumer, D.Frekers, E.-W.Grewe, M.N.Harakeh, S.Hollstein, H.Johansson, L.Popescu, S.Rakers, D.Savran, H.Simon, J.H.Thies, A.M.van den Berg, H.J.Wortche, A.Zilges The (d, 2He) reaction on 96Mo and the double-β decay matrix elements for 96Zr NUCLEAR REACTIONS 96Mo(d, 2He), E=183.5 MeV; measured charged particle spectra, σ(θ). 96Nb; deduced levels, J, π, B(GT). RADIOACTIVITY 96Zr(2β-); analyzed nuclear matrix elements for 2νββ and 0νββ decay modes.
doi: 10.1103/PhysRevC.78.041602
2008EL01 J.Phys.(London) G35, 014027 (2008) M.Elvers, J.Hasper, S.Muller, D.Savran, L.Schnorrenberger, K.Sonnabend, A.Zilges Nuclear astrophysics with real photons?the data acquisition system of the NEPTUN tagger setup
doi: 10.1088/0954-3899/35/1/014027
2008GR10 Phys.Rev. C 77, 064303 (2008) E.-W.Grewe, C.Baumer, H.Dohmann, D.Frekers, M.N.Harakeh, S.Hollstein, H.Johansson, K.Langanke, G.Martinez-Pinedo, F.Nowacki, I.Petermann, L.Popescu, S.Rakers, D.Savran, K.Sieja, H.Simon, J.H.Thies, A.M.van den Berg, H.J.Wortche, A.Zilges Studies on the double-β decay nucleus 64Zn using the (d, 2He) reaction NUCLEAR REACTIONS 64Zn(d, 2He), E=183 MeV; measured charged particle energies, angular distributions, σ(θ). 64Cu; deduced levels, J, π, Gamow-Teller strengths. 64Ni(3He, t); analyzed Gamow-Teller strength distribution. Comparison with shell model calculations.
doi: 10.1103/PhysRevC.77.064303
2008GR19 Phys.Rev. C 78, 044301 (2008) E.-W.Grewe, C.Baumer, H.Dohmann, D.Frekers, M.N.Harakeh, S.Hollstein, H.Johansson, L.Popescu, S.Rakers, D.Savran, H.Simon, J.H.Thies, A.M.van den Berg, H.J.Wortche, A.Zilges The (d, 2He) reaction on 76Se and the double-β-decay matrix elements for A = 76 NUCLEAR REACTIONS 76Se(d, 2He), E=183 MeV; measured particle spectra, σ(θ). 76As; deduced levels, J, π, B(GT), DWBA analysis. Comparison with 76Se(n, p), 76Ge(p, n) reactions.
doi: 10.1103/PhysRevC.78.044301
2008HA04 Phys.Rev. C 77, 015803 (2008) J.Hasper, S.Muller, D.Savran, L.Schnorrenberger, K.Sonnabend, A.Zilges Investigation of photoneutron reactions close to and above the neutron emission threshold in the rare earth region NUCLEAR REACTIONS 148,150Nd, 154Sm, 154,160Gd(γ, n), E=7450-9800 keV [from Cu(e, γ)]; measured Eγ, Iγ, photon flux, normalization, cross section; deduced reaction rates.
doi: 10.1103/PhysRevC.77.015803
2008KI06 J.Phys.(London) G35, 014037 (2008) G.G.Kiss, G.Gyurky, Z.Fulop, E.Somorjai, D.Galaviz, A.Kretschmer, K.Sonnabend, A.Zilges, P.Mohr, M.Avrigeanu Study of the 89Y(α, α)89Y reaction close to the Coulomb barrier NUCLEAR REACTIONS 89Y(α, α), E(cm)=15.5, 18.6 MeV; measured Eα, Iα, σ(θ).
doi: 10.1088/0954-3899/35/1/014037
2008SA18 Eur.Phys.J. A 36, 17 (2008) D.Savran, W.Bayer, D.Galaviz, S.Muller, K.Sonnabend, A.Zilges The photoresponse of 45Sc up to 7 MeV NUCLEAR REACTIONS 45Sc(γ, γ'), E≈5-7 MeV bremsstrahlung; measured Eγ, Iγ, integrated σ. 45Sc deduced level/transition energies, decay widths and B(E1), B(M1) strength distributions. Comparison with 44Ca.
doi: 10.1140/epja/i2008-10555-0
2008SA19 Phys.Rev.Lett. 100, 232501 (2008) D.Savran, M.Fritzsche, J.Hasper, K.Lindenberg, S.Muller, V.Yu.Ponomarev, K.Sonnabend, A.Zilges Fine Structure of the Pygmy Dipole Resonance in 136Xe NUCLEAR REACTIONS 136Xe(γ, γ'), E not given; measured Eγ, Iγ, B(E1). Comparison with quasiparticle phonon model.
doi: 10.1103/PhysRevLett.100.232501
2007OZ04 Nucl.Phys. A788, 385c (2007) B.Ozel, J.Enders, P.von Neumann-Cosel, I.Poltoratska, A.Richter, D.Savran, S.Volz, A.Zilges Systematics of the pygmy dipole resonance in stable tin isotopes from resonant photon scattering NUCLEAR REACTIONS 112,120Sn(γ, γ'), E≈9-11 MeV bremsstrahlung; measured Eγ, Iγ. 112Sn deduced B(E1) strength distribution. Sn analyzed B(E1).
doi: 10.1016/j.nuclphysa.2007.01.069
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