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NSR database version of April 11, 2024.

Search: Author = T.M.Shneidman

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2023IS03      Phys.Lett. B 843, 138008 (2023)

A.V.Isaev, R.S.Mukhin, A.V.Andreev, Z.Asfari, M.L.Chelnokov, V.I.Chepigin, H.M.Devaraja, O.Dorvaux, B.Gall, K.Hauschild, I.N.Izosimov, A.A.Kuznetsova, A.Lopez-Martens, O.N.Malyshev, A.G.Popeko, Yu.A.Popov, A.Rahmatinejad, B.Sailaubekov, T.M.Shneidman, E.A.Sokol, A.I.Svirikhin, M.S.Tezekbayeva, A.V.Yeremin, N.I.Zamyatin

Structure of the prompt neutron multiplicity distribution in the spontaneous fission of 256Rf

RADIOACTIVITY 256Rf(SF), (α) [from 208Pb(50Ti, X), E=237 MeV];measured fission products, En, In, TOF; deduced neutron multiplicity distribution, alpha decay branching ratio and T1/2. Prompt neutron multiplicity study in the superheavy element region. SHELS separator, U-400 cyclotron, the Flerov laboratory at JINR.

doi: 10.1016/j.physletb.2023.138008
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2023IS06      Phys.Part. and Nucl.Lett. 20, 988 (2023)

T.Issatayev, N.K.Skobelev, T.M.Shneidman, Yu.E.Penionzhkevich, V.Burjan, J.Mrazek

Investigation into Excited States of 46Ti Nuclei in Reactions with the 3He Beam at 29 MeV

NUCLEAR REACTIONS 45Sc(3He, d)46Ti, E=29 MeV; measured reaction products; deduced σ(θ), energy levels in the range from the ground state to highly excited states with energies up to 17 MeV. Comparison with calculations. The U-120M cyclotron at the Institute of Nuclear Physics of the Academy of Sciences of the Czech Republic in Rez.

doi: 10.1134/S1547477123050400
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2023JO11      Int.J.Mod.Phys. E32, 2340002 (2023)

R.V.Jolos, E.A.Kolganova, E.V.Mardyban, T.M.Shneidman

Reflection-asymmetric mode in the structure of heavy nuclei

NUCLEAR STRUCTURE 238,240Pu, 220,222,224,226,228Ra, 152,156Gd, 224,226,228,230,232,234Th, 238U, 144Ba; calculated values of parity splitting as a function of angular momentum, parity splitting in the alternating parity bands; deduced parameters.

doi: 10.1142/S0218301323400025
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2022DE36      Phys.Atomic Nuclei 85, 805 (2022)

M.Demichev, S.Abou El Azm, A.Bezbakh, M.Gostkin, N.Jovancevic, D.Knezevic, V.Kobets, M.Krmar, U.Kruchonak, S.Mitrofanov, A.Nozdrin, S.Porokhovoy, A.Rahmatinejad, T.Shneidman, V.Stegaylov, Y.Teterev, A.Zhemchugov

Study of 209Bi(γ, xn) Reactions in Energy Region up To 100 MeV

NUCLEAR REACTIONS 209Bi(γ, xn), E<100 MeV; measured reaction products, Eγ, Iγ. 200,201,202,203,204,205,206,207Bi; deduced relative yields. Comparison with GEANT4 simulations. Electron accelerator LINAC-200, located at Laboratory of Nuclear Problems of JINR, Dubna.

doi: 10.1134/S1063778823010167
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2022IS05      Eur.Phys.J. A 58, 108 (2022)

A.V.Isaev, R.S.Mukhin, A.V.Andreev, M.A.Bychkov, M.L.Chelnokov, V.I.Chepigin, H.M.Devaraja, O.Dorvaux, M.Forge, B.Gall, K.Hauschild, I.N.Izosimov, K.Kessaci, A.A.Kuznetsova, A.Lopez-Martens, O.N.Malyshev, A.G.Popeko, Yu.A.Popov, A.Rahmatinejad, B.Sailaubekov, T.M.Shneidman, E.A.Sokol, A.I.Svirikhin, D.A.Testov, M.S.Tezekbayeva, A.V.Yeremin, N.I.Zamyatin, K.Sh.Zhumadilov

Prompt neutron emission in the spontaneous fission of 246Fm

RADIOACTIVITY 246Fm(SF) [from 208Pb(40Ar, X), E=183 MeV]; measured decay products, En, In; deduced neutron yields, nubar, spontaneous fission branching ratio, T1/2. Tikhonov method of statistical regularisation. FLNR JINR using the SHELS separator and the SFiNx detection system, the U-400 cyclotron.

doi: 10.1140/epja/s10050-022-00761-3
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2022MA10      Phys.Rev. C 105, 024321 (2022)

E.V.Mardyban, E.A.Kolganova, T.M.Shneidman, R.V.Jolos

Evolution of the phenomenologically determined collective potential along the chain of Zr isotopes

NUCLEAR STRUCTURE 92,94,96,98,100,102Zn; calculated low-ling collective levels, J, π, B(E2), collective potentials, potential-energy surfaces. Calculations using quadrupole-collective Bohr Hamiltonian. Comparison to experimental data.

doi: 10.1103/PhysRevC.105.024321
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2022MA66      Phys.Part. and Nucl.Lett. 19, 463 (2022)

E.V.Mardyban, T.M.Shneidman, E.A.Kolganova, R.V.Jolos

Influence of Triaxiality on the Description of Low-Energy Excitation Spectrum of 96Zr

NUCLEAR STRUCTURE 96Zr; calculated potential energies, B(E2); deduced influence of nonaxiality on the description of experimental data, impact of the probabilities of quadrupole transitions by the relative weights of the components with different value of projection K of angular momentum on the symmetry axis.

doi: 10.1134/S1547477122050272
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2022MA70      Phys.Part. and Nucl.Lett. 19, 646 (2022)

E.V.Mardyban, T.M.Shneidman, E.A.Kolganova, R.V.Jolos

Manifestation of Reflection-Asymmetric Deformation in the Structure of Superheavy Nuclei

NUCLEAR STRUCTURE 250,252,254,256,258,260,262No, 254,256,258,260,262,264,266Rf, 258,260,262,264,266,268,270Sg, 264,266,268,270,272,274Hs, 268,270,272,274,276,278,280,282Ds; calculated negative parity energy levels, initial parity splitting, transition dipole, quadrupole and octupole moments using the cluster model of a dinuclear system; deduced assessments of the critical angular momenta at which the transition from oscillatory motion to stable reflection-asymmetric deformation.

doi: 10.1134/S1547477122060152
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2022RA06      Phys.Rev. C 105, 044328 (2022)

A.Rahmatinejad, T.M.Shneidman, G.G.Adamian, N.V.Antonenko, P.Jachimowicz, M.Kowal

Energy dependent ratios of level-density parameters in superheavy nuclei

NUCLEAR STRUCTURE 282,283,284,285,286,287,288,289,290,291,292,293,294,295Mc, 283,284,285,286,287,288,289,290,291,292,293,294,295,296Lv, 279,280,281,282,283,284,285,286,287,288,289,290,291Nh, 291,292,293,294,295,296,297,298Ts, 291,292,293,294,295,296,297,298,299Og, 292Fl, 295,296,297,298,299,300119, 295,296,297,298,299,300,301,302120; calculated intrinsic nuclear level densities, energy-dependent level-density parameters, energy-dependent ratios of level-density parameters corresponding to the nuclei at the fission saddle point and to proton and α-particle emission residues at their ground state to those obtained for the daughter nuclei after neutron emission. Thermodynamic superfluid formalism using the single-particle energies obtained from the diagonalization of the deformed Woods-Saxon potential.

doi: 10.1103/PhysRevC.105.044328
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2022RA31      Phys.Part. and Nucl.Lett. 19, 470 (2022)

A.Rahmatinejad, T.M.Shneidman

Kinetic Energy Distribution in Multi-Step Neutron Emission from Superheavy Nuclei

NUCLEAR STRUCTURE 299Og, 302120; calculated probability of realization of x=2-8 neutron evaporation channels, average kinetic energies of intermediate neutrons evaporated using the superfluid formalism with the single-particle energies obtained from the Woods-Saxon potential diagonalization at the ground state.

doi: 10.1134/S1547477122050351
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2022SH31      Phys.Rev. C 106, 014310 (2022)

T.M.Shneidman, N.Minkov, G.G.Adamian, N.V.Antonenko

Effect of Coriolis mixing on lifetime of isomeric states in heavy nuclei

NUCLEAR STRUCTURE 249Cm, 251Cf, 253Fm, 255No, 257Rf; calculated one-quasiparticle spectra, levels, J, π, Nilsson configurations using the two-center shell model (TCSM), and axially symmetric deformed shell model, matrix elements for the Coriolis interaction between different quasiparticle states, components contributing to the wave functions of second 7/2+ states, energy interval between the two lowest 7/2+ states, B(E2), B(M1), half-lives of the 7/2+ isomeric states; deduced that Coriolis mixing leads to the enhanced quadrupole transition rate from the isomeric state in 251Cf, and reduced half-life of its lowest isomeric state. Comparison with available experimental data.

doi: 10.1103/PhysRevC.106.014310
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2022SP01      Phys.Rev. C 105, 024323 (2022)

P.Spagnoletti, P.A.Butler, L.P.Gaffney, K.Abrahams, M.Bowry, J.Cederkall, T.Chupp, G.de Angelis, H.De Witte, P.E.Garrett, A.Goldkuhle, C.Henrich, A.Illana, K.Johnston, D.T.Joss, J.M.Keatings, N.A.Kelly, M.Komorowska, J.Konki, T.Kroll, M.Lozano, B.S.Nara Singh, D.O'Donnell, J.Ojala, R.D.Page, L.G.Pedersen, C.Raison, P.Reiter, J.A.Rodriguez, D.Rosiak, S.Rothe, M.Scheck, M.Seidlitz, T.M.Shneidman, B.Siebeck, J.Sinclair, J.F.Smith, M.Stryjczyk, P.Van Duppen, S.Vinals, V.Virtanen, K.Wrzosek-Lipska, N.Warr, M.Zielinska

Coulomb excitation of 222Rn

NUCLEAR REACTIONS 120Sn, 60Ni(222Rn, 222Rn'), E=4.23 MeV/nucleon [secondary 222Rn beam produced in Th(p, X), E=1.4 GeV reaction]; measured reaction products, Eγ, Iγ, (particle)γ-coin. 222Rn; deduced levels, J, π, E1, E2 and E3 matrix elements, high-spin levels, bands, intrinsic quadrupole and octupole moments. GOSIA analysis of Coulomb excitation cross sections. Miniball HPGe array at HIE-ISOLDE. Systematics of quadrupole moments and other parameters in even-A Ra and Rn isotopes.

doi: 10.1103/PhysRevC.105.024323
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2022WA21      Phys.Rev. C 106, L011303 (2022)

C.G.Wang, R.Han, C.Xu, H.Hua, R.A.Bark, S.Q.Zhang, S.Y.Wang, T.M.Shneidman, S.G.Zhou, J.Meng, S.M.Wyngaardt, A.C.Dai, F.R.Xu, X.Q.Li, Z.H.Li, Y.L.Ye, D.X.Jiang, C.G.Li, C.Y.Niu, Z.Q.Chen, H.Y.Wu, D.W.Luo, S.Wang, D.P.Sun, C.Liu, Z.Q.Li, N.B.Zhang, R.J.Guo, P.Jones, E.A.Lawrie, J.J.Lawrie, J.F.Sharpey-Schafer, M.Wiedeking, S.N.T.Majola, T.D.Bucher, T.Dinoko, B.Maqabuka, L.Makhathini, L.Mdletshe, O.Shirinda, K.Sowazi

First evidence of an octupole rotational band in Ge isotopes

NUCLEAR REACTIONS 74Ge(α, 3nα)71Ge, E=58.6, 62.6 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(ADO), γγ(linear polarization) using AFRODITE array for γ detection at the Separated Sector Cyclotron facility of iThemba LABS. 71Ge; deduced levels, J, π, multipolarities, alignments, rotational bands, octupole rotational band. Comparison with semi-microscopic cluster model calculations. Systematics of energies of 15/2- states in 67,69,71Ge, and those of 2+ and 3- states in 66,68,70,72,74Ge. Systematics of B(E1)/B(E2) ratios for 19/2- states in 67,71Ge in comparison to the ratio for octupole-deformed 220Ra nucleus. 71Ge, 74Se; calculated levels, J, π, B(E2) using two-center shell model (TCSM), and compared with experimental data.

doi: 10.1103/PhysRevC.106.L011303
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2021IS09      Phys.Part. and Nucl.Lett. 18, 449 (2021)

A.V.Isaev, A.V.Andreev, M.L.Chelnokov, V.I.Chepigin, I.N.Izosimov, A.A.Kuznetsova, O.N.Malyshev, R.S.Mukhin, A.G.Popeko, Y.A.Popov, T.M.Shneidman, E.A.Sokol, A.I.Svirikhin, M.S.Tezekbayeva, A.V.Yeremin, N.I.Zamyatin, P.Brionnet, O.Dorvaux, B.Gall, K.Kessaci, A.Sellam, K.Hauschild, A.Lopez-Martens, S.Antalic, P.Mosat

Comparative Study of Spontaneous-Fission Characteristics of 252No and 254No Isotopes

RADIOACTIVITY 252,254No(SF) [from 206,208Pb(48Ca, X), E=215 MeV]; measured decay products; deduced T1/2, total kinetic energies of fission fragments, and prompt-neutron multiplicities (nubars). SHELS separator, Flerov Laboratory of Nuclear Reactions (JINR).

doi: 10.1134/S1547477121040087
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41741.


2021RA04      Phys.Rev. C 103, 034309 (2021)

A.Rahmatinejad, A.N.Bezbakh, T.M.Shneidman, G.Adamian, N.V.Antonenko, P.Jachimowicz, M.Kowal

Level-density parameters in superheavy nuclei

NUCLEAR STRUCTURE 296Lv; calculated potential energy contour in the (β20, β22) plane, proton and neutron single-particle spectra along the fission paths using the Woods-Saxon potential diagonalization. 292Fl, 296Lv, 300120; calculated energy dependencies of the ground-state and saddle-point level-density parameters. A=277-302; calculated mass number dependence of the asymptotic ground state and saddle-point level-density parameters. 282,283,284,285,286,287,288,289,290,291,292Fl; calculated ratios of the level density parameters at the saddle point and ground state. 236U, 240Pu; calculated dependence of fission probability on excitation energy for the fissioning nuclei. 293,294,295,296,297Ts, 295,296,297,298,299,300,301,302120; calculated ratios of the level density parameter of the mother nucleus at the saddle point to that of the daughter nucleus after neutron separation at the ground state. 278Cn, 294Og, 296,298120; calculated dependence of neutron emission probability on excitation energy. Level density parameter calculated by fitting the obtained results with the standard Fermi gas expression.

doi: 10.1103/PhysRevC.103.034309
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2021VO14      Phys.Lett. B 821, 136624 (2021)

M.von Tresckow, M.Rudigier, T.M.Shneidman, T.Kroll, M.Boromiza, C.Clisu, C.Costache, d.Filipescu, N.M.Florea, I.Gheorghe, K.Gladnishki, A.Ionescu, D.Kocheva, R.Lica, N.Marginean, R.Marginean, K.R.Mashtakov, C.Mihai, R.E.Mihai, A.Negret, C.R.Nita, A.Olacel, A.Oprea, S.Pascu, G.Rainovski, T.Sava, M.Scheck, P.Spagnoletti, C.Sotty, L.Stan, I.Stiru, S.Toma, A.Turturica, S.Ujeniuc

New evidence for alpha clustering structure in the ground state band of 212Po

NUCLEAR REACTIONS 208Pb(10B, 6Li)212Po, E=51 MeV; measured reaction products, Eγ, Iγ; deduced γ-ray energies, level T1/2, B(E2). ROSPHERE array, Horia Hulubei National Institute. Delayed coincidence fast-timing method.

doi: 10.1016/j.physletb.2021.136624
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2020BE26      Bull.Rus.Acad.Sci.Phys. 84, 943 (2020)

A.N.Bezbakh, A.Rahmati Nejad, T.M.Shneidman, N.V.Antonenko

Level Densities of Nuclei with Z = 112-120

NUCLEAR STRUCTURE Z=112-120; calculated level densities of superheavy nuclei using single-particle spectra obtained in a macroscopic and microscopic model based on the Woods–Saxon single-particle potential.

doi: 10.3103/S1062873820080092
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2020BU01      Phys.Rev.Lett. 124, 042503 (2020)

P.A.Butler, L.P.Gaffney, P.Spagnoletti, K.Abrahams, M.Bowry, J.Cederkall, G.de Angelis, H.De Witte, P.E.Garrett, A.Goldkuhle, C.Henrich, A.Illana, K.Johnston, D.T.Joss, J.M.Keatings, N.A.Kelly, M.Komorowska, J.Konki, T.Kroll, M.Lozano, B.S.Nara Singh, D.O'Donnell, J.Ojala, R.D.Page, L.G.Pedersen, C.Raison, P.Reiter, J.A.Rodriguez, D.Rosiak, S.Rothe, M.Scheck, M.Seidlitz, T.M.Shneidman, B.Siebeck, J.Sinclair, J.F.Smith, M.Stryjczyk, P.Van Duppen, S.Vinals, V.Virtanen, N.Warr, K.Wrzosek-Lipska, M.Zielinska

Evolution of Octupole Deformation in Radium Nuclei from Coulomb Excitation of Radioactive 222Ra and 228Ra Beams

NUCLEAR REACTIONS 60Ni, 120Sn(222Ra, 222Ra'), (228Ra, 228Ra'), E=4.31 MeV/nucleon; measured reaction products, Eγ, Iγ. 222,228Ra; deduced γ-ray energies, dipole moments, quadrupole moments, E2 and E3 matrix elements, octupole collectivity.

doi: 10.1103/PhysRevLett.124.042503
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2020BU20      Nat. Commun. 11, 3560 (2020)

P.A.Butler, L.P.Gaffney, P.Spagnoletti, J.Konki, M.Scheck, J.F.Smith, K.Abrahams, M.Bowry, J.Cederkall, T.Chupp, G.de Angelis, H.De Witte, P.E.Garrett, A.Goldkuhle, C.Henrich, A.Illana, K.Johnston, D.T.Joss, J.M.Keatings, N.A.Kelly, M.Komorowska, T.Kroll, M.Lozano, B.S.Nara Singh, D.O'Donnell, J.Ojala, R.D.Page, L.G.Pedersen, C.Raison, P.Reiter, J.A.Rodriguez, D.Rosiak, S.Rothe, T.M.Shneidman, B.Siebeck, M.Seidlitz, J.Sinclair, M.Stryjczyk, P.Van Duppen, S.Vinals, V.Virtanen, N.Warr, K.Wrzosek-Lipska, M.Zielinska

Addendum: The observation of vibrating pear-shapes in radon nuclei

NUCLEAR REACTIONS 120Sn(222Rn, 222Rn'), E=4.23 MeV/nucleon; 120Sn(224Rn, 224Rn'), (226Rn, 226Rn'), E=5.08 MeV/nucleon; analyzed available data with updated computer codes. 222,224,226Rn; deduced additional γ-ray energies for high-spin transitions, J, π, level schemes, octupole-vibrational bands. Comparison with systematics of radon isotopes. Root analysis files.

doi: 10.1038/s41467-020-17309-y
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2020JO08      Phys.Atomic Nuclei 83, 550 (2020)

R.V.Jolos, E.A.Kolganova, L.A.Malov, E.V.Mardyban, D.A.Sazonov, T.M.Shneidman

Phase Transitions and Shape Coexistence in Atomic Nuclei

NUCLEAR STRUCTURE 96Zr, 150,152Sm, 152,156Gd, 222Ra, 240Pu, 286Fl; calculated energy levels, J, π, angular momenta, bands, potential energy surfaces.

doi: 10.1134/S1063778820040092
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2020MA32      Phys.Atomic Nuclei 83, 53 (2020)

E.V.Mardyban, T.M.Shneidman, E.A.Kolganova, R.V.Jolos

Description of Stabilization of Octupole Deformation in Alternating-Parity Bands of Heavy Nuclei

doi: 10.1134/S1063778820010093
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2020MA44      Phys.Rev. C 102, 034308 (2020)

E.V.Mardyban, E.A.Kolganova, T.M.Shneidman, R.V.Jolos, N.Pietralla

Description of the low-lying collective states of 96Zr based on the collective Bohr Hamiltonian including the triaxiality degree of freedom

NUCLEAR STRUCTURE 96Zr; calculated levels, J, π, B(E2), B(M1), quadrupole moment, ρ2 for E0 transitions, potential energy surfaces in (β, γ) planes using geometrical collective model for low-lying positive-parity states. Comparison with experimental data.

doi: 10.1103/PhysRevC.102.034308
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2020RA07      Phys.Rev. C 101, 054315 (2020)

A.Rahmatinejad, T.M.Shneidman, N.V.Antonenko, A.N.Bezbakh, G.G.Adamian, L.A.Malov

Collective enhancements in the level densities of Dy and Mo isotopes

NUCLEAR STRUCTURE 94,96,98Mo, 160,162,164Dy; calculated β2 and β4 deformation parameters, shell corrections, pairing energies, neutron-, and proton-pairing gaps in the ground states, intrinsic level densities, energy dependent level densities, critical temperatures and corresponding critical energies, spin cut-off parameters, number of collective levels, and collective enhancement factors using the superfluid model with single-particle energies from the quasiparticle-phonon model (QPM) and Woods-Saxon potential. Comparison with experimental densities.

doi: 10.1103/PhysRevC.101.054315
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2020RO11      Phys.Atomic Nuclei 83, 15 (2020)

I.S.Rogov, N.V.Antonenko, G.G.Adamian, T.M.Shneidman

Effect of the Nucleon-Density Distribution on the Description of Nuclear Decay

doi: 10.1134/S1063778820010123
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2020RO13      Nucl.Phys. A1002, 121995 (2020)

I.S.Rogov, G.G.Adamian, N.V.Antonenko, T.M.Shneidman, H.Lenske

Nucleon density distribution in description of nuclear decays

NUCLEAR STRUCTURE 44Ti; analyzed available data; calculated spectroscopic factors.

RADIOACTIVITY 236,238U(α), (SF); analyzed self-consistently calculated nucleon density distributions; deduced T1/2.

doi: 10.1016/j.nuclphysa.2020.121995
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2019BU29      Nat. Commun. 10, 2473 (2019)

P.A.Butler, L.P.Gaffney, P.Spagnoletti, J.Konki, M.Scheck, J.F.Smith, K.Abrahams, M.Bowry, J.Cederkall, T.Chupp, G.de Angelis, H.De Witte, P.E.Garrett, A.Goldkuhle, C.Henrich, A.Illana, K.Johnston, D.T.Joss, J.M.Keatings, N.A.Kelly, M.Komorowska, T.Kroll, M.Lozano, B.S.Nara Singh, D.O'Donnell, J.Ojala, R.D.Page, L.G.Pedersen, C.Raison, P.Reiter, J.A.Rodriguez, D.Rosiak, S.Rothe, T.M.Shneidman, B.Siebeck, M.Seidlitz, J.Sinclair, M.Stryjczyk, P.Van Duppen, S.Vinals, V.Virtanen, N.Warr, K.Wrzosek-Lipska, M.Zielinska

The observation of vibrating pear-shapes in radon nuclei

NUCLEAR REACTIONS 120Sn(222Rn, 222Rn'), E=4.23 MeV/nucleon; 120Sn(224Rn, 224Rn'), (226Rn, 226Rn'), E=5.08 MeV/nucleon; measured reaction products, Eγ, Iγ, γ-γ-coin., X-rays. 222,224,226Rn; deduced γ-ray energies, J, π, level schemes, octupole-vibrational bands, high-spin transitions. Comparison with systematics of radon isotopes. HIE-ISOLDE accelerator, Miniball spectrometer.

doi: 10.1038/s41467-019-10494-5
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2019GR06      J.Phys.(London) G46, 075101 (2019)

E.T.Gregor, N.N.Arsenyev, M.Scheck, T.M.Shneidman, M.Thurauf, C.Bernards, A.Blanc, R.Chapman, F.Drouet, A.A.Dzhioev, G.de France, M.Jentschel, J.Jolie, J.M.Keatings, T.Kroll, U.Koster, R.Leguillon, K.R.Mashtakov, P.Mutti, D.O'Donnell, C.M.Petrache, G.S.Simpson, J.Sinclair, J.F.Smith, T.Soldner, P.Spagnoletti, A.V.Sushkov, W.Urban, A.Vancraeyenest, J.R.Vanhoy, V.Werner, K.O.Zell, M.Zielinska

Decay properties of the 3-1 level in 96Mo

NUCLEAR REACTIONS 95Mo(n, 2γ), E cold; measured reaction products, Eγ, Iγ, γ-γ-coin.; deduced γ-ray energies and intensities, B(Eλ). Comparison with QRPA results.

NUCLEAR STRUCTURE 92,94,96,98Mo; calculated energy levels, B(Eλ) using QRPA approach.

doi: 10.1088/1361-6471/ab0b5e
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2019SA20      Phys.Rev. C 99, 031304 (2019)

D.A.Sazonov, E.A.Kolganova, T.M.Shneidman, R.V.Jolos, N.Pietralla, W.Witt

Description of shape coexistence in 96Zr based on the quadrupole-collective Bohr Hamiltonian

NUCLEAR STRUCTURE 96Zr; calculated low-lying levels, J, π, B(E2), B(M1), ρ2 for E0 transitions, quadrupole moment for 2+, wave functions of the first and second 0+ and 2+ states, and shape coexistent potential using quadrupole-collective Bohr Hamiltonian with the potential having two minima corresponding to spherical and deformed shapes. Comparison with experimental values.

doi: 10.1103/PhysRevC.99.031304
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2018MA38      Bull.Rus.Acad.Sci.Phys. 82, 691 (2018)

M.L.Markova, T.M.Shneidman, N.V.Antonenko, T.Yu.Tretyakova

Effect of Coriolis Interaction on the Decay of Isotones with N = 149 and N = 153

NUCLEAR STRUCTURE 243,247Pu, 245,249Cm, 247,251Cf, 249,253Fm, 251,255No, 253,257Rf; calculated single-particle energy spectra, J, π, deformation of odd isotones with N=149, 153 using Two-Center Shell Model (TCSM) with K-mixing of the basis wave functions and inclusion of the Coriolis correction; deduced estimates for the B(E2) transitions to the gs, T1/2 of the isotones.

doi: 10.3103/S1062873818060187
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2018MA67      Chin.Phys.C 42, 124104 (2018)

E.V.Mardyban, T.M.Shneidman, E.A.Kolganova, R.V.Jolos, S.-G.Zhou

Analytical description of shape transition in nuclear alternating parity bands

NUCLEAR STRUCTURE 222,224,226,228Ra, 224,226,228,230,232,234,236Th, 230,232,234,236,238,240U, 238,240,242,244Pu; calculated parity splitting as a function of angular momentum, transitional dipole moments, E1 matrix element. Comparison with available data.

doi: 10.1088/1674-1137/42/12/124104
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2018SP02      Phys.Rev. C 97, 064319 (2018)

M.Spieker, S.Pascu, D.Bucurescu, T.M.Shneidman, T.Faestermann, R.Hertenberger, H.-F.Wirth, N.-V.Zamfir, A.Zilges

High-resolution (p, t) study of low-spin states in 240Pu: Octupole excitations, α clustering, and other structure features

NUCLEAR REACTIONS 242Pu(p, t), E=24 MeV; measured E(t), I(t), differential σ(θ), and total σ using the Q3D magnetic spectrograph of MLL-Munich. 240Pu; deduced levels, J, π, configurations, rotational band structure, moments of inertia of band members, origin of excited 0+ states, B(E1)/B(E2), summed B(E1) strength. Comparison with previous experimental values, and spdf IBM and α-cluster model theoretical predictions. Comparison of experimental σ(θ) values with coupled-channel distorted-wave Born approximation (DWBA) calculations with CHUCK3 code. 186W, 232Th(p, t), E=24 MeV; measured E(t), I(t); deduced levels, used for calibration of levels in 240Pu.

NUCLEAR STRUCTURE 238,240Pu, 226,228,230,232Th, 232,234,238U, 224,226,228Ra; analyzed experimental excitation energy, B(E1), B(E2) and B(E3) values; deduced octupole correlations, effect of negative-parity single particle states and potential role of double-octupole or α-clustering states on enhanced B(E1).

doi: 10.1103/PhysRevC.97.064319
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2440. Data from this article have been entered in the XUNDL database. For more information, click here.


2016BE37      Eur.Phys.J. A 52, 353 (2016)

A.N.Bezbakh, T.M.Shneidman, G.G.Adamian, N.V.Antonenko, S.-G.Zhou

Level densities of dinuclear systems

NUCLEAR STRUCTURE 266Hs, 272,280Ds[originated from 58Fe+208Pb, 64Ni+208Pb, 36S+244Pu]; calculated double nuclear system potential energy, quadrupole deformation, entropy, level density parameter using TCSM (Two-Center Shell Model).

doi: 10.1140/epja/i2016-16353-1
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2016CH30      Phys.Rev. C 94, 021301 (2016)

X.C.Chen, J.Zhao, C.Xu, H.Hua, T.M.Shneidman, S.G.Zhou, X.G.Wu, X.Q.Li, S.Q.Zhang, Z.H.Li, W.Y.Liang, J.Meng, F.R.Xu, B.Qi, Y.L.Ye, D.X.Jiang, Y.Y.Cheng, C.He, J.J.Sun, R.Han, C.Y.Niu, C.G.Li, P.J.Li, C.G.Wang, H.Y.Wu, Z.H.Li, H.Zhou, S.P.Hu, H.Q.Zhang, G.S.Li, C.Y.He, Y.Zheng, C.B.Li, H.W.Li, Y.H.Wu, P.W.Luo, J.Zhong

Evolution of octupole correlations in 123Ba

NUCLEAR REACTIONS 108Cd(19F, 3np), E=90 MeV; measured Eγ, Iγ, γγ-coin, γγ(θ)(DCO) at HI-13 tandem facility of the CIAE-Beijing. 123Ba; deduced high-spin levels, J, π, bands, multipolarity, B(E1)/B(E2) ratio. 123,125,145Ba; systematics of B(E1)/B(E2) ratios, theoretical and experimental energy displacements between the opposite-parity bands, octupole correlations, potential-energy surface contours in (β2, β3) plane. Comparison with predictions of multidimensionally-constrained relativistic mean-field (MDC-RMF) model, and cluster model based on dinuclear system.

doi: 10.1103/PhysRevC.94.021301
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2015BE10      Acta Phys.Pol. B46, 563 (2015)

A.N.Bezbakh, T.M.Shneidman, G.G.Adamian, N.V.Antonenko, S.-G.Zhou

Influence of Shell Structure on Level Densities of Superheavy Nuclei

RADIOACTIVITY 296,298,300120(α); calculated the intrinsic level density parameters; deduced dependences of the level density parameters on the mass and charge numbers as well as on the ground-state shell corrections. Comparison with phenomenological values.

doi: 10.5506/APhysPolB.46.563
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2015SH28      Phys.Rev. C 92, 034302 (2015)

T.M.Shneidman, G.G.Adamian, N.V.Antonenko, R.V.Jolos, S.-G.Zhou

Cluster approach to the structure of 240Pu

NUCLEAR STRUCTURE 240Pu; calculated levels, J, π, rotational bands, parity splitting, average mass asymmetry, B(E2), B(E1), transition dipole moment D0, D0/q0 ratio, B(E1)/B(E2) ratio. Positive parity 0+2 rotational band, alternating-parity rotational bands. Cluster approach, with shape deformation parameters and cluster degrees of freedom. Comparison with experimental data.

doi: 10.1103/PhysRevC.92.034302
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2014BE21      Eur.Phys.J. A 50, 97 (2014)

A.N.Bezbakh, T.M.Shneidman, G.G.Adamian, N.V.Antonenko

Level densities of heaviest nuclei

NUCLEAR STRUCTURE 162Dy, 166Er, 190Os, 196Pt, 200Hg, 228,230Th, 228Ra, 256,258,260Fm, 260,262,264No, 264,266,268Rf, 268,270,272Sg, 272,274,276Sg, 276,278,280Ds, 280,282,284Cn, 284,286,288Fl, 288,290,292Lv, 292,294,296Og, 296,298,300120, 300,302,304122, 304,306,308124, 308,310,312126, 312,314,316128, 316,318,320130; calculated level density, level-density parameters, ground-state shell corrections using two-center shell model single-particle spectra.

doi: 10.1140/epja/i2014-14097-6
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2012KU23      Eur.Phys.J. A 48, 112 (2012)

S.N.Kuklin, T.M.Shneidman, G.G.Adamian, N.V.Antonenko

Alpha-decay fine structures of U isotopes and systematics for isotopic chains of Po and Rn

RADIOACTIVITY 228Th(20O), 222Ra(14C), 232U(24Ne), 234U(26Ne), 236U(30Mg), 236Pu(28Mg), 238Pu(32Si); calculated T1/2. 184,186,188,190,192,194,196,198,200,202,204,206,208Po, 194,196,198,200,202,204,206,208,210Rn, 224,226,228,230,232,234,236,238U(α); calculated α spectroscopic factor for low-lying positive parity states, T1/2. Zero-point vibrations in the charge-asymmetry coordinate; compared to data.

NUCLEAR STRUCTURE 184,186,188,190,192,194,196,198,200,202,204,206,208,210,212,214,216,218Po, 194,196,198,200,202,204,206,208,210,212,214,216,218,220,222Rn; calculated α cluster spectroscopic factor using zero-point vibrations in the charge-asymmetry coordinate. Compared to data.

doi: 10.1140/epja/i2012-12112-8
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2012SH41      J.Phys.:Conf.Ser. 366, 012046 (2012)

T.M.Shneidman, A.V.Andreev, M.Sin, C.Massimi, G.Vannini, A.Ventura

Advanced fission models in nuclear data calculations

NUCLEAR REACTIONS 233U(n, F), E=0.5-20 MeV; calculated σ, fragments angular anisotropy using EMPIRE. Compared to data.

doi: 10.1088/1742-6596/366/1/012046
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2011SH06      Acta Phys.Pol. B42, 481 (2011)

T.M.Shneidman, G.G.Adamian, N.V.Antonenko, R.V.Jolos, W.Scheid

Multiple Reflection Asymmetric Type Band Structures in 220Th and Dinuclear Model

NUCLEAR STRUCTURE 220Th; analyzed lowest negative parity bands; calculated energies, J, π, parity splitting, B(E1)/B(E2). Dinuclear system model, comparison with experimental data.

doi: 10.5506/APhysPolB.42.481
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2011SH09      Eur.Phys.J. A 47, 34 (2011)

T.M.Shneidman, G.G.Adamian, N.V.Antonenko, R.V.Jolos, W.Scheid

Multiple reflection-asymmetric-type band structures in 220Th and dinuclear model

NUCLEAR STRUCTURE 220Th; calculated levels, J, π, B(E1), B(E2), rotational band, bands using dinuclear model with collective motion in mass asymmetry. Comparison with data.

doi: 10.1140/epja/i2011-11034-3
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2007AD23      Int.J.Mod.Phys. E16, 1021 (2007)

G.G.Adamian, N.V.Antonenko, R.V.Jolos, S.P.Ivanova, Yu.V.Palchikov, T.M.Shneidman, A.Andreev, W.Scheid

Nuclear Molecules

doi: 10.1142/S0218301307006472
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2007AD24      Phys.Atomic Nuclei 70, 1350 (2007)

G.G.Adamian, N.V.Antonenko, R.V.Jolos, Yu.V.Palchikov, T.M.Shneidman, W.Scheid

Nuclear structure in the dinuclear model with rotating clusters

NUCLEAR STRUCTURE 238U; calculated level energies, J, π using the dinuclear-system model.

doi: 10.1134/S1063778807080054
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2007SH30      Phys.Atomic Nuclei 70, 1452 (2007)

T.M.Shneidman, G.G.Adamian, N.V.Antonenko, R.V.Jolos

Cluster approach to the structure of nuclei with Z ≥ 96

NUCLEAR STRUCTURE Z>95; Th, U, Pu, cm, Cf, Fm, No, Rf, Sg; calculated energies of the states of yrast rotational bands within the dinuclear-system model. Compared results to available data.

doi: 10.1134/S1063778807080212
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2006SH19      Phys.Rev. C 74, 034316 (2006)

T.M.Shneidman, G.G.Adamian, N.V.Antonenko, R.V.Jolos

Possible alternative parity bands in the heaviest nuclei

NUCLEAR STRUCTURE 239,240U, 241,242,243,244,245Pu, 243,244,245,246,247,248Cm, 245,246,247,248,249,250Cf, 247,248,249,250,251,252Fm, 249,250,251,252,253,254No, 253,254,255,256Rf, 258Sg; calculated levels, J, π, rotational bands, transition dipole and quadrupole moments. Cluster model.

doi: 10.1103/PhysRevC.74.034316
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2005SH49      Eur.Phys.J. A 25, 387 (2005)

T.M.Shneidman, R.V.Jolos, R.Krucken, A.Aprahamian, D.Cline, J.R.Cooper, M.Cromaz, R.M.Clark, C.Hutter, A.O.Macchiavelli, W.Scheid, M.A.Stoyer, C.Y.Wu

E2 transitions between positive- and negative-parity states of the ground-state alternating-parity bands

RADIOACTIVITY 252Cf(SF); measured Doppler-shifted Eγ, Iγ, γγ-, (fragment)γ-coin. 144Ba deduced transitions T1/2, B(E2), transition dipole, quadrupole, and octupole moments for alternating-parity band. Gammasphere array, cluster-model analysis.

doi: 10.1140/epja/i2005-10134-y
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2004AD15      Nucl.Phys. A734, 433 (2004)

G.G.Adamian, N.V.Antonenko, R.V.Jolos, Yu.V.Palchikov, W.Scheid, T.M.Shneidman

Manifestation of cluster effects in the structure of medium mass and heavy nuclei

NUCLEAR STRUCTURE 144,146,148Ba, 146Ce; calculated alternating parity bands levels, J, π. 60Zn; calculated superdeformed band transitions branching ratios. 220,222,224,226Ra, 222,224,226,228,230,232Th, 234,236,238U; calculated dipole and quadrupole transition moments. Cluster model, comparisons with data.

doi: 10.1016/j.nuclphysa.2004.01.079
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2004AD19      Phys.Rev. C 69, 054310 (2004)

G.G.Adamian, N.V.Antonenko, R.V.Jolos, Yu.V.Palchikov, W.Scheid, T.M.Shneidman

Decay out of superdeformed bands in the mass region A ≈ 190 within a cluster approach

NUCLEAR STRUCTURE 190,192,194Hg, 192,194,196Pb; calculated superdeformed rotational band energies, decay-out probabilities. Cluster model.

doi: 10.1103/PhysRevC.69.054310
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2004AD30      Yad.Fiz. 67, 1729 (2004); Phys.Atomic Nuclei 67, 1701 (2004)

G.G.Adamian, N.V.Antonenko, R.V.Jolos, Yu.V.Palchikov, W.Scheid, T.M.Shneidman

Nuclear Structure with the Dinuclear Model

NUCLEAR STRUCTURE 232,234,236,238U, 223Ra; calculated rotational bands level energies. 226Ra; calculated B(E2). 60Zn; calculated ground-state band and superdeformed band levels, J, π. Dinuclear system approach.

doi: 10.1134/1.1806910
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2004AD31      Yad.Fiz. 67, 1737 (2004); Phys.Atomic Nuclei 67, 1709 (2004)

G.G.Adamian, N.V.Antonenko, R.V.Jolos, Yu.V.Palchikov, W.Scheid, T.M.Shneidman

Superdeformation as Cluster State

NUCLEAR STRUCTURE 190,192,194Hg; calculated normal-deformed and superdeformed bands levels, J, π, decay-out probabilities. Cluster approach.

doi: 10.1134/1.1806911
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2004AD41      Phys.Rev. C 70, 064318 (2004)

G.G.Adamian, N.V.Antonenko, R.V.Jolos, T.M.Shneidman

Cluster interpretation of parity doublet rotational bands in odd-mass nuclei

NUCLEAR STRUCTURE 151,153Pm, 153,155Eu, 221,223,225,227Ra, 223,225,227Ac, 223,229,231Th, 231Pa, 233U; calculated rotational bands level energies; 221,223,225,227Ra, 223,225,227Ac, 223,225Th, 229Pa; calculated dipole and quadrupole moments; deduced cluster features. Cluster model, comparisons with data.

doi: 10.1103/PhysRevC.70.064318
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2003AD31      Acta Phys.Pol. B34, 2147 (2003)

G.G.Adamian, A.V.Andreev, N.V.Antonenko, S.P.Ivanova, R.V.Jolos, W.Scheid, T.M.Shneidman

Dinuclear system phenomena in nuclear structure and nuclear reactions

NUCLEAR STRUCTURE 146Ba, 148Nd, 222Ra, 242Pu; calculated level energies for alternating-parity states. 194Hg, 194Pb, 234,236,238U, 236,239,240Pu, 240Am, 230,231,233Th; calculated cluster states quadrupole moments, related features. Dinuclear system approach, comparison with data.


2003AD32      Acta Phys.Pol. B34, 1729 (2003)

G.G.Adamian, N.V.Antonenko, R.V.Jolos, W.Scheid, T.M.Shneidman

Cluster features in reactions and structure of heavy nuclei

NUCLEAR STRUCTURE 220,222,224,226Ra, 222,224,226,228,230,232Th, 236,238U; calculated levels, J, π, transition moments; deduced cluster effects. Comparison with data.


2003AD34      Acta Phys.Hung.N.S. 18, 311 (2003)

G.G.Adamian, A.V.Andreev, N.V.Antonenko, S.P.Ivanova, N.Nenoff, W.Scheid, T.M.Shneidman

Cluster Interpretation of Highly Deformed Nuclear States

NUCLEAR STRUCTURE 194Hg, 194Pb, 236,238U, 236,239,240Pu, 240Am, 230,231,233Th, 234,236U; calculated superdeformed and hyperdeformed cluster configurations transition energies. Dinuclear system approach.

doi: 10.1556/APH.18.2003.2-4.32
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2003SH02      Phys.Rev. C 67, 014313 (2003)

T.M.Shneidman, G.G.Adamian, N.V.Antonenko, R.V.Jolos, W.Scheid

Cluster interpretation of properties of alternating parity bands in heavy nuclei

NUCLEAR STRUCTURE 222,224,226,228,230,232Th, 220,222,224,226Ra, 240,242Pu, 232,234,236,238U, 144,146,148Ba, 146,148Ce, 146,148Nd; calculated alternating parity bands levels, J, π, electric multipole transition moments. Cluster model, comparison with data.

doi: 10.1103/PhysRevC.67.014313
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2003SH04      Yad.Fiz. 66, 230 (2003); Phys.Atomic Nuclei 66, 206 (2003)

T.M.Shneidman, G.G.Adamian, N.V.Antonenko, S.P.Ivanova, R.V.Jolos, W.Scheid

Generation of Angular Momentum of Fission Fragments in a Cluster Model

RADIOACTIVITY 252Cf(SF); calculated fission fragments angular momentum for different decay channels. Dinuclear system concept, comparisons with data.

doi: 10.1134/1.1553492
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2002SH20      Phys.Rev. C65, 064302 (2002)

T.M.Shneidman, G.G.Adamian, N.V.Antonenko, S.P.Ivanova, R.V.Jolos, W.Scheid

Role of Bending Mode in Generation of Angular Momentum of Fission Fragments

RADIOACTIVITY 252Cf(SF); calculated fission fragments angular momenta vs neutron multiplicity, role of bending vibrations. Dinuclear system concept, comparison with data.

doi: 10.1103/PhysRevC.65.064302
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2000SH20      Nucl.Phys. A671, 119 (2000)

T.M.Shneidman, G.G.Adamian, N.V.Antonenko, S.P.Ivanova, W.Scheid

Relationship between Dinuclear Systems and Nuclei in Highly Deformed States

NUCLEAR STRUCTURE 76Kr, 152Dy, 232Th, 234U, 240Pu; calculated deformation parameters, potential energy vs mass asymmetry. 220,222,224,226,228Th; calculated octupole deformation. Dinuclear system approach.

doi: 10.1016/S0375-9474(99)00828-3
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2000SH44      Yad.Fiz. 63, No 10, 1805 (2000); Phys.Atomic Nuclei 63, 1716 (2000)

T.M.Shneidman, G.G.Adamian, N.V.Antonenko, S.P.Ivanova, W.Scheid

Clustering Aspects of Nuclei in Highly Deformed States

NUCLEAR STRUCTURE 152Dy, 240Pu, 234U, 232Th; calculated deformation, quadrupole and octupole moments, moments of inertia, potential energy vs cluster configuration; deduced superdeformed and hyperdeformed states features. Dinuclear system approach.

doi: 10.1134/1.1320140
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1998AN07      Phys.Rev. C57, 1832 (1998)

N.V.Antonenko, A.K.Nasirov, T.M.Shneidman, V.D.Toneev

Towards Exotic Nuclei Via Binary Reaction Mechanism

NUCLEAR REACTIONS 106Cd(58Ni, X), (54Fe, X), (56Fe, X), (40Ca, X), (64Zn, X), E not given; calculated yields; deduced light Sn isotopes production features. Microscopic transport model.

doi: 10.1103/PhysRevC.57.1832
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