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NSR database version of April 27, 2024.

Search: Author = S.N.Fedotkin

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2024MA02      Eur.Phys.J. A 60, 6 (2024)

A.G.Magner, A.I.Sanzhur, S.N.Fedotkin, A.I.Levon, U.V.Grygoriev, S.Shlomo

Pairing correlations within the micro-macroscopic approach for the level density

NUCLEAR STRUCTURE ^40,48Ca, ^52,54Fe, ⁵⁶Ni, ¹¹⁵Sn, ¹⁴⁴Sm, ²⁰⁸Pb; calculated level densities for low-energy states within the microscopic-macroscopic approach (MMA). Comparison with available data.

doi: 10.1140/epja/s10050-023-01222-1
Citations: PlumX Metrics

2023MA07      Phys.Rev. C 107, 024610 (2023)

A.G.Magner, S.N.Fedotkin, U.V.Grygoriev

Particle-number fluctuations near the critical point of nuclear matter

doi: 10.1103/PhysRevC.107.024610
Citations: PlumX Metrics

2023MA40      Iader.Fiz.Enerh. 24, 175 (2023)

A.G.Magner, A.I.Sanzhur, S.N.Fedotkin, A.I.Levon, U.V.Grygoriev, S.Shlomo

Nuclear level density in the statistical semiclassical micro-macroscopic approach

NUCLEAR STRUCTURE ^140,142,145Nd, ^144,150Sm, ¹⁶⁶Ho, ²⁰⁸Pb, ²³⁰Th, ²⁴⁰Pu; analyzed available data; deduced level density parameters using Least Mean-Square (LMS) fit.

doi: 10.15407/jnpae2023.03.175
Citations: PlumX Metrics

2022FE03      Phys.Rev. C 105, 024621 (2022)

S.N.Fedotkin, A.G.Magner, U.V.Grygoriev

Quantum statistics effects near the critical point in systems with different interparticle interactions

doi: 10.1103/PhysRevC.105.024621
Citations: PlumX Metrics

2022MA14      Nucl.Phys. A1021, 122423 (2022)

A.G.Magner, A.I.Sanzhur, S.N.Fedotkin, A.I.Levon, S.Shlomo

Level density within a micro-macroscopic approach

NUCLEAR STRUCTURE ²⁴⁰Pu, ¹⁵⁰Sm, ¹⁶⁶Ho; analyzed available data; deduced statistical level density for nucleonic system with a given energy E, particle number A and other integrals of motion in the micro-macroscopic approximation beyond the standard saddle-point method of the Fermi gas model.

doi: 10.1016/j.nuclphysa.2022.122423
Citations: PlumX Metrics

2021MA67      Phys.Rev. C 104, 044319 (2021)

A.G.Magner, A.I.Sanzhur, S.N.Fedotkin, A.I.Levon, S.Shlomo

Semiclassical shell-structure micro-macroscopic approach for the level density

NUCLEAR STRUCTURE ^144,148Sm, ¹⁶⁶Ho, ²⁰⁸Pb, ²³⁰Th; calculated level densities for low-energy states with different approximations, maximal mean errors in the statistical distribution of states; derived statistical level density as function of the entropy within the micro-macroscopic approximation (MMA) using the mixed micro- and grand-canonical ensembles beyond the standard saddle point method of the Fermi gas model, using mean-field semiclassical periodic-orbit theory. Comparison with experimental densities.

doi: 10.1103/PhysRevC.104.044319
Citations: PlumX Metrics

2021MA79      Int.J.Mod.Phys. E30, 2150092 (2021)

A.G.Magner, A.I.Sanzhur, S.N.Fedotkin, A.I.Levon, S.Shlomo

Shell-structure and asymmetry effects in level densities

NUCLEAR STRUCTURE ^{176,178,180,182,184,186,188,190,192,194,196,198,200}Pt; analyzed available data; deduced level densities within the semiclassical extended Thomas-Fermi and periodic-orbit theory beyond the Fermi-gas saddle-point method.

doi: 10.1142/S0218301321500920
Citations: PlumX Metrics

2019FE08      Phys.Rev. C 100, 054334 (2019)

S.N.Fedotkin, A.G.Magner, M.I.Gorenstein

Effects of quantum statistics near the critical point of nuclear matter

doi: 10.1103/PhysRevC.100.054334
Citations: PlumX Metrics

2012FE14      Iader.Fiz.Enerh. 13, 223 (2012)

S.N.Fedotkin

Atomic ionization at positron annihilation at β⁺-decay with taking into account screening

doi: 10.15407/jnpae
Citations: PlumX Metrics

2011FE10      Iader.Fiz.Enerh. 12, 335 (2011); Nuc.phys.atom.energ. 12, 335 (2011)

S.N.Fedotkin

Atomic ionization at annihilation of positrons emitted at β⁺-decay

2009KO37      Iader.Fiz.Enerh. 10, 123 (2009)

V.M.Kolomietz, S.N.Fedotkin

Atomic shell ionization and e⁺e^- pairs creation at the finite nuclear temperatures

doi: 10.15407/jnpae
Citations: PlumX Metrics

2008GZ01      Iader.Fiz.Enerh. 9 no.2, 7 (2008); Nuc.phys.atom.energ. 9, no.2, 7 (2008)

A.M.Gzhebinsky, A.G.Magner, S.N.Fedotkin

Semiclassical approach to the low-lying collective excitations in nuclei

NUCLEAR STRUCTURE A=10-220; calculated B(E2) for low-lying states in even-even nuclei, quadrupole energies, quadrupole energy weighted quadrupole sum rules, T_1/2.Extended Thomas-Fermi approach. Comparison with experimental data.

doi: 10.15407/jnpae
Citations: PlumX Metrics

2007FE20      Iader.Fiz.Enerh. 8 no.2, 16 (2007)

S.N.Fedotkin, V.A.Zheltonozhskii

Radiationless and inelastic processes contribution to the nuclear excitation at the positron-atomic electron annihilation

NUCLEAR REACTIONS ¹⁰³Rh, ¹⁰⁷Ag, ¹¹⁵In, ¹¹¹Cd, ¹⁷⁶Lu, ¹⁹⁷Au(e⁺, X), E= 1078-1482 keV; analyzed experimental data for reactions with non-monoenergetic positron sources, σ; deduced nonradiative and inelastic contributions to the total σ.

doi: 10.15407/jnpae
Citations: PlumX Metrics

2007GZ01      Phys.Rev. C 76, 064315 (2007)

A.M.Gzhebinsky, A.G.Magner, S.N.Fedotkin

Low-lying collective excitations of nuclei as a semiclassical response

NUCLEAR STRUCTURE A=20-220; calculated B(E2) values for low-lying states in even-even nuclei, quadrupole energies using Thomas-Fermi model, comparisons with experimental data.

doi: 10.1103/PhysRevC.76.064315
Citations: PlumX Metrics

2007MA34      Phys.Atomic Nuclei 70, 647 (2007)

A.G.Magner, A.M.Gzhebinsky, S.N.Fedotkin

Semiclassical Inertia of Nuclear Collective Dynamics

NUCLEAR STRUCTURE A < 220; calculated the transport coefficients for the low lying collective excitation in nuclei within the periodic-orbit theory in the extended Thomas-Fermi approach.

doi: 10.1134/S10637788070400059
Citations: PlumX Metrics

2007VI09      Bull.Rus.Acad.Sci.Phys. 71, 884 (2007); Izv.Akad.Nauk RAS, Ser.Fiz. 71, 912 (2007)

I.N.Vishnevsky, V.A.Zheltonozhsky, L.P.Katsubo, N.V.Strilchuk, P.N.Trifonov, S.N.Fedotkin

Excitation of ^{113m, 115m} In by positrons

NUCLEAR REACTIONS ^113,115In(e⁺, e⁺'), E=3.9 MeV; measured Eγ, Iγ from isomeric excitations.

doi: 10.3103/S1062873807060263
Citations: PlumX Metrics

2006FE15      Iader.Fiz.Enerh. 7 no.1, 39 (2006)

S.N.Fedotkin, V.A.Zheltonozhskii

Nuclear excitation at the positron annihilation taking into account the radiative corrections

NUCLEAR REACTIONS ¹¹⁵In(e⁺, e⁺'), E=89 keV; analyzed experimental data, σ; deduced contribution from nonradiative annihilation process.

doi: 10.15407/jnpae
Citations: PlumX Metrics

2006MA16      Prog.Theor.Phys.(Kyoto) 115, 523 (2006)

A.G.Magner, K.Arita, S.N.Fedotkin

Semiclassical Approach for Bifurcations in a Smooth Finite-Depth Potential

doi: 10.1143/PTP.115.523
Citations: PlumX Metrics

2005MB13      Iader.Fiz.Enerh. 6 no.1, 7 (2005); Nuc.phys.atom.energ. 6, no.1, 7 (2005)

A.G.Magner, A.N.Gzhebinsky, S.N.Fedotkin

Shells, orbits and transport coefficients of the nuclear collective dynamics

doi: 10.15407/jnpae
Citations: PlumX Metrics

1998FE13      Bull.Rus.Acad.Sci.Phys. 62, 730 (1998)

S.N.Fedotkin

Fluctuational Production of e⁺e^- Pairs at Monopole Transitions in Hot Nuclei

1994FE06      J.Phys.(London) G20, 607 (1994)

S.N.Fedotkin

Internal Positronium Production from Nuclear Transitions

NUCLEAR STRUCTURE ¹³C, ¹⁶O; calculated positronium production probability internal creation conversion coefficients in E1 transitions.

doi: 10.1088/0954-3899/20/4/008
Citations: PlumX Metrics

1993KO46      Yad.Fiz. 56, No 12, 92 (1993); Phys.Atomic Nuclei 56, 1672 (1993)

V.M.Kolomiets, S.N.Fedotkin

Conversion Transitions of Nuclei with Formation of Positronium

1991KO43      Izv.Akad.Nauk SSSR, Ser.Fiz. 55, 987 (1991); Bull.Acad.Sci.USSR, Phys.Ser. 55, No.5, 100 (1991)

V.M.Kolomiets, S.N.Fedotkin

Nuclear Excitation in Positron Annihilation Accompanied by Internal Conversion

NUCLEAR STRUCTURE ¹¹⁵In; calculated level excitation by e⁺e^- annihilation accompanied by internal conversion.

1990KO35      Yad.Fiz. 52, 426 (1990); Sov.J.Nucl.Phys. 52, 272 (1990)

V.M.Kolomiets, S.N.Fedotkin

Nuclear Excitation Accompanying Positron Scattering on an Atomic Shell and Annihilation with K Electrons

NUCLEAR STRUCTURE A ≈ 100; Z ≈ 50; ¹⁹⁷Au, ¹⁷⁶Lu; calculated effective σ for E1 excitation associated with K-electron annihilation of positron.

1989KO36      Izv.Akad.Nauk SSSR, Ser.Fiz. 53, 79 (1989); Bull.Acad.Sci.USSR, Phys.Ser. 53, No.1, 77 (1989)

V.M.Kolomiets, S.N.Fedotkin

Nonresonant Nuclear Excitation by Annihilation in β⁺-Decay

RADIOACTIVITY ⁴⁵Ti(β⁺); calculated nonresonant, resonant excitation mechanism probability ratio for ⁴⁵Sc. Positron annihilation with K-electron.

1988KO19      Izv.Akad.Nauk SSSR, Ser.Fiz. 52, 12 (1988); Bull.Acad.Sci.USSR, Phys.Ser. 52, No.1, 11 (1988)

V.M.Kolomiets, O.G.Puninsky, S.N.Fedotkin

Nuclear Excitation in Positron Annihilation by a K Electron in β⁺ Decay

RADIOACTIVITY ⁴⁵Ti(β⁺); calculated radiationless excitation (total probability)/(β⁺ emission probability).

1987LE31      Ukr.Fiz.Zh. 32, 1636 (1987)

A.I.Levon, S.N.Fedotkin

The Opposite Sign Anomaly of Orbital Nucleon Magnetism in the Nucleus

NUCLEAR REACTIONS ¹³⁰Te(α, 2n), E not given; measured γ(θ, H, t). ¹³²Xe level deduced g, quadrupole moment.

NUCLEAR STRUCTURE ^{112,111,113,114,115,116,117,119}Sn, ^{107,108,109,110,111,112,113,114,115}Cd, ^{123,124,125,127,128,126,129,130,131}Te, ^{129,130,131,132,133}Xe; calculated g.

1986FE05      Izv.Akad.Nauk SSSR, Ser.Fiz. 50, 106 (1986); Bull.Acad.Sci.USSR, Phys.Ser. 50, No.1, 103 (1986)

S.N.Fedotkin, V.M.Kolomiets

Statistical γ Transitions in Rotating Nuclei

NUCLEAR STRUCTURE A=170; calculated γ-transition spectral distributions vs Eγ.

1986LE15      Yad.Fiz. 43, 1416 (1986)

A.I.Levon, S.N.Fedotkin, A.I.Vdovin

Magnetic Moments of Odd Spherical Nuclei

NUCLEAR STRUCTURE ^{111,113,115,117,119}Sn, ^{107,109,111,113,115}Cd, ^{123,125,127,131}Te, ^129,131,133Xe, ^115,117Sb, ¹³⁹La, ¹⁴¹Pr, ¹⁴³Pm, ¹⁴⁵Eu, ^89,91Y, ⁹³Nb, ⁹⁹Tc, ^{195,197,199,201,205}Tl; calculated g. Quasiparticle-phonon model.

1984GO12      Zh.Eksp.Teor.Fiz. 87, 3 (1984)

B.I.Gorbachev, A.I.Levon, O.F.Nemets, S.N.Fedotkin, V.A.Stepanenko

Magnetic Moments of Isomer States in ¹⁴¹Pr and ¹⁴³Pm and the Paramagnetism of Promethium and Praseodymium

NUCLEAR REACTIONS ¹³⁹La, ¹⁴¹Pr(α, 2n), E=27 MeV; measured γ(θ, H), γ(θ, H, t); deduced paramagnetic corrections. ¹⁴¹Pr, ¹⁴³Pm deduced isomer state g.

1983FE03      Phys.Lett. 121B, 15 (1983)

S.N.Fedotkin, I.N.Mikhailov, R.G.Nazmitdinov

The Microscopic Description of the Isovector Dipole Excitations at High Spins

NUCLEAR STRUCTURE ¹⁵²Sm, ¹⁶⁰Yb, ¹⁸⁶Os; calculated γ-strength function. High spins, isovector dipole deexcitation, microscopic model.

doi: 10.1016/0370-2693(83)90192-2
Citations: PlumX Metrics

1983LE23      Yad.Fiz. 38, 577 (1983)

A.I.Levon, S.N.Fedotkin, Chan Zui Khyung

Description of Magnetic Moments of Nuclei ¹¹⁷Sb, ¹¹⁵Sb, ¹¹³Sn in the Quasi-Particle - Phonon Model

NUCLEAR STRUCTURE ^117,115,113Sb; calculated isomer level, μ, B(E3), g, spectroscopic factors. Quasiparticle-phonon model.

1983MI16      Yad.Fiz. 38, 24 (1983)

I.N.Mikhailov, R.G.Nazmitdinov, S.N.Fedotkin

Strength Function of Isovector Dipole Excitations in Fast Rotating Nuclei

NUCLEAR STRUCTURE ¹⁵²Sm, ¹⁸⁰Os, ¹⁶⁰Yb; calculated energy surfaces, GDR resonance properties. Thermodynamical approximation, cranking model plus RPA, fast rotating nuclei, strength function method.