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NSR database version of April 26, 2024.

Search: Author = A.S.Vorobyev

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2023VO03      JETP Lett. 117, 557 (2023)

A.S.Vorobyev, A.M.Gagarski, O.A.Shcherbakov, L.A.Vaishnene, A.L.Barabanov

Measurement of the Cross Section for the Neutron-Induced Fission of ²³⁸U Nuclei in the Energy Range of 0.3-500 MeV

NUCLEAR REACTIONS ^235,238U(n, F), E=0.3-500 MeV; measured reaction products, TOF; deduced anisotropy of the angular distribution of fission fragments, ratio of the fission σ, fission σ and uncertainties. Comparison with ENDF/B-VIII.0 and EXFOR libraries. The time-of-flight spectrometer of the GNEIS neutron complex at the Petersburg Nuclear Physics Institute, National Research Center Kurchatov Institute based on the SC-1000 synchrocyclotron with a 1-GeV proton beam.

doi: 10.1134/S0021364023600787
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41756.

2023VO04      Phys.Rev. C 108, 014621 (2023)

A.S.Vorobyev, A.M.Gagarski, O.A.Shcherbakov, L.A.Vaishnene, A.L.Barabanov, T.E.Kuzmina

Measurement of the ²³⁶U fission cross section and angular distributions of fragments from fission of ²³⁵U and ²³⁶U in the neutron-energy range of 0.3-500 MeV

NUCLEAR REACTIONS ^235,236U(n, F), E=0.300-500 MeV; measured neutron time-of-flight spectrum, fission fragments, angular distributions; deduced fission fragment angular anisotropy, absolute fission σ(E) ratio ²³⁶U/²³⁵U, fission σ(E) of ²³⁶U. Comparison to other experimental results, theoretical calculations with modified TALYS-1.9 and ENDF/B-VIII.0, JEFF-3.3, JENDL-5, ROSFOND-2010, CENDL-3.2 evaluations. Fission events registered using the position-sensitive low pressure multiwire proportional counters (MWPCs) at the neutron complex GNEIS (NRC "Kurchatov institute"-PNPI, Gatchina).

doi: 10.1103/PhysRevC.108.014621
Citations: PlumX Metrics

2020BA28      Bull.Rus.Acad.Sci.Phys. 84, 397 (2020)

A.L.Barabanov, A.S.Vorobyev, A.M.Gagarski, O.A.Shcherbakov, L.A.Vaishnene

Theoretical Analysis of Experimental Data on the Angular Anisotropy of Fragments of Nuclear Fission Induced by Neutrons at Energies of up to 200 MeV

doi: 10.3103/S1062873820040036
Citations: PlumX Metrics

2020SH30      Bull.Rus.Acad.Sci.Phys. 84, 1252 (2020)

O.A.Shcherbakov, A.S.Vorobyev, A.M.Gagarski, L.A.Vaishnene

Investigating the (n, γf) Reaction as a Way of Studying the Properties of Transitions between Highly Excited States in Heavy Nuclei

NUCLEAR REACTIONS ²³⁵U, ²³⁹Pu(n, F), E=4-130 eV; measured fission products, Eγ, Iγ; deduced γ-ray multiplicities, widths. Comparison with theoretical calculations.

doi: 10.3103/S1062873820100214
Citations: PlumX Metrics

2020VO11      Bull.Rus.Acad.Sci.Phys. 84, 1245 (2020)

A.S.Vorobyev, A.M.Gagarski, O.A.Shcherbakov, L.A.Vaishnene, A.L.Barabanov, T.E.Kuzmina

Fragment-Emission Anisotropy in ²³²Th, ²³³U, ²³⁵U, ²³⁸U, ²³⁹Pu, ²³⁷Np, ^natPb, and ²⁰⁹Bi Fission Induced by Neutrons with Intermediate Energies of 1-200 MeV

NUCLEAR REACTIONS ²³²Th, ^233,235,238U, ²³⁹Pu, ²³⁷Np, Pb, ²⁰⁹Bi(n, F), E=1-200 MeV; analyzed available data; deduced fragment angular distributions, fragment-emission anisotropy.

doi: 10.3103/S1062873820100299
Citations: PlumX Metrics

2020VO13      JETP Lett. 112, 323 (2020)

A.S.Vorobyev, A.M.Gagarski, O.A.Shcherbakov, L.A.Vaishnene, A.L.Barabanov

Measurement of the Angular Distributions of Fission Fragments from the Neutron-Induced Fission of ²⁴⁰Pu Nuclei in the Energy Range of 1-200 MeV and Their Model Analysis

NUCLEAR REACTIONS ²⁴⁰Pu(n, F), E=1-200 MeV; measured reaction products; deduced angular distributions of fission fragments, angular anisotropy. Comparison with TALYS σ calculations, available data.

doi: 10.1134/S0021364020180125
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41737.

2019NA33      Phys.Atomic Nuclei 82, 1661 (2019)

A.V.Nakin, A.S.Vorobyev, O.A.Shcherbakov

GEANT4 Simulation of the High-Energy Neutron Beam of the TOF Spectrometer GNEIS

NUCLEAR REACTIONS ²⁰⁸Pb(p, n), E=1-1000 MeV[neutrons from the TOF spectrometer GNEIS based on SC-1000 synchrocyclotron at PNPI Gatchina; calculated, simulated neutron source flux characteristics between 1 and 100 MeV of ToF using the QGSP_INCLXX_HP model and the GEANT4 code calculated relative neutron flux intensity using different models, neutron energy spectra σ(En); compared with experimental data; compared with experimental data; deduced the difference between calculations and data being small at energies below 200 MeV.

doi: 10.1134/S1063778819120196
Citations: PlumX Metrics

2019VO12      JETP Lett. 110, 242 (2019)

A.S.Vorobyev, A.M.Gagarski, O.A.Shcherbakov, L.A.Vaishnene, A.L.Barabanov

Angular Distributions and Anisotropy of Fragments from the Neutron-Induced Fission of ²³⁷Np in the Energy Range of 1-200 MeV: Measurement Data and Model Calculations

NUCLEAR REACTIONS ²³⁷Np(n, F), E=1-200 MeV; measured fission fragment products; deduced angular anisotropy of fragments. Comparison with TALYS calculations.

doi: 10.1134/s0021364019160124
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41686.

2018GU14      Phys.Atomic Nuclei 81, 447 (2018)

I.S.Guseva, A.M.Gagarski, V.E.Sokolov, G.A.Petrov, A.S.Vorobyev, G.V.Valsky, T.A.Zavarukhina

Detailed Investigations of Neutron-Neutron Angular Correlations in Slow-Neutron-Induced Fission of ²³³U, ²³⁵U, and ²³⁹Pu

NUCLEAR REACTIONS ^233,235U, ²³⁹Pu(n, f), E=slow; measured fission neutrons En, In(θ, time), n-n-coin; deduced coincidences vs time interval, nn-coin σ (in relative units) using different values of neutron detection thresholds (E_thresh=490-2080 keV) for different scisssion component admixtures; compared with Monte Carlo simulations.

doi: 10.1134/S1063778818040051
Citations: PlumX Metrics

2018VO07      JETP Lett. 107, 521 (2018)

A.S.Vorobyev, A.M.Gagarski, O.A.Shcherbakov, L.A.Vaishnene, A.L.Barabanov

Angular Distributions and Anisotropy of the Fragments from Neutron-Induced Fission of ²³⁹Pu and ^natPb in the Energy Range of 1-200 MeV

NUCLEAR REACTIONS ²³⁹Pu, Pb(n, F), E=1-200 MeV; measured reaction products; deduced σ(θ). Comparison with EXFOR database.

doi: 10.1134/S0021364018090138
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41658.

2018VO14      Bull.Rus.Acad.Sci.Phys. 82, 1240 (2018)

A.S.Vorobyev, A.M.Gagarski, O.A.Shcherbakov, L.A.Vaishnene, A.L.Barabanov

Angular Distribution and Anisotropy of Fission Fragments in Reactions Induced by Neutrons with Intermediate Energies of 1 to 200 MeV

NUCLEAR REACTIONS ²³²Th, ^233,235,238U, Pb, ²⁰⁹Bi(n, f), E=fission threshold - 200 MeV; measured fission fragments using ToF spectrometer with neutron source based on 1 GeV proton synchrocyclotron; deduced σ(θ), differences between results obtained in different works. Results for Pb and for ²⁰⁹Bi obtained for the first time.

doi: 10.3103/S1062873818100258
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41658.

2018VO15      Bull.Rus.Acad.Sci.Phys. 82, 1245 (2018)

A.S.Vorobyev, O.A.Shcherbakov, A.M.Gagarski, G.V.Valski, G.A.Petrov

Angular and Energy Distributions of Prompt Fission Neutrons from the Thermal-Neutron Induced Fission of ²³³U, ²³⁵U, and ²³⁹Pu and the Spontaneous Fission of ²⁵²Cf using the model of neutron emission from fully accelerated fragments.

doi: 10.3103/S106287381810026X
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41618.

2017EG01      Prog.Nucl.Energy 97, 106 (2017)

A.S.Egorov, V.M.Piksaikin, A.A.Goverdovski, D.E.Gremyachkin, K.V.Mitrofanov, V.F.Mitrofanov, B.F.Samylin, L.A.Vaishnene, F.V.Moroz, A.S.Vorobyev, O.A.Shcherbakov

Measurement of the delayed neutron characteristics in the interaction of relativistic protons with ²³⁸U nuclei

NUCLEAR REACTIONS ²³⁸U(p, X)¹NN, E=1 GeV; measured reaction products, En, In; deduced σ, energy dependence of the average T_1/2 of delayed neutron precursors, relative abundances of delayed neutron precursors.

doi: 10.1016/j.pnucene.2017.01.002
Citations: PlumX Metrics

2017VO12      J.Exper.Theo.Phys. 125, 619 (2017); Zh.Eksp.Teor.Fiz. 152, 730 (2017)

A.S.Vorobyev, O.A.Shcherbakov, A.M.Gagarski, G.A.Petrov, G.V.Valski

Experimental determination of the yield of "scission" neutrons from the spontaneous fission of ²⁵²Cf

doi: 10.1134/S1063776117080209
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41618.

2016CA03      Nucl.Data Sheets 131, 1 (2016)

R.Capote, Y.-J.Chen, F.-J.Hambsch, N.V.Kornilov, J.P.Lestone, O.Litaize, B.Morillon, D.Neudecker, S.Oberstedt, T.Ohsawa, N.Otuka, V.G.Pronyaev, A.Saxena, O.Serot, O.A.Shcherbakov, N.-C.Shu, D.L.Smith, P.Talou, A.Trkov, A.C.Tudora, R.Vogt, A.S.Vorobyev

Prompt Fission Neutron Spectra of Actinides

NUCLEAR REACTIONS ²³²Th, ^{233,234,235,238}U, ²³⁷Np, ²³⁹Pu(n, F), E<30 MeV; calculated prompt fission En, In; Comparison with available data.

doi: 10.1016/j.nds.2015.12.002
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset33084.

2016VO12      JETP Lett. 104, 365 (2016)

A.S.Vorobyev, A.M.Gagarski, O.A.Shcherbakov, L.A.Vaishnene, A.L.Barabanov

Angular distributions and anisotropy of the fragments from neutron-induced fission of ²³³U and ²⁰⁹Bi in the intermediate energy range of 1-200 MeV

NUCLEAR REACTIONS ²³³U, ²⁰⁹Bi(n, F), E=1-200 MeV; measured reaction products, En, In; deduced σ(θ). Comparison with available data.

doi: 10.1134/S002136401618003X
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41616.

2015VO14      JETP Lett. 105, 203 (2015)

A.S.Vorobyev, A.M.Gagarski, O.A.Shcherbakov, L.A.Vaishnene, A.L.Barabanov

Anisotropy of the fission fragments from neutron-induced fission in the intermediate energy range of 1-200 MeV

NUCLEAR REACTIONS ²³²Th, ^235,238U(n, F), E=1-200 MeV; measured fission fragments; deduced anisotropy of fission fragments. Comparison with available data.

doi: 10.1134/S0021364015160134
Citations: PlumX Metrics

2008PE20      Phys.Atomic Nuclei 71, 1137 (2008); Yad.Fiz. 71, 1165 (2008)

G.A.Petrov, A.M.Gagarski, I.S.Guseva, V.E.Sokolov, G.V.Valski, A.S.Vorobiev, D.O.Krinitcin, O.A.Shcherbakov, D.V.Nikolaev, Yu.S.Pleva, V.I.Petrova, T.A.Zavarukhina

Basic results of investigations of scission neutrons in nuclear fission at low excitation energies

RADIOACTIVITY ²⁵²Cf(SF);measured correlated neutron time-of-flight spectra, En, σ(dθ);scintillation detectors, n-γ pulse shape discrimination.

NUCLEAR REACTIONS ²³⁵U(n, f), E=thermal; measured correlated neutron time-of-flight spectra, En, σ(dθ), average E_n(θ), σ(dθ);neutron and gas-filled wire fission fragment detectors, n-γ pulse shape discrimination; comparison with isotropic emission model.

doi: 10.1134/S1063778808070028
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41516.

2007KO58      Nucl.Phys. A789, 55 (2007)

N.V.Kornilov, F.-J.Hambsch, A.S.Vorobyev

Neutron emission in fission

RADIOACTIVITY ^244,248Cm, ²⁵²Cf(SF); calculated neutron multiplicities and energies as a function of fragment mass for prompt neutron emission from excited fragments .

NUCLEAR REACTIONS ²³⁵U(n, X), E=thermal; calculated neutron multiplicities and energies as a function of fragment mass for prompt neutron emission from excited fragments .

doi: 10.1016/j.nuclphysa.2007.02.009
Citations: PlumX Metrics

2007VA09      Bull.Rus.Acad.Sci.Phys. 71, 354 (2007); Izv.Akad.Nauk RAS, Ser.Fiz. 71, 368 (2007)

G.V.Valskii, A.S.Vorobev, A.M.Gagarskii, I.S.Guseva, F.Gonnenwein, T.A.Zavarukhina, Yu.N.Kopach, D.O.Krinitsyn, M.Mutterer, G.A.Petrov, V.I.Petrova, V.E.Sokolov, O.A.Shcherbakov

Experimental Studies of Nuclear Fission Dynamics Near the Scission Point

NUCLEAR REACTIONS ^233,235U, ²³⁹Pu, ²⁴⁵Cm(polarized n, F), E=low; measured energy and angular distributions of the fission fragments; deduced symmetry coefficients of fragment emission.

doi: 10.3103/S1062873807030112
Citations: PlumX Metrics

2004DU01      Nucl.Instrum.Methods Phys.Res. A516, 539 (2004)

V.N.Dushin, F.-J.Hambsch, V.A.Jakovlev, V.A.Kalinin, I.S.Kraev, A.B.Laptev, D.V.Nikolaev, B.F.Petrov, G.A.Petrov, V.I.Petrova, Y.S.Pleva, O.A.Shcherbakov, V.I.Shpakov, V.E.Sokolov, A.S.Vorobyev, T.A.Zavarukhina

Facility for neutron multiplicity measurements in fission

RADIOACTIVITY ²⁵²Cf(SF); measured fission fragment mass distributions, neutron multiplicity.

doi: 10.1016/j.nima.2003.09.029
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41425.

2004LA10      Nucl.Phys. A734, E45 (2004)

A.B.Laptev, A.Yu.Donets, A.V.Fomichev, A.A.Fomichev, R.C.Haight, O.A.Shcherbakov, S.M.Soloviev, Yu.V.Tuboltsev, A.S.Vorobyev

Neutron Induced Fission Cross-Sections of ²⁴⁰Pu and ²⁴³Am in the Energy Range 1 - 200 MeV

NUCLEAR REACTIONS ²⁴⁰Pu, ²⁴³Am(n, F), E=1-200 MeV; measured fission σ.

doi: 10.1016/j.nuclphysa.2004.03.016
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset41487.

Note: The following list of authors and aliases matches the search parameter A.S.Vorobyev: A.S.VOROBEV, A.S.VOROBIEV, A.S.VOROBYEV