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NSR database version of May 24, 2024.

Search: Author = J.Samorajczyk-Pysk

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2021SA33      Phys.Rev. C 104, 024322 (2021)

J.Samorajczyk-Pysk, Ch.Droste, L.Prochniak, J.Srebrny, S.G.Rohozinski, J.Andrzejewski, S.Dutt, A.Gawlik, K.Hadynska-Klek, L.Janiak, M.Klintefjord, M.Kowalczyk, J.Kowalska, R.Kumar, T.Marchlewski, P.J.Napiorkowski, J.Perkowski, W.Pikatek, M.Piersa-Silkowska, T.Roginski, M.Saxena, A.Stolarz, A.Tucholski

Low-spin levels in 140Sm: Five 0+ states and the question of softness against nonaxial deformation

RADIOACTIVITY 140Eu(EC), (β+)[from decay of 140Gd produced in 104Pd(40Ar, X), E=210 MeV from the U-200P cyclotron of University of Warsaw]; measured Eγ, Iγ, γγ-coin, γγ(θ) using EAGLE array of 12 Compton-suppressed HPGe detectors. 140Sm; deduced levels, J, π, multipolarities, B(E2) ratios. Comparison with full five-dimensional microscopic General Bohr Hamiltonian (GBH) and phenomenological gamma-soft Warsaw model calculations.

NUCLEAR STRUCTURE 140Sm; calculated potential energy surface (PES) in (β, γ) plane using the SLy4 Skyrme interaction and seniority-type pairing, levels, J, π, probability distributions for the five lowest 0+ states in the phenomenological and microscopic models, quadrupole invariants using full five-dimensional microscopic General Bohr Hamiltonian (GBH) and phenomenological gamma-soft Warsaw model calculations. Comparison with experimental data.

doi: 10.1103/PhysRevC.104.024322
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2020MO35      Phys.Rev. C 102, 054304 (2020)

L.Morrison, K.Hadynska-Klek, Zs.Podolyak, D.T.Doherty, L.P.Gaffney, L.Kaya, L.Prochniak, J.Samorajczyk-Pysk, J.Srebrny, T.Berry, A.Boukhari, M.Brunet, R.Canavan, R.Catherall, S.J.Colosimo, J.G.Cubiss, H.De Witte, Ch.Fransen, E.Giannopoulos, H.Hess, T.Kroll, N.Lalovic, B.Marsh, Y.Martinez Palenzuela, P.J.Napiorkowski, G.O'Neill, J.Pakarinen, J.P.Ramos, P.Reiter, J.A.Rodriguez, D.Rosiak, S.Rothe, M.Rudigier, M.Siciliano, J.Snall, P.Spagnoletti, S.Thiel, N.Warr, F.Wenander, R.Zidarova, M.Zielinska

Quadrupole deformation of 130Xe measured in a Coulomb-excitation experiment

NUCLEAR REACTIONS 94Mo(130Xe, 130Xe'), E=4.195 MeV/nucleon from HIE-ISOLDE-CERN linear accelerator; measured projectile-and target-like particles using a segmented double-sided silicon strip detector (DSSSD), Eγ, Iγ, γ(θ) (particle)γ- and (particle)(particle)γ-coin using Miniball array of 23 HPGe detectors. Measured Coulomb excitation yields analyzed using GOSIA least-squares fitting code. 130Xe; deduced levels, J, π, E2 and M1 matrix elements, B(E2), B(M1), spectroscopic quadrupole moments (Q) for the first 2+ and 4+ states and second 2+ state, and shape parameters for the 0+ ground state. Comparison with previous experimental data, and with several theoretical model calculations.

NUCLEAR STRUCTURE 130Xe; calculated levels, J, π using general Bohr Hamiltonian with the mean-field theory and Universal Nuclear Energy Density Functional (UNEDF0), shell-model with the GCN50:82 and SN100PN interactions, Davydov-Filippov and γ-soft phenomenological models; calculated quadrupole shape invariants for 0+ ground state and the first 2+ state using general Bohr Hamiltonian (GBH) model. Comparison with experimental data.

doi: 10.1103/PhysRevC.102.054304
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2019TU09      Phys.Rev. C 100, 014330 (2019)

A.Tucholski, Ch.Droste, J.Srebrny, C.M.Petrache, J.Skalski, P.Jachimowicz, M.Fila, T.Abraham, M.Kisielinski, A.Kordyasz, M.Kowalczyk, J.Kownacki, T.Marchlewski, P.J.Napiorkowski, L.Prochniak, J.Samorajczyk-Pysk, A.Stolarz, A.Astier, B.F.Lv, E.Dupont, S.Lalkovski, P.Walker, E.Grodner, Z.Patyk

Lifetime of the recently identified 10+ isomeric state at 3279 keV in the 136Nd nucleus

NUCLEAR REACTIONS 120Sn(20Ne, 4n), E=85 MeV; measured Eγ, Iγ, γγ-coin, level half-lives using recoil-distance Doppler shift (RDDS) method with a plunger device using the EAGLE array of 16 HPGe detector at the U-200P cyclotron facility of the Heavy Ion Laboratory in Warsaw. 136Nd; deduced levels, B(E1), B(E2), reduced hindrance factor for the 10+ state at 3279 keV; calculated energy surface contour in (β20, β22) plane, neutron and proton single-particle energies using microscopic-macroscopic approach, based on deformed Woods-Saxon single-particle potential and the Yukawa-plus-exponential macroscopic energy.

doi: 10.1103/PhysRevC.100.014330
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2017PE03      Phys.Rev. C 95, 014305 (2017)

J.Perkowski, J.Andrzejewski, Ch.Droste, L.Janiak, E.Grodner, S.G.Rohozinski, L.Prochniak, J.Srebrny, J.Samorajczyk-Pysk, T.Abraham, K.Hadynska-Klek, M.Kisielinski, M.Komorowska, M.Kowalczyk, J.Kownacki, T.Marchlewski, J.Mierzejewski, P.Napiorkowski, A.Stolarz, A.Korman, M.Zielinska

Decay of the Iπisomeric state in 134Nd and 184Pt studied by electron and gamma spectroscopy

RADIOACTIVITY 134Nd, 184Pt(IT)[from 122Te(16O, 4n), E=90 MeV and 175Lu(14N, 5n)184Pt, E=90 MeV at the Heavy Ion Laboratory of University of Warsaw]; measured Eγ, Iγ, ce, γγ- and γ(ce)-coin, isomer half-lives using EAGLE array for γ detection and conversion-electron spectrometers; deduced levels, J, π, K-isomers, K- and L-conversion coefficients, multipolarities, mixing ratios, B(E1), B(E2), B(E3), hindrance factors for γ transitions, alignments. Comparison with VMI plus two band mixing and the Davydov-Filippov model.

NUCLEAR STRUCTURE 134Nd, 184Pt; calculated mean-field collective potential energy surfaces in (β, γ) plane, Kπ=8- isomeric state; analyzed weakening of the K-forbiddenness by rotational K-mixing (Coriolis interaction), and triaxiality (Davydov-Fillipov model).

doi: 10.1103/PhysRevC.95.014305
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Data from this article have been entered in the XUNDL database. For more information, click here.


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