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NSR database version of April 26, 2024.

Search: Author = V.Paziy

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2021SE17      Phys.Rev. C 104, 024317 (2021)

S.Sekal, L.M.Fraile, R.Lica, M.J.G.Borge, W.B.Walters, A.Aprahamian, C.Benchouk, C.Bernards, J.A.Briz, B.Bucher, C.J.Chiara, Z.Dlouhy, I.Gheorghe, D.G.Ghita, P.Hoff, J.Jolie, U.Koster, W.Kurcewicz, H.Mach, N.Marginean, R.Marginean, Z.Meliani, B.Olaizola, V.Paziy, J.M.Regis, M.Rudigier, T.Sava, G.S.Simpson, M.Stanoiu, L.Stroe

Low-spin states in ⁸⁰Ge populated in the β decay of the ⁸⁰Ga 3^- isomer

RADIOACTIVITY ^80mGa(β^-)[from decay of ⁸⁰Zn produced in U(n, F), E=fast neutrons at the ISOLDE-CERN facility, followed by separation of fission fragments passed using the ISOLDE Resonance Ionization Laser Ion Source (RILIS) and high-resolution magnetic separator]; measured Eγ, Iγ, βγ- and γγ-coin using two HPGe detectors for γ rays and an NE111A organic plastic scintillator for β detection. ⁸⁰Ge; deduced levels, J, π, β feedings, logft. Comparison with previous experimental results, and with shell-model and IBM calculations.

NUCLEAR STRUCTURE ^{70,72,74,76,78,80,82}Ge, ⁸²Se, ⁸⁴Kr, ⁸⁶Sr, ⁸⁸Zr, ⁹⁰Mo; calculated energies of second 0+ states by shell-model using Antoine code with JUN45 interaction, and NUSHELLX@MSU code with jj44bpn interaction, and IBM-1, IBM-2 models, and comparison with experimental values; Systematics of low-lying positive-parity levels up to 8+.

doi: 10.1103/PhysRevC.104.024317
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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, ^{148,150,152,154}Sm; 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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2020PA26      Phys.Rev. C 102, 014329 (2020)

V.Paziy, L.M.Fraile, H.Mach, B.Olaizola, G.S.Simpson, A.Aprahamian, C.Bernards, J.A.Briz, B.Bucher, C.J.Chiara, Z.Dlouhy, I.Gheorghe, D.Ghita, P.Hoff, J.Jolie, U.Koster, W.Kurcewicz, R.Lica, N.Marginean, R.Marginean, J.-M.Regis, M.Rudigier, T.Sava, M.Stanoiu, L.Stroe, W.B.Walters

Fast-timing study of ⁸¹Ga from the β decay of ⁸¹Zn

RADIOACTIVITY ⁸¹Zn(β^-), (β^-n)[from U(p, F), E=1.4 GeV at CERN PS-Booster (PSB) facility, followed by separation of ionized nuclei using the ISOLDE-RILIS]; measured Eγ, Iγ, b^-, βγ- and γγ-coin, half-life of ⁸¹Zn decay, level half-lives by βγγ(t) fast-timing technique, β-delayed neutron branching ratio or P_n using HPGe and LaBr₃ detectors for γ detection and a plastic scintillator for β detection at CERN-ISOLDE. ^80,81Ga(β^-); measured half-lives of ⁸⁰Ga and ⁸¹Ga decays. ^80,81Ga; deduced levels, J, π, Iβ, logft, B(M1), and B(E2). Comparison with large-scale shell model calculations using the NuShellX@MSU and ANTOINE codes with JUN45 and jj44b interactions. Systematics of low-lying levels in ^{71,73,75,77,79,81}Ga, ⁷⁹Cu, ⁸³As, ⁸⁵Br, ⁸⁷Rb. ⁸¹Zn; discussed spin, parity and configuration of the ground state.

doi: 10.1103/PhysRevC.102.014329
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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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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, 102}Zr

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 ^{96,98,100,102,104,106}Zr.

doi: 10.1103/PhysRevC.96.054323
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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, 98}Sr 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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2017VE05      Phys.Rev. C 96, 034311 (2017)

V.Vedia, V.Paziy, L.M.Fraile, H.Mach, W.B.Walters, A.Aprahamian, C.Bernards, J.A.Briz, B.Bucher, C.J.Chiara, Z.Dlouhy, I.Gheorghe, D.Ghita, P.Hoff, J.Jolie, U.Koster, W.Kurcewicz, R.Lica, N.Marginean, R.Marginean, B.Olaizola, J.-M.Regis, M.Rudigier, T.Sava, G.S.Simpson, M.Stanoiu, L.Stroe

Search for the ⁷³Ga ground-state doublet splitting in the β decay of ⁷³Zn

RADIOACTIVITY ⁷³Zn(β^-)[from U(p, F), E=1.4 GeV]; measured Eγ, Iγ, βγ- and γγ-coin, half-life of ⁷³Zn from γ-decay curves, level half-lives by fast-timing βγγ(t) technique using Resonance Ionization Laser Ion Source (RILIS) and magnetic high-resolution mass separator (HRS) at ISOLDE-CERN. ⁷³Ga; deduced levels, ground state doublet, J, π, β feedings, logft, B(M1), B(E2). ⁷³Zn(IT); measured Eγ, half-life of the isomer; deduced no evidence for a 42-keV transition from the isomer. Comparison with previous measurements, and with shell-model calculations. Systematics of level structure in ^71,73,75Ga.

doi: 10.1103/PhysRevC.96.034311
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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 T_1/2, 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 ^{132,134,136,138,140,142,144}Xe.

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), T_1/2 limit, decay selection rules.

doi: 10.1016/j.nuclphysa.2014.11.008
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2014LI32      Phys.Rev. C 90, 014320 (2014)

R.Lica, N.Marginean, D.G.Ghita, H.Mach, L.M.Fraile, G.S.Simpson, A.Aprahamian, C.Bernards, J.A.Briz, B.Bucher, C.J.Chiara, Z.Dlouhy, I.Gheorghe, P.Hoff, J.Jolie, U.Koster, W.Kurcewicz, R.Marginean, B.Olaizola, V.Paziy, J.M.Regis, M.Rudigier, T.Sava, M.Stanoiu, L.Stroe, W.B.Walters

Low-lying isomeric states in ⁸⁰Ga from the β^- decay of ⁸⁰Zn

RADIOACTIVITY ⁸⁰Zn(β^-)[from U(p, X), E=1.4 GeV]; measured Eγ, Iγ, γγ-, βγ-coin, half-life of 708-keV level in ⁸⁰Zn by βγγ(t) at ISOLDE-CERN facility. ⁸⁰Ga; deduced levels, ordering of the ground state and long-lived isomer, J, π, conversion coefficient, multipolarities, β feedings, logft, reduced transition probabilities. Comparison with shell model calculations using jj44bpn and JUN45 interactions.

doi: 10.1103/PhysRevC.90.014320
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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 ^{86,88,90,92,94,96}Kr. 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, T_1/2. Comparison with available data.

doi: 10.1016/j.nima.2014.06.004
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