NSR Query Results
Output year order : Descending NSR database version of April 24, 2024. Search: Author = V.Karayonchev Found 42 matches. 2024KN01 Phys.Rev. C 109, 014313 (2024) L.Knafla, K.Nomura, A.Esmaylzadeh, A.Harter, J.Jolie, V.Karayonchev, Y.H.Kim, U.Koster, M.Ley, C.Michelagnoli, A.Pfeil, J.-M.Regis, F.von Spee Investigating the prolate-to-oblate shape phase transition: Lifetime measurements and γ spectroscopy of the low-lying negative parity structure in 193Os
doi: 10.1103/PhysRevC.109.014313
2023AN09 Phys.Rev. C 108, 034303 (2023) A.N.Andreyev, D.Seweryniak, B.Andel, S.Antalic, D.T.Doherty, A.Korichi, C.Barton, L.Canete, M.P.Carpenter, R.M.Clark, P.A.Copp, J.G.Cubiss, J.Heery, Y.Hrabar, H.Huang, T.Huang, V.Karayonchev, F.G.Kondev, T.Lauritsen, Z.Liu, G.Lotay, C.Muller-Gatermann, S.Nandi, C.Page, D.H.Potterveld, P.H.Regan, W.Reviol, D.Rudolph, M.Siciliano, R.S.Sidhu, A.Sitarcik, P.J.Woods, Z.Yue, W.Zhang α decay of the neutron-deficient isotope 190At
doi: 10.1103/PhysRevC.108.034303
2023GA30 Phys.Rev. C 108, 064301 (2023) E.R.Gamba, S.Bottoni, L.W.Iskra, C.Zavaglia, S.Leoni, B.Fornal, N.Cieplicka-Orynczak, G.Benzoni, G.Colombi, F.C.L.Crespi, A.Esmaylzadeh, M.Jentschel, J.Jolie, V.Karayonchev, Y.H.Kim, L.Knafla, U.Koster, M.Ley, N.Marginean, R.Marginean, C.Michelagnoli, M.Polettini, C.Porzio, J-.M.Regis, D.Reygadas, A.Turturica Lifetime measurements in 96Rb via fast-timing techniques: Investigating shape coexistence at A ∼ 100
doi: 10.1103/PhysRevC.108.064301
2023HA29 Phys.Rev. C 108, 024305 (2023) A.Harter, A.Esmaylzadeh, L.Knafla, C.Fransen, F.v.Spee, J.Jolie, M.Ley, V.Karayonchev, J.Fischer, A.Pfeil Lifetime measurements in low yrast states and spectroscopic peculiarities in 182Os NUCLEAR REACTIONS 174Yb(12C, 4n)182Os, E=66 MeV; measured Eγ, Iγ, γγ-coin. 182Os; deduced levels, J, π, T1/2 of yrast 2+, 4+ and 6+ excited states, B(E2), quadrupole deformation parameter. Comparison to interacting boson model 1 (IBM-1) based calculations. Systematics of level energies for Os isotopes - 180,182,184,186Os and for N=106 isotones Hf, W, Os, Pt, Hg. Obtained values support the interpretation of 182Os as a rigid rotor. HORUS spectrometer equipped with 10 LaBr3(Ce) scintillators and 8 HPGe detectors at Cologne 10 MV FN-Tandem accelerator.
doi: 10.1103/PhysRevC.108.024305
2023KA31 Phys.Rev. C 108, 054302 (2023) V.Karayonchev, J.Jolie, D.Bittner, M.Beckers, A.Esmaylzadeh, J.Fischer, C.Fransen, J.Garbe, L.Knafla, C.-D.Lakenbrink, M.Ley Lifetime measurements in 206Po with a shell-model interpretation
doi: 10.1103/PhysRevC.108.054302
2023KL03 Phys.Rev. C 108, 064308 (2023) H.Kleis, K.Arnswald, A.Blazhev, M.Droste, P.Reiter, R.Abels, R.Burggraf, A.Esmaylzadeh, C.Fransen, R.Hirsch, V.Karayonchev, D.Luyken, J.Wehlitz, D.Werner Lifetime measurements of excited states in 57Mn
doi: 10.1103/PhysRevC.108.064308
2023PF03 Phys.Rev. C 108, 034310 (2023) A.Pfeil, K.Nomura, N.Gavrielov, J.-M.Regis, U.Koster, Y.H.Kim, A.Esmaylzadeh, A.Harter, J.Jolie, L.Knafla, M.Ley, V.Karayonchev Lifetime measurements in 99Nb and 99Zr: Investigation of shape coexistence
doi: 10.1103/PhysRevC.108.034310
2023ST05 Phys.Rev. C 108, 014316 (2023) K.Stoychev, M.Djongolov, V.Karayonchev, G.Rainovski, M.Ley, J.Jolie, D.Bittner, A.Blazhev, F.Dunkel, A.Esmaylzadeh, C.Fransen, J.Garbe, L.M.Gerhard, R.-B.Gerst, K.Geusen, K.A.Gladnishki, G.Hafner, D.Kalaydjieva, L.Klockner, L.Knafla, D.Kocheva, L.Kornwebel, C.Muller-Gatermann, E.Nikodem, J.-M.Regis, K.Schomacker, M.Stoyanova X-ray-γ fast-timing lifetime measurement of the 6+1 state in 206Po RADIOACTIVITY 206Po(IT)[from successive EC decay of 206Rn(EC)-206At(EC) produced in 194Pt(16O, 4n)206Rn, E=84 MeV]; measured X-rays, Eγ, Iγ, (X-rays)γ-coin, γγγ-coin. 206Po; deduced levels, J, π, T1/2 of the 4+ and 6+ excited states, B(E2). Lifetimes extracted via the generalized centroid difference (GCD) method. Systematics of the B(E2) for even-even Po isotopes with N<126. HORUS spectrometer consisting of 8 coaxial HPGe and 11 LaBr detectors at the FN-Tandem facility (Institute for Nuclear Physics, University of Cologne).
doi: 10.1103/PhysRevC.108.014316
2023WI06 Phys.Rev. C 108, L051305 (2023) J.Williams, G.Hackman, K.Starosta, R.S.Lubna, P.Choudhary, P.C.Srivastava, C.Andreoiu, D.Annen, H.Asch, M.D.H.K.G.Badanage, G.C.Ball, M.Beuschlein, H.Bidaman, V.Bildstein, R.Coleman, A.B.Garnsworthy, B.Greaves, G.Leckenby, V.Karayonchev, M.S.Martin, C.Natzke, C.M.Petrache, A.Radich, E.Raleigh-Smith, D.Rhodes, R.Russell, M.Satrazani, P.Spagnoletti, C.E.Svensson, D.Tam, F.Wu, D.Yates, Z.Yu Identifying the spin-trapped character of the 32Si isomeric state
doi: 10.1103/PhysRevC.108.L051305
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
2022ES05 Phys.Rev. C 106, 064323 (2022) A.Esmaylzadeh, A.Blazhev, K.Nomura, J.Jolie, M.Beckers, C.Fransen, R.-B.Gerst, A.Harter, V.Karayonchev, L.Knafla, M.Ley, F.von Spee Investigation of γ softness: Lifetime measurements in 104, 106Ru NUCLEAR REACTIONS 104Ru(18O, 18O), (18O, 16O), E=57 MeV; measured reaction products, Eγ, Iγ, (particle)γ-coin. 104,106Ru; deduced levels, J, π, T1/2 of low-lying excited states, B(E2), B(M1), shape invariants. Recoil-distance Doppler shift technique. Comparison to mapped-IBM calculation based on a microscopic energy density functional, to the values obtained with Wilets-Jean γ-soft model and to previous experimental data. Results indicate γ-softness and point on traixilaity in 104,106Ru. Cologne plunger device in conjunction with 11 HPGe detectors arranged in backward and forward rings combined with 6 PIN diodes for detecting the backscattered beam-like light recoiling fragments 10 MV FN-Tandem accelerator.
doi: 10.1103/PhysRevC.106.064323
2022HA24 Phys.Rev. C 106, 024326 (2022) A.Harter, L.Knafla, G.Friessner, G.Hafner, J.Jolie, A.Blazhev, A.Dewald, F.Dunkel, A.Esmaylzadeh, C.Fransen, V.Karayonchev, K.Lawless, M.Ley, J.-M.Regis, K.O.Zell Lifetime measurements in the tungsten isotopes 176, 178, 180W NUCLEAR REACTIONS 164Dy(16O, 4n)176W, E=80 MeV; 172Yb(9Be, 3n)178W, E=40 MeV; 181Ta(p, 2n)180W, E=16 MeV; measured E(ce), Eγ, (ce)γ-coin, (ce)γγ-coin, γγ-coin, level T1/2 by (ce)γ(t) fast-timing method, and by recoil-distance Doppler-shift method using Cologne iron-free Orange spectrometer for conversion electrons, Cologne HORUS spectrometer for γ radiation, and Cologne coincidence plunger setup at the 10 MV FN Tandem accelerator of IKP-Cologne. 176,178,180W; deduced levels, J, π, T1/2, B(E2) of yrast positive-parity states up to 10+ for 176W and up to 8+ for 178,180W. Comparison with previous available experimental results, and with IBM-1 model calculations. Experimental and theoretical (by IBM-1 model with SU(3) and X(5) limits) systematics of excitation energies, deformation parameter β, quadrupole moment, B(E2), E(first 4+)/E(first 2+), B(E2)(first 4+)/B(E2)(first 2+) for 168,170,172,174,176,178,180,182,184,186W.
doi: 10.1103/PhysRevC.106.024326
2022KA40 Phys.Rev. C 106, 044321 (2022) V.Karayonchev, A.Blazhev, J.Jolie, A.Dewald, A.Esmaylzadeh, C.Fransen, G.Hafner, L.Knafla, C.Muller-Gatermann, G.Rainovski, J.-M.Regis, K.Schomacker, P.Van Isacker New aspects of the low-energy structure of 211At NUCLEAR REACTIONS 209Bi(16O, 14C)211At, E=84 MeV; measured recoiling beam-like nuclei, Eγ, Iγ, (particle)γ-coin. 211At; deduced levels, J, π, high-spin states, T1/2 of the excited states, B(E2). Recoil-distance Doppler shift and the Doppler-shift attenuation methods. Comparison to two shell-model calculations, one using the Kuo-Herling residual interaction and the other using a single-j approximation for protons in the 0h9/2 orbital. Comparison to other experimental data. Cologne plunger device with 11 HPGe detectors positioned in two rings at FN-Tandem accelerator (University of Cologne).
doi: 10.1103/PhysRevC.106.044321
2022KA52 Phys.Rev. C 106, 064305 (2022) V.Karayonchev, G.Rainovski, J.Jolie, A.Blazhev, A.Dewald, A.Esmaylzadeh, C.Fransen, P.John, L.Knafla, D.Kocheva, K.Schomacker, V.Werner, H.Naidja Lifetime measurements in the yrast band of 212Po with a shell-model investigation NUCLEAR REACTIONS 208Pb(18O, 14C)212Po, E=85 MeV; measured reaction products, Eγ, Iγ, γγ-coin, (particle)γ-coin. 212Po; deduced levels, J, π, B(E2), T1/2 of first 4+ and 6+ states; calculated levels, J, π, B(E2). Lifetimes obtained with recoil-distance Doppler-shift (RDDS) method. Shell-model calculations performed using H208 and KHPE interaction. Cologne plunger device, array of 11 HPGe detectors and array of 6 photovoltaic pin-diodes at FN-TANDEM accelerator (University of Cologne).
doi: 10.1103/PhysRevC.106.064305
2022OL03 Phys.Rev. C 105, 054319 (2022) S.D.Olorunfunmi, R.Neveling, J.Carter, P.von Neumann-Cosel, I.T.Usman, P.Adsley, A.Bahini, L.P.L.Baloyi, J.W.Brummer, L.M.Donaldson, H.Jivan, N.Y.Kheswa, K.C.W.Li, D.J.Marin-Lambarri, P.T.Molema, C.S.Moodley, G.G.O'Neill, P.Papka, L.Pellegri, V.Pesudo, E.Sideras-Haddad, F.D.Smit, G.F.Steyn, A.A.Avaa, F.Diel, F.Dunkel, P.Jones, V.Karayonchev Evolution of the isoscalar giant monopole resonance in the Ca isotope chain NUCLEAR REACTIONS Ca, 42,44,48Ca(α, α'), E=196 MeV; measured Eα, Iα; deduced σ(θ), isoscalar giant monopole resonance strength distribution in the 9.5-25.5 MeV range, nucleus incompressibility KA. Analysis with difference-of-spectra (DoS) technique using measurements at 2 different angular covege settings of the spectrometer. Comparison to previous experimental results. K600 magnetic spectrometer at iThemba LABS.
doi: 10.1103/PhysRevC.105.054319
2021AR08 Phys.Lett. B 820, 136592 (2021) K.Arnswald, A.Blazhev, F.Nowacki, P.Petkov, P.Reiter, T.Braunroth, A.Dewald, M.Droste, C.Fransen, R.Hirsch, V.Karayonchev, L.Kaya, L.Lewandowski, C.Muller-Gatermann, M.Seidlitz, B.Siebeck, A.Vogt, D.Werner, K.O.Zell Enhanced quadrupole collectivity in doubly-magic 56Ni: Lifetime measurements of the 41+ and 61+ states NUCLEAR REACTIONS 27Al(32S, 2np)56Ni, E=78 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, level lifetimes, B(E2). Comparison with theoretical calculations.
doi: 10.1016/j.physletb.2021.136592
2021ES04 Phys.Rev. C 103, 054324 (2021) A.Esmaylzadeh, V.Karayonchev, G.Hafner, J.Jolie, M.Beckers, A.Blazhev, A.Dewald, C.Fransen, A.Goldkuhle, L.Knafla, C.Muller-Gatermann Triaxiality in the mid-shell nucleus 112Pd NUCLEAR REACTIONS 110Pd(18O, 16O)112Pd, E=56 MeV; measured Eγ, Iγ, (particle)γ-coin, half-lives of the 2+, 4+ and 6+ g.s. band members and 2+ level in γ band by recoil-distance Doppler shift (RDDS) and DDCM analysis methods using Cologne Plunger device and an array of 11 HPGe detectors at the Cologne FN Tandem accelerator facility. 112Pd; deduced levels, B(E2). Comparison with IBM-1 model calculations. NUCLEAR STRUCTURE 112Pd; calculated levels, J, π, B(E2) for 2+, 4+, 6+, 8+ and 10+ states of the yrast band and 2+, 3+, 4+, 5+, 6+, 7+ and 8+ states of the γ-band using the Interacting Boson Model (IBM-1), the Davydov Filipov Model and the Wilets-Jean gamma-unstable model (or γ-soft model); deduced rigid triaxial nucleus and indicators for a γ-soft nucleus.
doi: 10.1103/PhysRevC.103.054324
2021ES09 Phys.Rev. C 104, 064314 (2021) A.Esmaylzadeh, V.Karayonchev, K.Nomura, J.Jolie, M.Beckers, A.Blazhev, A.Dewald, C.Fransen, R.-B.Gerst, G.Hafner, A.Harter, L.Knafla, M.Ley, L.M.Robledo, R.Rodriguez-Guzman, M.Rudigier Lifetime measurements to investigate γ softness and shape coexistence in 102Mo NUCLEAR REACTIONS 100Mo(18O, 16O)102Mo, E=52 MeV; measured Eγ, Iγ, γγ-coin, T1/2 of levels by recoil-distance Doppler-shift method using an array of eleven HPGe detectors, and Cologne Plunger device at the Cologne FN Tandem accelerator facility. 102Mo; deduced levels, J, π, B(E2), B(M1), E0 transition probability; calculated deformation-energy surface in the (β, γ) plane. Comparison of levels and B(E2) with mapped interacting boson model (IBM) calculations, with microscopic input from Gogny mean-field. Systematics of 0+ and first 2+ states and B(E2) values in N=52-64, Sr, Zr, Mo and Ru isotopes. Discussed shape coexistence and γ-softness.
doi: 10.1103/PhysRevC.104.064314
2021HA23 Eur.Phys.J. A 57, 174 (2021) G.Hafner, A.Esmaylzadeh, J.Jolie, J.-M.Regis, C.Muller-Gatermann, A.Blazhev, C.Fransen, R.-B.Gerst, V.Karayonchev, L.Knafla, N.Saed-Samii, K.-O.Zell Lifetime measurements in 182Pt using γ-γ fast-timing NUCLEAR REACTIONS 170Yb(16O, 4n), E=87 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, half lives, B(E2). Comparison with theoretical calculations in the framework of the sd-IBM with and without configuration mixing, γ-γ fast-timing technique.
doi: 10.1140/epja/s10050-021-00492-x
2021KA19 Phys.Rev. C 103, 044309 (2021) V.Karayonchev, M.Stoyanova, G.Rainovski, J.Jolie, A.Blazhev, M.Djongolov, A.Esmaylzadeh, C.Fransen, K.Gladnishki, L.Knafla, D.Kocheva, L.Kornwebel, J.-M.Regis, G.De Gregorio, A.Gargano Lifetimes and structures of low-lying negative-parity states of 209Po RADIOACTIVITY 209At(EC), (β+)[from successive α and ϵ decay of 213Fr, produced in 206Pb(11B, 4n)213Fr, E=56 MeV at the FN-Tandem facility of University of Cologne]; measured Eγ, Iγ, γγ-coin, level half-lives by γγ(t) fast-timing method and analyzed by generalized centroid difference (GCD) method using eight HPGe detectors and 12 LaBr scintillators, with six of these placed inside BGO anti-Compton shields. 209Po; deduced levels, J, π, B(M1), B(E2). Comparison with shell-model calculation using a microscopic effective interaction derived from the realistic CD-Bonn potential. NUCLEAR STRUCTURE 209Po; calculated proton single-particle and neutron single-hole energies, levels, J, π, B(M1), B(E2), magnetic dipole and electric quadrupole moments, orbital composition and one-neutron pick-up spectroscopic factors of selected states, E2 matrix elements. Shell-model calculations with a realistic effective interaction derived from the CD-Bonn nucleon-nucleon potential within the framework of Q-box folded-diagram approach. Comparison with experimental data.
doi: 10.1103/PhysRevC.103.044309
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
2020CA03 Phys.Rev. C 101, 024313 (2020) R.L.Canavan, M.Rudigier, P.H.Regan, M.Lebois, J.N.Wilson, N.Jovancevic, P.-A.Soderstrom, S.M.Collins, D.Thisse, J.Benito, S.Bottoni, M.Brunet, N.Cieplicka-Orynczak, S.Courtin, D.T.Doherty, L.M.Fraile, K.Hadynska-Klek, G.Hafner, M.Heine, L.W.Iskra, V.Karayonchev, A.Kennington, P.Koseoglou, G.Lotay, G.Lorusso, M.Nakhostin, C.R.Nita, S.Oberstedt, Zs.Podolyak, L.Qi, J.-M.Regis, V.Sanchez-Tembleque, R.Shearman, V.Vedia, W.Witt Half-life measurements in 164, 166Dy using γ-γ fast-timing spectroscopy with the ν-Ball spectrometer NUCLEAR REACTIONS 164Dy(18O, 18O'), E=71, 76, 80 MeV pulsed beam; 164Dy(18O, 16O)166Dy, E=78 MeV; measured Eγ, Iγ, level half-lives by γγ(t) fast-timing triple coincidence method using ν-Ball with 24 HPGe clover detectors, ten coaxial HPGe detectors, and 20 LaBr3 detectors. 164,166Dy; deduced levels, J, π, B(E2), β2 and transition quadrupole moments. Comparison with values for 164Dy in the ENSDF database at NNDC.
doi: 10.1103/PhysRevC.101.024313
2020KA63 Phys.Rev. C 102, 064314 (2020) V.Karayonchev, J.Jolie, A.Blazhev, A.Dewald, A.Esmaylzadeh, C.Fransen, G.Hafner, L.Knafla, J.Litzinger, C.Muller-Gatermann, J.-M.Regis, K.Schomacker, A.Vogt, N.Warr, A.Leviatan, N.Gavrielov Tests of collectivity in 98Zr by absolute transition rates NUCLEAR REACTIONS 96Zr(18O, 16O)98Zr, E=50 MeV; measured recoiling light fragments using an array of six solar cells, Eγ, Iγ, (particle)γ-coin, level half-lives by Doppler-shift recoil-distance (RDDS) method and analysis by differential decay curve method (DDCM) using an array of 11 HPGe detectors and Cologne Plunger device at the Cologne 10 MV FN Tandem accelerator. 98Zr; deduced levels, J, π, B(E2). Comparison with Monte Carlo shell model (MCSM), and interacting boson model with configuration mixing (IBM-CM) calculations, and with previous experimental data. Systematics of energies and B(E2) values of the first 2+ states in 90,92,94,96,98,100Sr, 92,94,96,98,100,102,104,106Zr.
doi: 10.1103/PhysRevC.102.064314
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
2020KN03 Phys.Rev. C 102, 044310 (2020) L.Knafla, G.Hafner, J.Jolie, J.-M.Regis, V.Karayonchev, A.Blazhev, A.Esmaylzadeh, C.Fransen, A.Goldkuhle, S.Herb, C.Muller-Gatermann, N.Warr, K.O.Zell Lifetime measurements of 162Er: Evolution of collectivity in the rare-earth region NUCLEAR REACTIONS 154Sm(12C, 4n)162Er, E=62 MeV; measured Eγ, Iγ, γγ-coin, half-life of 7(-) isomer by γ(t), level half-lives by γγ(t) fast-timing technique using the HORUS spectrometer with eight HPGe detectors and eight LaBr3(Ce) scintillation detectors at the 10 MV FN-Tandem accelerator of the University of Cologne. 162Er; deduced levels, J, π, B(E2). Comparison with confined β soft model and the interacting boson model calculations. Systematics of B(E2) values transition quadrupole moments and β2 deformation parameters for 158,160,162,164,166,168,170Er.
doi: 10.1103/PhysRevC.102.044310
2020KN04 Phys.Rev. C 102, 054322 (2020) L.Knafla, P.Alexa, U.Koster, G.Thiamova, J.-M.Regis, J.Jolie, A.Blanc, A.M.Bruce, A.Esmaylzadeh, L.M.Fraile, G.de France, G.Hafner, S.Ilieva, M.Jentschel, V.Karayonchev, W.Korten, T.Kroll, S.Lalkovski, S.Leoni, H.Mach, N.Marginean, P.Mutti, G.Pascovici, V.Paziy, Zs.Podolyak, P.H.Regan, O.J.Roberts, N.Saed-Samii, G.S.Simpson, J.F.Smith, T.Soldner, C.Townsley, C.A.Ur, W.Urban, A.Vancraeyenest, N.Warr Lifetime measurements in the odd-A nucleus 177Hf RADIOACTIVITY 177mLu(β-)[from thermal neutron activation of Lu(NO3)3 at the FRM2 reactor in Garching]; measured Eγ, Iγ, γγ-coin, half-lives of levels in 177Hf by γγ(t) and generalized-centroid-difference (GCD) method using EXILL-FATIMA array of eight HPGe-Clover detectors and 16 fast-timing LaBr3(Ce) detectors at ILL-Grenoble. 177Hf; deduced levels, J, π, B(M1), B(E2), B(E1), configurations. Comparison to particle-rotor-model (PRM), and quasiparticle-phonon-model (QPM) calculations with multipole-multipole interactions. 176Hf; calculated microscopic structure of the lowest 2-qp vibrational states.
doi: 10.1103/PhysRevC.102.054322
2020RU01 Phys.Lett. B 801, 135140 (2020) M.Rudigier, P.M.Walker, R.L.Canavan, Zs.Podolyak, P.H.Regan, P.-A.Soderstrom, M.Lebois, J.N.Wilson, N.Jovancevic, A.Blazhev, J.Benito, S.Bottoni, M.Brunet, N.Cieplicka-Orynczak, S.Courtin, D.T.Doherty, L.M.Fraile, K.Hadynska-Klek, M.Heine, L.W.Iskra, J.Jolie, V.Karayonchev, A.Kennington, P.Koseoglou, G.Lotay, G.Lorusso, M.Nakhostin, C.R.Nita, S.Oberstedt, L.Qi, J.-M.Regis, V.Sanchez-Tembleque, R.Shearman, W.Witt, V.Vedia, K.O.Zell Multi-quasiparticle sub-nanosecond isomers in 178W NUCLEAR REACTIONS 164Dy(18O, 4n), E71, 76, 80 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, J, π, isomeric T1/2. Fast-timing techniques.
doi: 10.1016/j.physletb.2019.135140
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
2019ES04 Phys.Rev. C 100, 064309 (2019) A.Esmaylzadeh, J.-M.Regis, Y.H.Kim, U.Koster, J.Jolie, V.Karayonchev, L.Knafla, K.Nomura, L.M.Robledo, R.Rodriguez-Guzman Lifetime measurements and shape coexistence in 97Sr NUCLEAR REACTIONS 235U(n, F), E=thermal neutrons from high-flux reactor of ILL-Grenoble; measured fission products using Lohengrin spectrometer, Eγ, Iγ, level half-lives by (fragment)γγ(t) fast-timing technique using LaBr detectors for γ detection and ionization chamber for fission fragments. 97Sr; deduced levels, isomer, J, π, B(M1), B(E2). Comparison with previous experimental results, and with interacting boson-fermion model calculation based on microscopic energy density functional.
doi: 10.1103/PhysRevC.100.064309
2019KA13 Phys.Rev. C 99, 024326 (2019) V.Karayonchev, A.Blazhev, A.Esmaylzadeh, J.Jolie, M.Dannhoff, F.Diel, F.Dunkel, C.Fransen, L.M.Gerhard, R.-B.Gerst, L.Knafla, L.Kornwebel, C.Muller-Gatermann, J.-M.Regis, N.Warr, K.O.Zell, M.Stoyanova, P.Van Isacker Lifetimes in 211At and their implications for the nuclear structure above 208Pb NUCLEAR REACTIONS 208Pb(6Li, 3n), E=34 MeV; measured Eγ, Iγ, γγ-coin, half-lives of 13/2-, 17/2- and 23/2- levels in 211At by γγ-coin fast timing technique using HPGe detectors and LaBr3(Ce) scintillators for γ-rays at the Institute for Nuclear Physics, University of Cologne. 211At; deduced levels, B(M1), B(E2). Comparison with shell model calculations, and previous experimental values. NUCLEAR STRUCTURE 209Bi, 210Po, 211At; calculated B(E2), magnetic dipole moments, B(M1) using two shell-model calculations: semiempirical interaction for three particles in a single j=9/2 shell, and the modified Kuo-Herling interaction in a multi-j model space. Comparison with experimental values.
doi: 10.1103/PhysRevC.99.024326
2019KA36 Phys.Rev. C 100, 024323 (2019) L.Kaya, A.Vogt, P.Reiter, M.Siciliano, N.Shimizu, Y.Utsuno, H.-K.Wang, A.Gargano, L.Coraggio, N.Itaco, K.Arnswald, D.Bazzacco, B.Birkenbach, A.Blazhev, A.Bracco, B.Bruyneel, L.Corradi, F.C.L.Crespi, G.de Angelis, M.Droste, J.Eberth, A.Esmaylzadeh, E.Farnea, E.Fioretto, C.Fransen, A.Gadea, A.Giaz, A.Gorgen, A.Gottardo, K.Hadynska-Klek, H.Hess, R.Hirsch, P.R.John, J.Jolie, A.Jungclaus, V.Karayonchev, L.Kornwebel, W.Korten, S.Leoni, L.Lewandowski, S.Lunardi, R.Menegazzo, D.Mengoni, C.Michelagnoli, T.Mijatovic, G.Montagnoli, D.Montanari, C.Muller-Gatermann, D.Napoli, Zs.Podolyak, G.Pollarolo, F.Recchia, J.-M.Regis, N.Saed-Samii, E.Sahin, F.Scarlassara, K.Schomacker, M.Seidlitz, B.Siebeck, P.-A.Soderstrom, A.M.Stefanini, O.Stezowski, S.Szilner, B.Szpak, E.Teruya, C.Ur, J.J.Valiente-Dobon, K.Wolf, K.Yanase, N.Yoshinaga, K.O.Zell Isomer spectroscopy in 133Ba and high-spin structure of 134Ba NUCLEAR REACTIONS 124Sn(13C, X)133Ba/134Ba, E=55 MeV from FN tandem accelerator at Cologne; 208Pb(136Xe, X)134Ba, E=6.84 MeV/nucleon from PIAVE+ALPI accelerator complex at LNL-Legnaro; measured Eγ, Iγ, γγ-coin, γγ(θ), half-lives of isomers by γγ(t) using eight HPGe and 12 LaBr3(ce) detectors at Cologne, and magnetic spectrometer PRISMA with AGATA array at Legnaro. 133,134Ba; deduced high-spin levels, isomers, J, π, multipolarities, alignments, bands, backbending, configurations, B(E1), B(E2). Comparison with shell-model calculations for 134Ba, and with previous experimental results. Systematics of positive- and negative-parity yrast states in N=78 nuclei: 130Te, 132Xe, 134Ba, 136Ce, 138Nd, 140Sm, 142Gd, and Z=56 nuclei: 126,128,130,132,134,136,138Ba. NUCLEAR STRUCTURE 134Ba; calculated levels, J, π using GCN50:82, SN100PN, SNV, PQM130, and realistic SM interactions. Comparison with experimental data.
doi: 10.1103/PhysRevC.100.024323
2019PE06 Phys.Rev. C 99, 024303 (2019) C.M.Petrache, J.-M.Regis, C.Andreoiu, M.Spieker, C.Michelagnoli, P.E.Garrett, A.Astier, E.Dupont, F.Garcia, S.Guo, G.Hafner, J.Jolie, F.Kandzia, V.Karayonchev, Y.-H.Kim, L.Knafla, U.Koster, B.F.Lv, N.Marginean, C.Mihai, P.Mutti, K.Ortner, C.Porzio, S.Prill, N.Saed-Samii, W.Urban, J.R.Vanhoy, K.Whitmore, J.Wisniewski, S.W.Yates Collectivity of the 2p-2h proton intruder band of 116Sn NUCLEAR REACTIONS 115Sn(n, γ), E=thermal; measured Eγ, Iγ, γγ-coin, half-lives of levels using γγ-coin fast timing technique at ILL-Grenoble. 116Sn; deduced levels, J, π, B(E2) values of states in the normal and intruder configurations. Comparison with previous measurements, and with theoretical predictions using IBM-2. Systematics of levels, J, π and half-lives in 110,112,114,116,118,120,122Sn.
doi: 10.1103/PhysRevC.99.024303
2019RU06 Acta Phys.Pol. B50, 661 (2019) M.Rudigier, R.L.Canavan, P.H.Regan, P.-A.Soderstrom, M.Lebois, J.N.Wilson, N.Jovancevic, S.Bottoni, M.Brunet, N.Cieplicka-Orynczak, S.Courtin, D.T.Doherty, K.Hadynska-Klek, M.Heine, L.W.Iskra, V.Karayonchev, A.Kennington, P.Koseoglou, G.Lotay, G.Lorusso, M.Nakhostin, C.R.Nita, S.Oberstedt, Zs.Podolyak, L.Qi, J.-M.Regis, R.Shearman, P.M.Walker, W.Witt Isomer Spectroscopy and Sub-nanosecond Half-live Determination in 178W Using the NuBALL Array NUCLEAR REACTIONS 164Dy(18O, 4n), E=71, 76, 80 MeV; measured reaction products, Eγ, Iγ, γγ-coin; deduced γ-ray energies, J, π, isomeric T1/2, B(E2), intrinsic quadrupole moments. Centroid-shift method. NuBALL array of 24Compton suppressed HPGe Clover detectors, 10 Compton suppressed coaxial HPGe detectors and 20 LaBr3(Ce) scintillators.
doi: 10.5506/aphyspolb.50.661
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
2018ES04 Phys.Rev. C 98, 014313 (2018) A.Esmaylzadeh, L.M.Gerhard, V.Karayonchev, J.-M.Regis, J.Jolie, M.Bast, A.Blazhev, T.Braunroth, M.Dannhoff, F.Dunkel, C.Fransen, G.Hafner, L.Knafla, M.Ley, C.Muller-Gatermann, K.Schomacker, N.Warr, K.-O.Zell Lifetime determination in 190, 192, 194, 196Hg via γ-γ fast-timing spectroscopy NUCLEAR REACTIONS 178Hf(16O, 4n)190Hg, E=87 MeV; 184W(12C, 4n)192Hg, E=66 MeV; 186W(12C, 4n)194Hg, E=64 MeV; 197Au(p, 2n)196Hg, E=17 MeV; measured Eγ, Iγ, level half-lives of first 2+ and 4+ states in 190,192,194,196Hg, first 7- in 192Hg, first 9- in 194Hg and first 5- in 196Hg by γγ-coin fast-timing technique using HORUS array and LaBr3(Ce) detectors at the Cologne University Institute of Nuclear Physics 190,192,194,196Hg; deduced levels, J, π, B(E2), B(E1). Comparison with theoretical calculations using interacting boson model configuration mixing (IBM-CM), and interacting boson model-2 (IBM-2). Systematics of excitation energies of yrast states, E(first 4+)/E(first 2+) ratios, and B(E2) for first 2+ and 4+ states in A=172-204 Hg isotopes.
doi: 10.1103/PhysRevC.98.014313
2017KA10 Phys.Rev. C 95, 034316 (2017) V.Karayonchev, J.-M.Regis, J.Jolie, A.Blazhev, R.Altenkirch, S.Ansari, M.Dannhoff, F.Diel, A.Esmaylzadeh, C.Fransen, R.-B.Gerst, K.Moschner, C.Muller-Gatermann, N.Saed-Samii, S.Stegemann, N.Warr, K.O.Zell Evolution of collectivity in the N=100 isotones near 170Yb NUCLEAR REACTIONS 168Er(α, 2n), E=27 MeV; measured Eγ, Iγ, level half-lives by γγ(t) using electronic γ-γ fast-timing technique using HPGe detectors and LaBr3(Ce) detectors at Cologne 10 MV FN-Tandem accelerator. 170Yb; deduced levels, yrast band, B(E2). Comparison with confined beta soft (CBS) model calculations, X(5) predictions, and with previous experimental results. Systematics of ground state band energies and B(E2) in N=100 isotones of 168Er, 170Yb, 172Hf, 174W and 176Os.
doi: 10.1103/PhysRevC.95.034316
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
2017LI06 J.Phys.(London) G44, 054002 (2017) R.Lica, G.Benzoni, A.I.Morales, M.J.G.Borge, L.M.Fraile, H.Mach, M.Madurga, C.Sotty, V.Vedia, H.De Witte, J.Benito, T.Berry, N.Blasi, A.Bracco, F.Camera, S.Ceruti, V.Charviakova, N.Cieplicka-Orynczak, C.Costache, F.C.L.Crespi, J.Creswell, G.Fernandez-Martinez, H.Fynbo, P.Greenlees, I.Homm, M.Huyse, J.Jolie, V.Karayonchev, U.Koster, J.Konki, T.Kroll, J.Kurcewicz, T.Kurtukian-Nieto, I.Lazarus, S.Leoni, M.Lund, N.Marginean, R.Marginean, C.Mihai, R.Mihai, A.Negret, A.Orduz, Z.Patyk, S.Pascu, V.Pucknell, P.Rahkila, J.M.Regis, F.Rotaru, N.Saed-Samii, V.Sanchez-Tembleque, M.Stanoiu, O.Tengblad, M.Thuerauf, A.Turturica, P.Van Duppen, N.Warr β decay studies of n-rich Cs isotopes with the ISOLDE Decay Station RADIOACTIVITY 148,149,150Cs(β-), (β-n)[from U(p, X), E=1.4 GeV at ISOLDE-CERN]; measured reaction products, Eγ, Iγ, βγ-, γγ-coin, half-lives of ground states of 148,149,150Cs, %Pn for the decay of 149Cs, half-lives of levels in 149Ba and 148Ce by βγγ(t). 149Ba; deduced levels, β feedings, multipolarities, half-lives. 148Ce; deduced half-life of the first 2+ state. Comparison with previous experimental half-lives, and with theoretical calculations.
doi: 10.1088/1361-6471/aa6015
2017QU05 Phys.Rev. C 96, 044313 (2017) M.Queiser, A.Vogt, M.Seidlitz, P.Reiter, T.Togashi, N.Shimizu, Y.Utsuno, T.Otsuka, M.Honma, P.Petkov, K.Arnswald, R.Altenkirch, B.Birkenbach, A.Blazhev, T.Braunroth, A.Dewald, J.Eberth, C.Fransen, B.Fu, H.Hess, R.Hetzenegger, R.Hirsch, J.Jolie, V.Karayonchev, L.Kaya, L.Lewandowski, C.Muller-Gatermann, J.-M.Regis, D.Rosiak, D.Schneiders, B.Siebeck, T.Steinbach, K.Wolf, K.-O.Zell Cross-shell excitations from the fp shell: Lifetime measurements in 61Zn NUCLEAR REACTIONS 40Ca(24Mg, n2p), E=77 MeV; 58Ni(α, n), E=19 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ), level half-lives by recoil-distance Doppler-shift (RDDS) method using Cologne plunger device and an array of 12 HPGe detectors, and by γγ(t) electronic fast timing technique using eight HPGe detectors and eight LaBr3:Ce detectors at the Tandem accelerator facility of the University of Cologne. 61Zn; deduced high-spin levels, nano-second isomers, J, π, multipolarities, mixing ratios, B(E2), B(E1), B(M1), B(M2), configurations, deformation. Comparison with shell-model calculations using jj44b, GXPF1, GXPF1A, and GXPF1Br+VMU interactions.
doi: 10.1103/PhysRevC.96.044313
2017VO06 Phys.Rev. C 96, 024321 (2017) A.Vogt, M.Siciliano, B.Birkenbach, P.Reiter, K.Hadynska-Klek, C.Wheldon, J.J.Valiente-Dobon, E.Teruya, N.Yoshinaga, K.Arnswald, D.Bazzacco, A.Blazhev, A.Bracco, B.Bruyneel, R.S.Chakrawarthy, R.Chapman, D.Cline, L.Corradi, F.C.L.Crespi, M.Cromaz, G.de Angelis, J.Eberth, P.Fallon, E.Farnea, E.Fioretto, C.Fransen, S.J.Freeman, B.Fu, A.Gadea, W.Gelletly, A.Giaz, A.Gorgen, A.Gottardo, A.B.Hayes, H.Hess, R.Hetzenegger, R.Hirsch, H.Hua, P.R.John, J.Jolie, A.Jungclaus, V.Karayonchev, L.Kaya, W.Korten, I.Y.Lee, S.Leoni, X.Liang, S.Lunardi, A.O.Macchiavelli, R.Menegazzo, D.Mengoni, C.Michelagnoli, T.Mijatovic, G.Montagnoli, D.Montanari, C.Muller-Gatermann, D.Napoli, C.J.Pearson, Zs.Podolyak, G.Pollarolo, A.Pullia, M.Queiser, F.Recchia, P.H.Regan, J.-M.Regis, N.Saed-Samii, E.Sahin, F.Scarlassara, M.Seidlitz, B.Siebeck, G.Sletten, J.F.Smith, P.-A.Soderstrom, A.M.Stefanini, O.Stezowski, S.Szilner, B.Szpak, R.Teng, C.Ur, D.D.Warner, K.Wolf, C.Y.Wu, K.O.Zell High-spin structures in 132Xe and 133Xe and evidence for isomers along the N=79 isotones NUCLEAR REACTIONS 208Pb(136Xe, X)132Xe/133Xe, E=6.84 MeV/nucleon from the PIAVE+ALPI accelerator complex at LNL-Legnaro; 198Pt(136Xe, X)132Xe/133Xe, E=6.25 MeV/nucleon from the LBNL cyclotron facility; 130Te(α, nγ), (α, 2nγ), E=19 MeV from Cologne FN Tandem accelerator; measured Eγ, Iγ, γγ-, (particle)γ-coin using Advanced GAmma Tracking Array (AGATA) in a demonstrator configuration, and magnetic spectrometer PRISMA for particle identification, (particle)γ-coin using Gammasphere array and CHICO gas-detector array, γγ(θ) using HORUS array at Cologne. 132,133Xe; deduced high-spin levels, J, π, half-life of a micro-sec isomer in 133Xe with Jπ=(23/2+), multipolarities, mixing ratios. Comparison with shell-model calculations using PQM130 and SN100PN interactions. Systematics of level energies in N=78 and 79 isotones from Z=50 to 64, and even-A A=120-136 Xe isotopes.
doi: 10.1103/PhysRevC.96.024321
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
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