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NSR database version of April 27, 2024.

Search: Author = M.I.Svirin

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2012SV03      Phys.Atomic Nuclei 75, 1466 (2012); Yad.Fiz. 75, 1544 (2012)

M.I.Svirin

Systematics of the mean energy and the mean multiplicity of prompt neutrons originating from ²³²Th fission

NUCLEAR REACTIONS ²³²Th(n, 2n), (n, F), E<20 MeV; calculated neutron multiplicity, fission σ, neutron spectra.

doi: 10.1134/S1063778812110018X
Citations: PlumX Metrics

2010AL18      Phys.Atomic Nuclei 73, 1487 (2010); Yad.Fiz. 73, 1533 (2010)

A.A.Alekseev, A.A.Bergman, A.I.Berlev, E.A.Koptelov, B.F.Samylin, M.I.Svirin, A.M.Trufanov, B.I.Fursov, V.S.Shorin

Cross section for the subbarrier fission of ²⁴⁴Cm

NUCLEAR REACTIONS ²⁴⁴Cm, ²⁴⁰Pu(n, F), E=0.07 eV - 20 KeV; measured reaction fragments; deduced fission σ, resonance parameters, level spacings, ENDF/B-VII defficiencies.

doi: 10.1134/S1063778810090036
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41524.

2008SV01      Phys.Atomic Nuclei 71, 1694 (2008); Yad.Fiz. 71, 1725 (2008)

M.I.Svirin

Shape of spectra and mean energies of prompt fission neutrons from ²³⁷Np fission induced by primary neutrons of energy in the range E_n < 20 MeV

NUCLEAR REACTIONS ²³⁷Np(N, F), E=14.7 MeV; analyzed prompt neutron spectra; deduced an excess of soft neutrons.

doi: 10.1134/S1063778808100050
Citations: PlumX Metrics

2007SV02      Phys.Atomic Nuclei 70, 626 (2007); Yad.Fiz. 70, 656 (2007)

M.I.Svirin, A.M.Trufanov

Mean Energies of Prompt Fission Neutrons in the Neutron-Induced Fission of ²³⁵U at Primary Energies in the Range E_n < 20 MeV

NUCLEAR REACTIONS ²³⁵U(n, n'F), E < 20 MeV; analyzed energy spectra of accompanying neutrons in induced fission. Compared data to model calculations.

doi: 10.1134/S1063778807040035
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41110.

2006SV03      Physics of Part.and Nuclei 37, 475 (2006)

M.I.Svirin

Testing Basic Phenomenological Models of Nuclear Level Density

doi: 10.1134/S1063779606040010
Citations: PlumX Metrics

2004LO09      Yad.Fiz. 67, 914 (2004); Phys.Atomic Nuclei 67, 890 (2004)

G.N.Lovchikova, A.M.Trufanov, M.I.Svirin, V.A.Vinogradov

Neutron Emission from the Reaction ²³²Th(n, xn'f)

NUCLEAR REACTIONS ²³²Th(n, n'F), E=14.6, 17.7 MeV; measured En, neutron yields; deduced emission mechanism features. Comparison with previous results, model predictions.

doi: 10.1134/1.1755381
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41446.

2004LO13      Yad.Fiz. 67, 1270 (2004); Phys.Atomic Nuclei 67, 1246 (2004)

G.N.Lovchikova, A.M.Trufanov, M.I.Svirin, V.A.Vinogradov, A.V.Polyakov

Spectra and Mean Energies of Prompt Neutrons from ²³⁸U Fission Induced by Primary Neutrons of Energy in the Region E_n < 20 MeV

NUCLEAR REACTIONS ²³⁸U(n, F), E < 20 MeV; measured prompt fission neutron spectra, yields. Comparison with model predictions.

doi: 10.1134/1.1777281
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41447.

2001SV04      Yad.Fiz. 64, No 9, 1660 (2001); Phys.Atomic Nuclei 64, 1581 (2001)

M.I.Svirin

Statistical and Dynamical Aspects of the Description of the Cross Section for ²³⁸U Fission Induced by 1- to 55-MeV Neutrons

NUCLEAR REACTIONS ²³⁸U(n, F), E=1-55 MeV; calculated fission σ; deduced coefficient of nuclear friction. Statistical and dynamical approaches compared.

doi: 10.1134/1.1409499
Citations: PlumX Metrics

2001TR02      Yad.Fiz. 64, No 1, 3 (2001); Phys.Atomic Nuclei 64, 1 (2001)

A.M.Trufanov, G.N.Lovchikova, M.I.Svirin, A.V.Polyakov, V.A.Vinogradov, V.D.Dmitriev, G.S.Boikov

Investigation of the Spectra of Neutrons Originating from ²³⁸U Fission Induced by 5.0- and 13.2-MeV Neutrons

NUCLEAR REACTIONS ²³⁸U(n, F), E=5, 13.2 MeV; measured prompt neutron spectra. Comparisons with model predictions, previous results.

doi: 10.1134/1.1344936
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41450.

1997SV01      Yad.Fiz. 60, No 5, 818 (1997); Phys.Atomic Nuclei 60, 727 (1997)

M.I.Svirin, G.N.Lovchikova, A.M.Trufanov

Features of the Spectra of Neutrons Accompanying the Neutron-Induced Emission Fission of ²³⁸U

NUCLEAR REACTIONS ²³⁸U(n, F), E=2.9, 14.7, 16, 17.7 MeV; analyzed neutron spectra, differential yield following fission; deduced two-step mechanism role in post fission neutrons emission at high excitation of compound system. Exciton model, preequilibrium emission.

1996SM06      Yad.Fiz. 59, No 11, 1934 (1996); Phys.Atomic Nuclei 59, 1865 (1996)

G.N.Smirenkin, G.N.Lovchikova, A.M.Trufanov, M.I.Svirin, A.V.Polyakov, V.A.Vinogradov, V.D.Dmitriev, G.S.Boykov

Energy Spectra of Neutrons Accompanying the Emission Fission of ²³⁸U

NUCLEAR REACTIONS ²³⁸U(n, F), E=16, 17.7 MeV; measured fission neutron spectra; deduced fissile nucleus nonequilibrium decay, other processes evidence.

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41461.

1996SV01      Yad.Fiz. 59, No 6, 965 (1996); Phys.Atomic Nuclei 59, 923 (1996)

M.I.Svirin, G.N.Smirenkin, F.-J.Hambsch

Spectra of Fission Neutrons and Density of Nuclear Levels: Testing a generalized superfluid model

RADIOACTIVITY ²⁵²Cf(SF); analyzed prompt neutron spectra; deduced generralized superfluid model level density predictions related features.

1994BO48      Yad.Fiz. 57, No 12, 2126 (1994); Phys.Atomic Nuclei 57, 2047 (1994)

G.S.Boikov, V.D.Dmitriev, M.I.Svirin, G.I.Smirenkin

Neutron Spectra in ²³⁷Np Fission Induced by Neutrons of Energy 2.9 and 14.7 MeV

NUCLEAR REACTIONS ²³⁷Np(n, F), E=2-9, 14.7 MeV; measured fission neutron spectra; deduced average energy, yield. Tof technique.

1994BO53      Ann.Nucl.Energy 21, 585 (1994)

G.S.Boikov, V.D.Dmitriev, G.A.Kudyaev, V.M.Maslov, Yu.B.Ostapenko, M.I.Svirin, G.N.Smirenkin

Peculiarities in the Neutron Spectra Accompanying Neutron-Induced Emission Fission of Actinide Nuclei

NUCLEAR REACTIONS ²³²Th, ^235,238U, ²³⁷Np(n, F), E=2.9-14.7 MeV; measured neutron spectra following fission; deduced nonequilibrium neutron emission evidence. Statistical model with, without nonequilibrium emission.

doi: 10.1016/0306-4549(94)90068-X
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41171.

1993KU03      Yad.Fiz. 56, No 1, 51 (1993); Phys.Atomic Nuclei 56, 29 (1993)

G.A.Kudyaev, Yu.B.Ostapenko, V.V.Pashkevich, M.I.Svirin, G.N.Smirenkin

Description and Analysis of the Chance Structure in the Cross Section for Neutron-Induced Emission Fission of ^233-238U

NUCLEAR REACTIONS ^{233,235,238,236,234,232}U(n, F), E ≤ 20 MeV; ²³⁸U(n, 2n'), E ≤ 20 MeV; analyzed fission σ(E). ²³⁹U deduced fission mechanism.

1992RA09      Yad.Fiz. 55, 310 (1992); Sov.J.Nucl.Phys. 55, 169 (1992)

E.M.Rastopchin, M.I.Svirin, G.N.Smirenkin

Rotational-Mode Component of the Density of Levels of Nuclei with A ≤ 150

NUCLEAR STRUCTURE A ≤ 150; analyzed data; deduced level density determination related problems. Generalized superfluid model, rotational mode component.

1991BO17      Yad.Fiz. 53, 628 (1991); Sov.J.Nucl.Phys. 53, 392 (1991)

G.S.Boikov, V.D.Dmitriev, G.A.Kudyaev, Yu.B.Ostapenko, M.I.Svirin, G.N.Smirenkin

Spectrum of Neutrons Accompanying Fission of ²³²Th, ²³⁵U, and ²³⁸U by 2.9-MeV and 14.7-MeV Neutrons (Below and Above the Threshold of Emission Fission)

NUCLEAR REACTIONS ²³²Th, ^235,238U(n, F), E=2.9, 14.7 MeV; measured fission neutron spectra; deduced emission mechanism features.

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41110.

1991BO25      Z.Phys. A340, 79 (1991)

G.S.Boikov, V.D.Dmitriev, G.A.Kudyaev, Yu.B.Ostapenko, M.I.Svirin, G.N.Smirenkin

New Data on Prefission Neutrons

NUCLEAR REACTIONS ²³²Th, ^235,238U(n, F), E=2.9, 14.7 MeV; measured neutron spectra following fission; deduced fission dynamics role.

doi: 10.1007/BF01284483
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41110.

1991RA17      Yad.Fiz. 53, 1200 (1991); Sov.J.Nucl.Phys. 53, 741 (1991)

E.M.Rastopchin, S.I.Mulgin, Yu.B.Ostapenko, V.V.Pashkevich, M.I.Svirin, G.N.Smirenkin

Statistical and Dynamical Aspects of Preactinide Fissility

NUCLEAR STRUCTURE ^{186,187,188,191}Os, ^193,196,197Pt, ^{198,199,200,202}Hg, ^{206,205,207,208}Pb, ¹⁷³Lu, ²¹²Po; A=160-220; analyzed fission data; deduced fissility features.

NUCLEAR REACTIONS Ag(³He, F), E not given; ¹⁹⁷Au(α, F), E=32.6-47.5 MeV; analyzed fission data; deduced fissility features.

1990BO55      At.Energ. 69, 23 (1990); Sov.At.Energy 69, 577 (1991)

G.S.Boikov, V.D.Dmitriev, G.A.Kudyaev, M.I.Svirin, G.N.Smirenkin

Neutron Spectra in ²³⁵U Fission Caused by 2.9- and 14.7-MeV Neutron

NUCLEAR REACTIONS ²³⁵U(n, F), E=2.9, 14.7 MeV; measured neutron spectra following fission; deduced emission mechanisms.

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41094.

1990RA31      Yad.Fiz. 52, 1258 (1990); Sov.J.Nucl.Phys. 52, 799 (1990)

E.M.Rastopchin, M.I.Svirin, G.N.Smirenkin

Tests of the Basic Phenomenological Models of the Nuclear Level Density

NUCLEAR STRUCTURE A ≈ 180-230; calculated level density with respect to measured values. ¹⁰⁹Cd, ²⁰⁸Pb, ¹⁸¹W; calculated level density vs energy. A=20-270; analyzed data; deduced models adequacy. Fermi gas, generalized superfluid models.

NUCLEAR REACTIONS ¹⁸⁵Re(α, F), E not given; analyzed data. ¹⁸⁹Ir deduced fisslity vs excitation energy. Fermi gas, generalized superfluid models.

1990TR04      Yad.Fiz. 51, 318 (1990); Sov.J.Nucl.Phys. 51, 202 (1990)

A.M.Trufanov, G.N.Lovchikova, M.I.Svirin, O.A.Salnikov

Neutron Spectra from the Reactions ⁹¹Zr(p, n)⁹¹Nb and ⁹⁴Zr(p, n)⁹⁴Nb and the Nuclear Level Density

NUCLEAR REACTIONS, ICPND ^91,94Zr(p, n), E=6-9 MeV; measured σ(θ, E(n)), σ(θ), σ. ^91,94Nb deduced absolute level density. Back-shifted Fermi gas model.

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0597.

1989RA05      Yad.Fiz. 49, 24 (1989)

E.M.Rastopchin, Yu.B.Ostapenko, M.I.Svirin, G.N.Smirenkin

Nuclear Surface Effect on Level Density and Fusion Probability

NUCLEAR STRUCTURE ¹⁷⁹Ta; analyzed neutron resonance level density, fissionability; deduced asymptotic parameter role.

1988KU04      Yad.Fiz. 47, 341 (1988)

G.A.Kudyaev, Yu.B.Ostapenko, M.I.Svirin, G.N.Smirenkin

A Possibility of Determination of the Level Density Asymptotic Parameter

NUCLEAR STRUCTURE ²¹³At, ^212,210,208Po, ²⁰⁷Bi, ²⁰¹Tl; analyzed fissionability; deduced level density asymptotic parameter.

1988SV01      Yad.Fiz. 47, 84 (1988)

M.I.Svirin, G.N.Smirenkin

Analysis of Neutron Evaporation Spectra in Generalized Superfluid Model of Nucleus

NUCLEAR REACTIONS ⁹⁴Zr, ¹⁸¹Ta(p, n), E=6-10 MeV; analyzed σ(En). Generalized superfluid model.

1988SV02      Yad.Fiz. 48, 682 (1988)

M.I.Svirin, G.N.Smirenkin

Study of Nuclear Level Density in the Range Z = 50

NUCLEAR REACTIONS ⁵⁷Fe, ⁹⁴Zr, ^107,109Ag, ¹¹⁵In, ^{116,117,118,119,122}Sn, ¹⁸¹Ta(p, n), E not given; analyzed evaporation spectra; deduced parameter dependence. Generalized superfluid model.

1978SV02      Yad.Fiz. 28, 286 (1978); Sov.J.Nucl.Phys. 28, 144 (1978)

M.I.Svirin, S.A.Karanskii, E.S.Matusevich, S.S.Prokhorov

Energy Distributions of Neutrons in the Reaction Ta(p, xn) at a Proton Energy 23 MeV

NUCLEAR REACTIONS Ta(p, xn), E=23 MeV; measured σ(En, θ).