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Search: Author = M.S.Onegin

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2023ON01      Phys.Atomic Nuclei 86, 1795 (2023)

M.S.Onegin

Validation of ENDF/B-7.1 Library for PIK-04 Critical Experiments

NUCLEAR REACTIONS ²³⁵U(n, X), E<20 MeV; calculated the effective neutron multiplication factors for critical assemblies of PIK-04 series, which represent circular cores with PIK type fuel elements immersed in water using the MCNP-6.1 and SCALE-6.2.4 codes with the ENDF/B-7.1 nuclear data library.

doi: 10.1134/S1063778823080112
Citations: PlumX Metrics

2022ON03      Bull.Rus.Acad.Sci.Phys. 86, 1406 (2022)

M.S.Onegin

Analysis of Neutron-Induced Fission Cross Sections of Pb Isotopes near the Closed Neutron Shell

NUCLEAR REACTIONS ^{204,206,207,208}Pb(n, F), E=30-180 MeV; analyzed available data; deduced fission barrier values for Pb isotopes near closed neutron shell using TALYS calculations. Comparison with RIPL-III recommended values.

doi: 10.3103/S1062873822110181
Citations: PlumX Metrics

2022ON04      Phys.Atomic Nuclei 85, 903 (2022)

M.S.Onegin

Excitation of 1⁺ Levels in Inelastic Proton Scattering off ²⁸Si Nuclei

NUCLEAR REACTIONS ²⁸Si(p, p'), (e^-, e^-'), E<201 MeV; analyzed available data; deduced σ(θ), energy levels, J, π, B(M1), nucleon-nucleon interaction potential on the basis of the shell model by means of NuShellX@MSU software.

doi: 10.1134/S1063778823010416
Citations: PlumX Metrics

2020ON02      Ann.Nucl.Energy 84, 1518 (2020)

M.S.Onegin

Calculating the Angular Distribution of Fragments in the Near-Threshold Fissioning of ²³⁴U by Neutrons

NUCLEAR REACTIONS ²³⁴U(n, F), E=0.2-0.9 MeV; calculated σ, σ(θ) of fragments are calculated with the Hauser-Feshbach model using the TALYS code.

doi: 10.3103/S1062873820120308
Citations: PlumX Metrics

2015PL03      Bull.Rus.Acad.Sci.Phys. 79, 838 (2015); Izv.Akad.Nauk RAS, Ser.Fiz 79, 930 (2015)

A.V.Plavko, M.S.Onegin, V.I.Kudriashov

Polarization transfer coefficients and partial differential cross sections for the ¹⁶O(p(pol), p(pol)') ¹⁶O (4^-, T = 0 and 1) reactions at intermediate energies

NUCLEAR REACTIONS ¹⁶O(polarized p, polarized p')¹⁶O, E=200-350 MeV; analyzed available data; deduced isospin dependence of the spin-orbit amplitude strength. Comparison with calculations performed with impulse approximations using the distorted wave method in several theoretical models.

doi: 10.3103/S1062873815070187
Citations: PlumX Metrics

2014PL05      Bull.Rus.Acad.Sci.Phys. 78, 663 (2014); Izv.Akad.Nauk RAS, Ser.Fiz 78, 881 (2014)

A.V.Plavko, M.S.Onegin, V.I.Kudriashov

Comparing spin observables in the reaction ¹²C(p(pol), p(pol)')¹²C at 100-500 MeV with various distorted-wave impulse approximations

NUCLEAR REACTIONS ¹²C(polarized p, polarized p'), E=100-500 MeV; analyzed available data; calculated scattering angle dependence on spin transfer coefficients. DWBA91 and LEA programs, comparison with experimental data.

doi: 10.3103/S106287381407020X
Citations: PlumX Metrics

2014SI16      Nucl.Data Sheets 119, 331 (2014)

V.D.Simutkin, S.Pomp, J.Blomgren, M.Osterlund, R.Bevilacqua, P.Andersson, I.V.Ryzhov, G.A.Tutin, S.G.Yavshits, L.A.Vaishnene, M.S.Onegin, J.P.Meulders, R.Prieels

Experimental Neutron-induced Fission Fragment Mass Yields of ²³²Th and ²³⁸U at Energies from 10 to 33 MeV

NUCLEAR REACTIONS ²³²Th, ²³⁸U(n, F), E=10-33 MeV; measured fission fragments; deduced yields, fission probability; calculated yields using TALYS-1.4 and GEF 2012/2.4 codes.

doi: 10.1016/j.nds.2014.08.091
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23119.

2013PL02      Bull.Rus.Acad.Sci.Phys. 77, 871 (2013); Izv.Akad.Nauk RAS, Ser.Fiz 77, 957 (2013)

A.V.Plavko, M.S.Onegin, V.I.Kudriashov

Relations between measured and calculated spin observables in inelastic scattering of polarized protons for excitation of the 1⁺, T = 0 state in ¹²C

NUCLEAR REACTIONS ¹²C(polarized p, p'), E=200, 400 MeV; calculated spin transfer coefficients, difference functions. Comparison with available data.

doi: 10.3103/S1062873813070186
Citations: PlumX Metrics

2012ON01      Bull.Rus.Acad.Sci.Phys. 76, 1081 (2012); Izv.Akad.Nauk RAS, Ser.Fiz 76, 1206 (2012)

M.S.Onegin, M.S.Yudkevich

Energy dependence of the calculated yield of ^176mLu isomer in reaction ¹⁷⁵Lu(n, γ)

NUCLEAR REACTIONS ¹⁷⁵Lu(n, γ), E<10 MeV; calculated yield of ^176mLu isomer. Huizenga-Vandenbosch and Hauser-Feshbach models, comparison with TALYS nuclear model code calculations, ENDF/B-VII library.

doi: 10.3103/S1062873812040272
Citations: PlumX Metrics

2012SE06      Phys.Rev. C 86, 025802 (2012)

A.P.Serebrov, O.M.Zherebtsov, A.K.Fomin, M.S.Onegin

Ultracold-neutron trap as a tool to search for dark matter interacting with long-range forces

doi: 10.1103/PhysRevC.86.025802
Citations: PlumX Metrics

2011RY04      Phys.Rev. C 83, 054603 (2011)

I.V.Ryzhov, S.G.Yavshits, G.A.Tutin, N.V.Kovalev, A.V.Saulski, N.A.Kudryashev, M.S.Onegin, L.A.Vaishnene, Yu.A.Gavrikov, O.T.Grudzevich, V.D.Simutkin, S.Pomp, J.Blomgren, M.Osterlund, P.Andersson, R.Bevilacqua, J.P.Meulders, R.Prieels

Fragment-mass distributions in neutron-induced fission of ²³²Th and ²³⁸U at 33, 45, and 60 MeV

NUCLEAR REACTIONS ²³²Th, ²³⁸U(n, F), E=32.8, 45.3, 59.9 MeV; measured fission fragment spectra; deduced fragment-mass distributions. Comparison with model calculations with the intermediate-energy nuclear reaction code MCFX, and with previous experimental data.

doi: 10.1103/PhysRevC.83.054603
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23119.

2011RY09      J.Korean Phys.Soc. 59, 1864s (2011)

I.V.Ryzhov, G.A.Tutin, V.D.Simutkin, J.Blomgren, S.POMP, M.Osterlund, P.Andersson, R.Bevilacqua, M.S.Onegin, L.A.Vaishnene, J.P.Meulders, R.Prieels

Measurement of Fragment Mass Yields in Neutron-Induced Fission of ²³²Th and ²³⁸U at 33, 45, and 60 MeV

NUCLEAR REACTIONS ²³²Th, ²³⁸U(n, F), E=32.8, 45.3, 59.9 MeV; measured fission fragments using Frisch-gridded ionization chamber and TOF; deduced pre-neutron fragment-mass yields, σ; calculated fragment yields using TALYS. Compared with evaluations.

doi: 10.3938/jkps.59.1864
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23119.

2007PL03      Bull.Rus.Acad.Sci.Phys. 71, 852 (2007); Izv.Akad.Nauk RAS, Ser.Fiz. 71, 879 (2007)

A.V.Plavko, M.S.Onegin, V.I.Kudriashov

Polarization observables P + A and (P + A)σ in 200-MeV proton inelastic scattering

doi: 10.3103/S1062873807060202
Citations: PlumX Metrics

2006ON03      Phys.Atomic Nuclei 69, 581 (2006); Yad.Fiz. 69, 605 (2006)

M.S.Onegin

Role of Antisymmetrization in Describing the Excitation of the 1⁺, T = 1 Level in the ¹²C Nucleus by Polarized Protons

NUCLEAR REACTIONS ¹²C(polarized p, p), (polarized p, p'), E ≈ 200, 400 MeV; analyzed σ(θ), Ay(θ), other polarization observables; deduced role of antisymmetrization.

doi: 10.1134/S1063778806040041
Citations: PlumX Metrics

2006PE33      Phys.Rev.C 74, 064610 (2006)

Yu.V.Petrov, A.I.Nazarov, M.S.Onegin, V.Yu.Petrov, E.G.Sakhnovsky

Natural nuclear reactor at Oklo and variation of fundamental constants: Computation of neutronics of a fresh core

NUCLEAR REACTIONS ¹⁴⁹Sm(n, γ), E=thermal; calculated capture σ, dependence on resonance parameters; deduced limit on change in fine structure constant. Model of natural reactor core.

doi: 10.1103/PhysRevC.74.064610
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2006PL04      Phys.Atomic Nuclei 69, 189 (2006); Yad.Fiz. 69, 211 (2006)

A.V.Plavko, M.S.Onegin

Differential Analyzing Power in pp' Scattering on a ²⁸Si Nucleus in the Case of the Excitation of High-Spin Particle-Hole States

NUCLEAR REACTIONS ²⁸Si(p, p'), E=65, 100, 180, 500 MeV; calculated Ay(E, θ), σ(E, θ); deduced structure effects. Comparison with data.

doi: 10.1134/S1063778806020037
Citations: PlumX Metrics

2005RY03      Nucl.Phys. A760, 19 (2005)

I.V.Ryzhov, M.S.Onegin, G.A.Tutin, J.Blomgren, N.Olsson, A.V.Prokofiev, P.-U.Renberg

Influence of multichance fission on fragment angular anisotropy in the ²³²Th(n, f) and ²³⁸U(n, f) reactions at intermediate energies

NUCLEAR REACTIONS ²³²Th, ²³⁸U(n, F), E=21-95 MeV; measured fission fragments angular distributions, anisotropy. ²³²Th, ²³⁸U(n, F), E=0-95 MeV; ²³²Th, ²³⁸U(n, 2n), (n, 3n), (n, xnF), E=0-20 MeV; calculated σ, fission fragments angular anisotropy. ²³⁸U(n, pX), E=25-65 MeV; calculated σ. Multichance fission, saddle-point statistical model analysis.

doi: 10.1016/j.nuclphysa.2005.06.003
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset22898.

2004EG03      At.Energ. 97, 40 (2004); At.Energy 97, 481 (2004)

A.I.Egorov, M.S.Onegin, V.V.Pashuk

Neutron yield from water-cooled lead targets

NUCLEAR REACTIONS W, Pb(p, nX), E ≈ 0.3-1.5 GeV; calculated neutron yields. Comparison with data.

doi: 10.1023/B:ATEN.0000045701.62540.4a
Citations: PlumX Metrics

2004ON04      Eur.Phys.J. A 22, 61 (2004)

M.S.Onegin, A.V.Plavko

Neutron transition densities for the 2⁺ -8⁺ multiplet of states in ⁹⁰Zr

NUCLEAR REACTIONS ⁹⁰Zr(polarized p, p), (polarized p, p'), E=400 MeV; analyzed σ(θ), Ay(θ). ⁹⁰Zr levels deduced neutron transition densities.

doi: 10.1140/epja/i2004-10013-1
Citations: PlumX Metrics

1995PL05      Bull.Rus.Acad.Sci.Phys. 59, 808 (1995)

A.V.Plavko, M.S.Onegin, V.I.Kudryashov

Effective Proton-Nucleus Interaction at (pp') Scattering in the Range E(p) = 20-200 MeV

NUCLEAR REACTIONS ²⁸Si(polarized p, p'), E=20-180 MeV; analyzed σ(θ), analyzing power vs θ. DWBA, microscopic approach, phenomenological, folding model potentials, effective particle-role interaction.

1995VO15      At.Energ. 79, 46 (1995); At.Energy 79, 456 (1995)

I.B.Vodopyanov, M.S.Onegin, V.V.Pashuk, M.V.Stabnikov

Formation of K-Vacancies in Thick Targets by Irradiation with Charged Particles

NUCLEAR REACTIONS U, Pb(p, X), E=1 GeV; measured K-vacancies associated X-ray yield vs target thickness.

ATOMIC PHYSICS U, Pb(p, X), E=1 GeV; measured K-vacancies associated X-ray yield vs target thickness.

1994PL03      Bull.Rus.Acad.Sci.Phys. 58, 791 (1994)

A.V.Plavko, M.S.Onegin, V.I.Kudryashov, C.Olmer, P.Schwandt

Density Effects in (pp') Scattering from Some Light Nuclei at Intermediate and Low Proton Energy

NUCLEAR REACTIONS ²⁸Si(polarized p, p'), E=20-135 MeV; measured σ(θ), analyzing power vs θ; deduced density effects related features. Comparison, analysis of other reactions, data.

1989PL11      Ukr.Fiz.Zh. 34, 1619 (1989)

A.V.Plavko, M.S.Onegin, O.A.Ponkratenko

Empirical Shell Model in the (e, e')-, (p, p')- and (p(pol), p')-Scattering Processes

NUCLEAR REACTIONS ⁴⁰Ca(polarized p, p'), E=20.3 MeV; calculated σ(θ), A(θ). ^90,92Zr(p, p'), E=20 MeV; calculated σ(θ). ^90,92Zr(polarized p, p'), E=160 MeV; calculated A(θ). DWBA, (e, e') data analysis.

1988PL05      Ukr.Fiz.Zh. 33, 1125 (1988)

A.V.Plavko, M.S.Onegin, O.A.Ponkratenko

The Role of Spin-Orbit Interaction in Collective and Microscopic Analyses of (p(pol), p') Scattering

NUCLEAR REACTIONS ⁹⁰Zr, ⁹²Mo(polarized p, p'), E ≈ 20 MeV; calculated analyzing power vs θ; deduced spin-orbit interaction role. Coupled-channels analysis, distorted-wave approximation.

1986PL04      Izv.Akad.Nauk SSSR, Ser.Fiz. 50, 949 (1986); Bull.Acad.Sci.USSR, Phys.Ser. 50, No.5, 117 (1986)

A.V.Plavko, M.S.Onegin, O.A.Ponkratenko

Nuclear Transition Densities and Binding of (p(pol)p') Processes at E(p) ≈ 20 MeV and (pp') at E(p) ≈ 1 GeV

NUCLEAR REACTIONS ⁴⁰Ca, ^90,92Zr(polarized p, p'), E ≈ 20 MeV; calculated analyzing power vs θ. ^40,42Ca(polarized p, p'), E ≈ 1 GeV; calculated σ(θ). Collective model.

1985PL02      Izv.Akad.Nauk SSSR, Ser.Fiz. 49, 116 (1985); Bull.Acad.Sci.USSR, Phys.Ser. 49, No.1, 122 (1985)

A.V.Plavko, R.M.Lombar, M.S.Onegin

Structure of the Nuclei ⁸⁹Y, ⁹⁰Zr and the Spin Effects in the Processes (p(pol), p')

NUCLEAR REACTIONS ⁸⁹Y, ⁹⁰Zr(polarized p, p'), E ≈ 20 MeV; measured σ(θ), analyzing power vs θ; deduced spin-flip, nonspin-flip contributions. Macroscopic, microscopic coupled-channels, DWBA analyses.