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NSR database version of May 19, 2024.

Search: Author = N.Saed-Samii

Found 22 matches.

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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
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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
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2020KO03      Phys.Rev. C 101, 014303 (2020)

P.Koseoglou, V.Werner, N.Pietralla, S.Ilieva, T.Niksic, D.Vretenar, P.Alexa, M.Thurauf, C.Bernards, A.Blanc, A.M.Bruce, R.B.Cakirli, N.Cooper, L.M.Fraile, G.de France, M.Jentschel, J.Jolie, U.Koster, W.Korten, T.Kroll, S.Lalkovski, H.Mach, N.Marginean, P.Mutti, Z.Patel, V.Paziy, Zs.Podolyak, P.H.Regan, J.-M.Regis, O.J.Roberts, N.Saed-Samii, G.S.Simpson, T.Soldner, C.A.Ur, W.Urban, D.Wilmsen, E.Wilson

Low-Z boundary of the N=88-0 shape phase transition: 148Ce near the critical point

NUCLEAR REACTIONS 235U(n, Fγ), E=cold neutrons from PF1B, ILL-Grenoble facility; measured Eγ, γγ-coin, half-lives of the first 2+ and 4+ levels in 148Ce by fast-timing technique using the EXILL-FATIMA array of eight EXOGAM clovers and 16 LaBr3(Ce) scintillators. 148Ce; deduced levels, B(E2) for the first 2+ 4+ states. Comparison with predictions of vibrator, rigid rotor, X(5) and X(5)-β8 models, and with previous experimental results. Systematics of E(first 4+)/E(first 2+) and energies of the yrast states for N=90 isotones 146Ba, 148Ce, 150Nd, 152Sm, 154Gd, 156Dy.

NUCLEAR STRUCTURE 144,146,148Ce, 146,148,150Nd, 148,150,152,154Sm; calculated quantum shape phase transition (QSPT) lines in the IBM symmetry triangle using IBM-1 model. 148Ce; calculated self-consistent triaxial quadrupole constrained energy surfaces and probability distributions in in the β-γ plane using Axial Skyrme-Hartree-Fock-Bogoliubov model.

doi: 10.1103/PhysRevC.101.014303
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2019KA04      Phys.Rev. C 99, 014301 (2019)

L.Kaya, A.Vogt, P.Reiter, C.Muller-Gatermann, A.Gargano, L.Coraggio, N.Itaco, A.Blazhev, K.Arnswald, D.Bazzacco, B.Birkenbach, A.Bracco, B.Bruyneel, L.Corradi, F.C.L.Crespi, G.de Angelis, M.Droste, J.Eberth, E.Farnea, E.Fioretto, C.Fransen, A.Gadea, A.Giaz, A.Gorgen, A.Gottardo, K.Hadynska-Klek, H.Hess, R.Hetzenegger, R.Hirsch, P.R.John, J.Jolie, A.Jungclaus, W.Korten, S.Leoni, L.Lewandowski, S.Lunardi, R.Menegazzo, D.Mengoni, C.Michelagnoli, T.Mijatovic, G.Montagnoli, D.Montanari, D.Napoli, Zs.Podolyak, G.Pollarolo, F.Recchia, D.Rosiak, N.Saed-Samii, E.Sahin, M.Siciliano, F.Scarlassara, M.Seidlitz, P.-A.Soderstrom, A.M.Stefanini, O.Stezowski, S.Szilner, B.Szpak, C.Ur, J.J.Valiente-Dobon, M.Weinert, K.Wolf, K.O.Zell

Identification of high-spin proton configurations in 136Ba and 137Ba

NUCLEAR REACTIONS 238U(136Xe, 136Ba), E=6.84 MeV/nucleon; measured Eγ, Iγ, charged particles, and (charged particles)γ- and γγ-coin using the AGATA array for γ detection and the PRISMA spectrometer for charged particles at PIAVE+ALPI accelerator complex of INFN-LNL-Legnaro. 130Te(9Be, X)136Ba, E=40, 43 MeV; 130Te(11B, X)136Ba/137Ba, E not given; measured Eγ, Iγ, γγ-coin, γγ(θ) using 11 HPGe detectors and HORUS array of 14 HPGe detectors at the FN Tandem accelerator of University of Cologne. 136,137Ba; deduced high-spin levels, J, π, multipolarities, mixing ratios. Comparison with shell model predictions using GCN50:82, PQM130, realistic SM and SN100PN interactions. Systematics of high-spin levels in 134,135Xe, 136,137Ba, 138,139Ce, 140Nd.

NUCLEAR STRUCTURE 136,137Ba; calculated levels, J, π, wave functions, neutron occupation numbers using shell model with several interactions. Comparison with experimental data. 134Xe, 136Ba, 138Ce; calculated average neutron occupation numbers of the gdsh model space for observed high-spin states using the GCN50:82 and SN100PN interactions. 134Xe, 136Ba; calculated decomposition of the total angular momentum of selected states.

doi: 10.1103/PhysRevC.99.014301
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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
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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
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2019SP03      Phys.Rev. C 100, 014311 (2019)

P.Spagnoletti, G.Simpson, S.Kisyov, D.Bucurescu, J.-M.Regis, N.Saed-Samii, A.Blanc, M.Jentschel, U.Koster, P.Mutti, T.Soldner, G.de France, C.A.Ur, W.Urban, A.M.Bruce, C.Bernards, F.Drouet, L.M.Fraile, L.P.Gaffney, D.G.Ghita, S.Ilieva, J.Jolie, W.Korten, T.Kroll, S.Lalkovski, C.Larijarni, R.Lica, H.Mach, N.Marginean, V.Paziy, Zs.Podolyak, P.H.Regan, M.Scheck, J.F.Smith, G.Thiamova, C.Townsley, A.Vancraeyenest, V.Vedia, N.Warr, V.Werner, M.Zielinska

Lifetimes and shape-coexisting states of 99Zr

NUCLEAR REACTIONS 235U(n, F), E=cold neutrons from high-flux reactor of the Institut Laue-Langevin; measured Eγ, Iγ, level half-lives by γγ(t) using EXILL-FATIMA Ge and LaBr3(Ce) detector array for fast-timing technique. 99Zr; deduced levels, J, π, B(E2), B(M1), Q(transition), β2, configuration, kinematic moment of inertia for ν3/2[451] band. Systematics of kinematic moments of inertia of ν3/2[411] bands in 99,101,103Zr, 97Sr. Comparison with theoretical calculations using IBFM-1 model, and with previous experimental results.

doi: 10.1103/PhysRevC.100.014311
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2018KA27      Phys.Rev. C 98, 014309 (2018)

L.Kaya, A.Vogt, P.Reiter, M.Siciliano, B.Birkenbach, A.Blazhev, L.Coraggio, E.Teruya, N.Yoshinaga, K.Higashiyama, K.Arnswald, D.Bazzacco, A.Bracco, B.Bruyneel, L.Corradi, F.C.L.Crespi, G.de Angelis, J.Eberth, E.Farnea, E.Fioretto, C.Fransen, B.Fu, A.Gadea, A.Gargano, A.Giaz, A.Gorgen, A.Gottardo, K.Hadynska-Klek, H.Hess, R.Hetzenegger, R.Hirsch, N.Itaco, P.R.John, J.Jolie, A.Jungclaus, 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, A.Pullia, M.Queiser, F.Recchia, D.Rosiak, N.Saed-Samii, E.Sahin, F.Scarlassara, D.Schneiders, M.Seidlitz, B.Siebeck, J.F.Smith, P.-A.Soderstrom, A.M.Stefanini, T.Steinbach, O.Stezowski, S.Szilner, B.Szpak, C.Ur, J.J.Valiente-Dobon, K.Wolf, K.O.Zell

High-spin structure in the transitional nucleus 131Xe: Competitive neutron and proton alignment in the vicinity of the N=82 shell closure

NUCLEAR REACTIONS 208Pb(136Xe, X), E=6.84 MeV/nucleon; 238U(136Xe, X), E=7.35 MeV/nucleon; measured projectile-like reaction fragments using PRISMA magnetic spectrometer, Eγ, Iγ, γγ- and (131Xe)γ-coin using AGATA demonstrator array for γ detection at LNL-Legnaro. 124Sn(11B, 3np), E=54 MeV; measured Eγ, Iγ, γγ and pγ-coin, γγ(θ) using HORUS array at Cologne for γ detection and annular double-sided silicon strip detector (DSSSD) for particles. 131Xe; deduced levels, J, π, high-spin states. Comparison with shell-model calculations using several different interactions; discussed systematics of high-spin states in Z=54 nuclei of 123,125,127,129,131Xe, and N=77 nuclei of 127Sn, 129Te131Xe, 133Ba, 135Ce, 137Nd, 139Sm, 141Gd; compiled experimental total aligned angular momentum versus rotational frequency plots for yrast bands in A=117-132 Xe isotopes.

NUCLEAR STRUCTURE 131Xe; calculated levels, J, π, contribution of proton and neutron configurations for selected states, proton and neutron occupation numbers in h11/2 orbital, total aligned angular momenta as function of rotational frequency, and B(E2) using shell-model calculations with PQM130, SN100PN, GCN50:82, realistic SM, and SN100-KTH interactions. 129Xe; calculated proton and neutron occupation numbers in h11/2 orbital, total aligned angular momenta as function rotational frequency using shell model. Comparison with experimental data.

doi: 10.1103/PhysRevC.98.014309
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2018KA47      Phys.Rev. C 98, 054312 (2018)

L.Kaya, A.Vogt, P.Reiter, C.Muller-Gatermann, M.Siciliano, L.Coraggio, N.Itaco, A.Gargano, 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, E.Farnea, E.Fioretto, C.Fransen, A.Gadea, A.Giaz, A.Gorgen, A.Gottardo, K.Hadynska-Klek, H.Hess, R.Hetzenegger, R.Hirsch, P.R.John, J.Jolie, A.Jungclaus, W.Korten, S.Leoni, L.Lewandowski, S.Lunardi, R.Menegazzo, D.Mengoni, C.Michelagnoli, T.Mijatovic, G.Montagnoli, D.Montanari, D.Napoli, Zs.Podolyak, G.Pollarolo, F.Recchia, D.Rosiak, N.Saed-Samii, E.Sahin, F.Scarlassara, M.Seidlitz, P.-A.Soderstrom, A.M.Stefanini, O.Stezowski, S.Szilner, B.Szpak, C.Ur, J.J.Valiente-Dobon, M.Weinert, K.Wolf, K.O.Zell

Millisecond 23/2+ isomers in the N=79 isotones 133Xe and 135Ba

NUCLEAR REACTIONS 208Pb(136Xe, X)135Ba/133Xe/132Xe/136Ba, E=6.84 MeV/nucleon; measured Eγ, Iγ, γγ-coin, (particle)γ-coin using the Advanced GAmma Tracking Array (AGATA) for γ detection and the PRISMA magnetic spectrometer for particle identification at the PIAVE+ALPI accelerator complex of LNL-Legnaro. 130Te(9Be, X)132Xe/133Xe/135Ba/136Ba, E=40 MeV; measured Eγ, Iγ, γγ-coin, off-beam γγ(θ), half-lives of isomers using the HORUS array for γ detection at the FN tandem accelerator of the University of Cologne. 132,133Xe, 135,136Ba; deduced high-spin levels, isomers, J, π, total conversion coefficients, multipolarities, mixing ratios, configurations, B(M2), B(E3). 214Po; deduced mixing ratio for a transition from γγ(θ) measurement. Comparison with previous experimental data, and with large-scale shell model calculations using the SM, GCN50:82, SN100PN and SN100-KTH interactions. Systematics of levels, J, π, transition probabilities and isomers in N=79 isotones of 129Sn, 131Te, 133Xe, 135Ba, 137Ce, 139Nd, 141Sm, 143Gd.

NUCLEAR STRUCTURE 133Xe, 135Ba; calculated levels, J, π, configurations using large-scale shell model with SM, GCN50:82, SN100PN and SN100-KTH interactions. Comparison with experimental data.

doi: 10.1103/PhysRevC.98.054312
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2017AN15      Phys.Rev. C 96, 054323 (2017)

S.Ansari, J.-M.Regis, J.Jolie, N.Saed-Samii, N.Warr, W.Korten, M.Zielinska, M.-D.Salsac, A.Blanc, M.Jentschel, U.Koster, P.Mutti, T.Soldner, G.S.Simpson, F.Drouet, A.Vancraeyenest, G.de France, E.Clement, O.Stezowski, C.A.Ur, W.Urban, P.H.Regan, Zs.Podolyak, C.Larijani, C.Townsley, R.Carroll, E.Wilson, H.Mach, L.M.Fraile, V.Paziy, B.Olaizola, V.Vedia, A.M.Bruce, O.J.Roberts, J.F.Smith, M.Scheck, T.Kroll, A.-L.Hartig, A.Ignatov, S.Ilieva, S.Lalkovski, N.Marginean, T.Otsuka, N.Shimizu, T.Togashi, Y.Tsunoda

Experimental study of the lifetime and phase transition in neutron-rich 98, 100, 102Zr

NUCLEAR REACTIONS 235U(n, F), 241Pu(n, F), E=cold neutrons beam from PF1B, Institut Laue-Langevin (ILL), Grenoble; measured Eγ, γγ-coin, half-lives of the first 2+, 4+ and 6+ levels by fast-timing technique using the EXILL-FATIMA array consisting of eight EXOGAM clovers and 16 LaBr3(Ce) scintillators; fast-timing coincidence events analyzed using method of mirror symmetric centroid difference (MSCD) and generalized centroid difference method (GCDM). 98,100,102Zr; deduced levels, B(E2). Comparison with Interacting Boson model and Monte-Carlo shell-model calculations, and with previous experimental results. Systematics of B(E2) values for the first 2+, 4+ and 6+ states in 96,98,100,102,104,106Zr.

doi: 10.1103/PhysRevC.96.054323
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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
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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
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2017RE05      Phys.Rev. C 95, 054319 (2017); Erratum Phys.Rev. C 95, 069902 (2017)

J.-M.Regis, J.Jolie, N.Saed-Samii, N.Warr, M.Pfeiffer, A.Blanc, M.Jentschel, U.Koster, P.Mutti, T.Soldner, G.S.Simpson, F.Drouet, A.Vancraeyenest, G.de France, E.Clement, O.Stezowski, C.A.Ur, W.Urban, P.H.Regan, Zs.Podolyak, C.Larijani, C.Townsley, R.Carroll, E.Wilson, L.M.Fraile, H.Mach, V.Paziy, B.Olaizola, V.Vedia, A.M.Bruce, O.J.Roberts, J.F.Smith, M.Scheck, T.Kroll, A.-L.Hartig, A.Ignatov, S.Ilieva, S.Lalkovski, W.Korten, N.Marginean, T.Otsuka, N.Shimizu, T.Togashi, Y.Tsunoda

Abrupt shape transition at neutron number N=60: B(E2) values in 94, 96, 98Sr from fast γ - γ timing

NUCLEAR REACTIONS 235U(n, Fγ), E=cold neutron beam; measured Eγ, Iγ, level half-lives by fast-timing γγ(t) method using EXILL and FATIMA spectrometer at ILL-Grenoble reactor facility. 94,96,98Sr; deduced levels, B(E2)values. Comparison with previous experimental values, and with Monte Carlo Shell-model calculations.

doi: 10.1103/PhysRevC.95.054319
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2017SP02      Phys.Rev. C 95, 021302 (2017)

P.Spagnoletti, G.S.Simpson, R.Carroll, J.-M.Regis, A.Blanc, M.Jentschel, U.Koster, P.Mutti, T.Soldner, G.de France, C.A.Ur, W.Urban, A.M.Bruce, F.Drouet, L.M.Fraile, L.P.Gaffney, D.G.Ghita, S.Ilieva, J.Jolie, W.Korten, T.Kroll, C.Larijani, S.Lalkovski, R.Lica, H.Mach, N.Marginean, V.Paziy, Zs.Podolyak, P.H.Regan, M.Scheck, N.Saed-Samii, G.Thiamova, C.Townsley, A.Vancraeyenest, V.Vedia, A.Gargano, P.Van Isacker

Half-life of the 15/2+ state of 135I A test of E2 seniority relations

NUCLEAR REACTIONS 235U(n, F)135I, E=cold neutrons at PF1B facility and high-flux reactor of the ILL-Grenoble; measured prompt Eγ, Iγ, half-life of (15/2+) state in 135I by γγ(t) using EXILL-FATIMA γ-detector array of Clover Ge and LaBr3 detectors. 135I; deduced levels, B(E2), configuration, E2 seniority relations between B(E2) values in neighboring nuclei.

NUCLEAR STRUCTURE 134Te, 135I; calculated levels, J, π, B(E2) by large-scale shell-model calculations; deduced large two-body component of the E2 operator, whereas small energy shifts due to the three-body component of the effective interaction.

doi: 10.1103/PhysRevC.95.021302
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2017VO01      Phys.Rev. C 95, 024316 (2017)

A.Vogt, B.Birkenbach, P.Reiter, A.Blazhev, M.Siciliano, K.Hadynska-Klek, J.J.Valiente-Dobon, C.Wheldon, E.Teruya, N.Yoshinaga, K.Arnswald, D.Bazzacco, M.Bowry, 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, S.J.Freeman, B.Fu, A.Gadea, K.Geibel, W.Gelletly, A.Gengelbach, A.Giaz, A.Gorgen, A.Gottardo, A.B.Hayes, H.Hess, R.Hirsch, H.Hua, P.R.John, J.Jolie, A.Jungclaus, L.Kaya, W.Korten, I.Y.Lee, S.Leoni, L.Lewandowski, 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, L.Pellegri, Zs.Podolyak, G.Pollarolo, A.Pullia, M.Queiser, F.Radeck, F.Recchia, P.H.Regan, D.Rosiak, N.Saed-Samii, E.Sahin, F.Scarlassara, D.Schneiders, M.Seidlitz, B.Siebeck, G.Sletten, J.F.Smith, P.-A.Soderstrom, A.M.Stefanini, T.Steinbach, O.Stezowski, S.Szilner, B.Szpak, R.Teng, C.Ur, V.Vandone, D.D.Warner, A.Wiens, C.Y.Wu, K.O.Zell

Isomers and high-spin structures in the N=81 isotones 135Xe and 137Ba

NUCLEAR REACTIONS 238U(136Xe, X), E=1 GeV; 208Pb(136Xe, X), E=930 MeV; 198Pt(136Xe, X), E=850 MeV; 130Te(11B, 3np)137Ba, E=54 MeV; measured reaction products, Eγ, Iγ, (particle)γ-coin, γγ-coin, (TKEL)γ-coin, half-lives of isomers by γγ(t). Four experiments carried out using 136Xe beam with 208Pb and 238U targets using PRISMA magnetic mass spectrometer and AGATA demonstrator array at Legnaro PIAVE+ALPI accelerator, 136Xe beam with 198Pt target using GAMMASPHERE and CHICO particle detector arrays at LBNL-cyclotron facility, and 11B beam with 130Te target using HORUS array at Cologne FN Tandem accelerator. 135Xe, 137Ba; deduced levels, J, π, isomers, configurations, B(E2). Comparison with shell-model calculations. Systematics of levels and isomers in N=81 nuclides 131Sn, 133Te, 135Xe, 137Ba, 139Ce, 141Nd, 143Sm and 145Gd.

NUCLEAR STRUCTURE 135Xe, 137Ba; calculated levels, J, π, B(E2) using large-scale shell-model with PQM130 and SN100PN interactions, average proton occupation numbers in each single particle orbit of the gdsh model space. Comparison with experimental data.

doi: 10.1103/PhysRevC.95.024316
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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
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2016BO19      Phys.Lett. B 760, 273 (2016)

G.Bocchi, S.Leoni, B.Fornal, G.Colo, P.F.Bortignon, S.Bottoni, A.Bracco, C.Michelagnoli, D.Bazzacco, A.Blanc, G.de France, M.Jentschel, U.Koster, P.Mutti, J.-M.Regis, G.Simpson, T.Soldner, C.A.Ur, W.Urban, L.M.Fraile, R.Lozeva, B.Belvito, G.Benzoni, A.Bruce, R.Carroll, N.Cieplicka-Orynczak, F.C.L.Crespi, F.Didierjean, J.Jolie, W.Korten, T.Kroll, S.Lalkovski, H.Mach, N.Marginean, B.Melon, D.Mengoni, B.Million, A.Nannini, D.Napoli, B.Olaizola, V.Paziy, Zs.Podolyak, P.H.Regan, N.Saed-Samii, B.Szpak, V.Vedia

The mutable nature of particle-core excitations with spin in the one-valence-proton nucleus 133Sb

NUCLEAR REACTIONS 235U, 241Pu(n, F)133Sb, E low; measured fission products, Eγ, Iγ; deduced energy levels, J, π, level T1/2, B(Eλ). Comparison with theoretical calculations.

doi: 10.1016/j.physletb.2016.06.065
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2016IL01      Phys.Rev. C 94, 034302 (2016)

S.Ilieva, Th.Kroll, J.-M.Regis, N.Saed-Samii, A.Blanc, A.M.Bruce, L.M.Fraile, G.de France, A.-L.Hartig, C.Henrich, A.Ignatov, M.Jentschel, J.Jolie, W.Korten, U.Koster, S.Lalkovski, R.Lozeva, H.Mach, N.Marginean, P.Mutti, V.Paziy, P.H.Regan, G.S.Simpson, T.Soldner, M.Thurauf, C.A.Ur, W.Urban, N.Warr

Measurement of picosecond lifetimes in neutron-rich Xe isotopes

NUCLEAR REACTIONS 235U, 241Pu(n, F), E=cold neutron; measured Eγ, Iγ, γγ-coin, level half-lives for the first 2+, 4+ and 6+ states by γγ(t) and recoil-distance Doppler shift method using plunger device. EXILL and FATIMA detector arrays used at ILL-Grenoble facility. 138,140,142Xe; deduced levels, J, π, B(E2). Comparison with previous experimental results, and shell-model calculations. Systematics of B(E2) values for the first 2+ states in 132,134,136,138,140,142,144Xe.

doi: 10.1103/PhysRevC.94.034302
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2015JO01      Nucl.Phys. A934, 1 (2015)

J.Jolie, J.-M.Regis, D.Wilmsen, N.Saed-Samii, M.Pfeiffer, N.Warr, A.Blanc, M.Jentschel, U.Koster, P.Mutti, T.Soldner, G.S.Simpson, G.De France, W.Urban, F.Drouet, A.Vancraeyenest, A.M.Bruce, O.J.Roberts, L.M.Fraile, V.Paziy, A.Ignatov, S.Kisyov, S.Lalkovski, Zs.Podolyak, P.H.Regan, E.Wilson, W.Korten, C.A.Ur, R.Lica, N.Marginean

Test of the SO(6) selection rule in 196Pt using cold-neutron capture

NUCLEAR REACTIONS 195Pt(n, γ), E=cold; measured Eγ, Iγ(t), γγ-coin using EXOGAM Ge detectors and fast LaBr3(Ce) scintillators. 196Pt deduced levels, J, π, 0+3 state B(E2), T1/2 limit, decay selection rules.

doi: 10.1016/j.nuclphysa.2014.11.008
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2015RU03      Phys.Rev. C 91, 044301 (2015)

M.Rudigier, K.Nomura, M.Dannhoff, R-B.Gerst, J.Jolie, N.Saed-Samii, S.Stegemann, J.-M.Regis, L.M.Robledo, R.Rodriguez-Guzman, A.Blazhev, Ch.Fransen, N.Warr, K.O.Zell

Evolution of E2 transition strength in deformed hafnium isotopes from new measurements on 172Hf, 174Hf, and 176Hf

NUCLEAR REACTIONS 170,172Yb(α, 2n), E=27 MeV; 174Yb(α, 2n), E=26 MeV; measured conversion-electron momentum spectra using Cologne Orange magnetic spectrometer, Eγ, Iγ, γγ-, (ce)γγ-coin, level half-lives by (ce)γ(t) and γγ(t) methods with emphasis on the first 2+ states. 172,174,176Hf; deduced levels, J, π, B(E2). Comparison with previous results, and with theoretical model calculations.

NUCLEAR STRUCTURE 168,170,172,174,176,178,180Hf; calculated contour plots of the deformation energy surfaces in (β, γ) plane for 168Hf to 176Hf, parameters for the IBM Hamiltonian, levels, J, π, moments of inertia and B(E2) for levels in the ground-state rotational band. Interacting boson model with Hamiltonian from Gogny HFB calculations using the D1M interaction. Comparison with experimental data.

doi: 10.1103/PhysRevC.91.044301
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2014RE15      Phys.Rev. C 90, 067301 (2014)

J.-M.Regis, J.Jolie, N.Saed-Samii, N.Warr, M.Pfeiffer, A.Blanc, M.Jentschel, U.Koster, P.Mutti, T.Soldner, G.S.Simpson, F.Drouet, A.Vancraeyenest, G.de France, E.Clement, O.Stezowski, C.A.Ur, W.Urban, P.H.Regan, Zs.Podolyak, C.Larijani, C.Townsley, R.Carroll, E.Wilson, L.M.Fraile, H.Mach, V.Paziy, B.Olaizola, V.Vedia, A.M.Bruce, O.J.Roberts, J.F.Smith, T.Kroll, A.-L.Hartig, A.Ignatov, S.Ilieva, M.Thurauf, S.Lalkovski, D.Ivanova, S.Kisyov, W.Korten, M.-D.Salsac, M.Zielinska, N.Marginean, D.G.Ghita, R.Lica, C.M.Petrache, A.Astier, R.Leguillon

B(E2;2+1 → 0+1) value in 90Kr

NUCLEAR REACTIONS 235U(n, F), E=cold; measured prompt-fission Eγ, γγγ-coin, half-life of first 2+ state in 90Kr by fast timing technique using segmented array of Ge and Ce-doped LaBr3 detectors (EXILL and FATIMA) at ILL, Grenoble facility. 90Kr; deduced level, B(E2) of first 2+ state. Systematics of B(E2) values of first 2+ states in 86,88,90,92,94,96Kr. Comparison with IBM-2 calculations.

doi: 10.1103/PhysRevC.90.067301
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2014RE16      Nucl.Instrum.Methods Phys.Res. A763, 210 (2014)

J.-M.Regis, G.S.Simpson, A.Blanc, G.de France, M.Jentschel, U.Koster, P.Mutti, V.Paziy, N.Saed-Samii, T.Soldner, C.A.Ur, W.Urban, A.M.Bruce, F.Drouet, L.M.Fraile, S.Ilieva, J.Jolie, W.Korten, T.Kroll, S.Lalkovski, H.Mach, N.Marginean, G.Pascovici, Zs.Podolyak, P.H.Regan, O.J.Roberts, J.F.Smith, C.Townsley, A.Vancraeyenest, N.Warr

Germanium-gated γ-γ fast timing of excited states in fission fragments using the EXILL and FATIMA spectrometer

NUCLEAR REACTIONS 235U(n, F), E cold; 35Cl, 48Ti(n, γ), E thermal; measured reaction products, Eγ, Iγ. 100Zr; deduced energy levels, J, π, T1/2. Comparison with available data.

doi: 10.1016/j.nima.2014.06.004
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