NSR Query Results
Output year order : Descending NSR database version of April 26, 2024. Search: Author = S.Marin Found 7 matches. 2023GI01 Phys.Rev. C 107, 014612 (2023) N.P.Giha, S.Marin, J.A.Baker, I.E.Hernandez, K.J.Kelly, M.Devlin, J.M.O'Donnell, R.Vogt, J.Randrup, P.Talou, I.Stetcu, A.E.Lovell, O.Litaize, O.Serot, A.Chebboubi, C.-Y.Wu, S.D.Clarke, S.A.Pozzi Correlations between energy and γ-ray emission in 239Pu(n, f) NUCLEAR REACTIONS 239Pu(n, f), E=2-40 MeV; measured fragments, En, In, Eγ, Iγ, (fragments)γ-coin, (fragment)n-coin, nγ-coin; deduced γ spectrum, γ multiplicity, linear relation between incident neutron energy and γ multiplicity. Comparison to fission model calculations done with CGMF, FIFRELIN and FREYA codes. Multiplicity results are compared to ENDF/B-VIII.0 data and to experimental data on 238U(n, F), 239Pu(d, F), 233Pu(d, F), 240Pu(d, F) reactions. Broad-spectrum neutron beam produced via spallation reaction of an 800 MeV proton beam on W target (Los Alamos Neutron Science Center). Chi-Nu liquid scintillator array, a hemispherical array of 54 EJ-309 (n- and γ- measurement) surrounding multifoil parallel-plate avalanche counter (PPAC) serving as target and contain ing 239Pu (fragment measurement).
doi: 10.1103/PhysRevC.107.014612
2022MA26 Phys.Rev. C 105, 054609 (2022) S.Marin, E.P.Sansevero, M.S.Okar, I.E.Hernandez, R.Vogt, J.Randrup, S.D.Clarke, V.A.Protopopescu, S.A.Pozzi Directional dependence of the event-by-event neutron-γ multiplicity correlations in 252Cf(sf) RADIOACTIVITY 252Cf(SF); analyzed Eg and En data collected at the Chi-Nu array at the Los Alamos Neutron Science Center with considering the angle between the emitted particles in addition to their individual energies; deduced nγ-correlations, enhancement of γ-emission around 0.7 and 1.2 MeV, directional alignment for Eγ below 0.7 MeV, correlation between fragment excitation energies and angular momentum. Comparison with model calculations.
doi: 10.1103/PhysRevC.105.054609
2021MA54 Phys.Rev. C 104, 024602 (2021) S.Marin, M.S.Okar, E.P.Sansevero, I.E.Hernandez, C.A.Ballard, R.Vogt, J.Randrup, P.Talou, A.E.Lovell, I.Stetcu, O.Serot, O.Litaize, A.Chebboubi, S.D.Clarke, V.A.Protopopescu, S.A.Pozzi Structure in the event-by-event energy-dependent neutron-γ multiplicity correlations in 252Cf(sf) RADIOACTIVITY 252Cf(SF); analyzed Eγ and E(n) data collected at the Chi-Nu array at the Los Alamos Neutron Science Center with the application of the normalized differential multiplicity covariances; deduced neutron-γ correlations, evidence for enhancements in neutron-γ correlations around Eγ=0.7 and 1.2 MeV. Comparison with model calculations. Relevance to disagreement in the literature about correlations between neutron-γ competition and fragment properties.
doi: 10.1103/PhysRevC.104.024602
2021ST18 Phys.Rev.Lett. 127, 222502 (2021) I.Stetcu, A.E.Lovell, P.Talou, T.Kawano, S.Marin, S.A.Pozzi, A.Bulgac Angular Momentum Removal by Neutron and γ-Ray Emissions during Fission Fragment Decays NUCLEAR REACTIONS 235U, 239Pu(n, F), E thermal; 238U(n, F), E=1.9 MeV; analyzed available data; deduced the angular momentum removal from fission fragments through neutron and γ-ray emission, wide angular momentum removal distributions can hide any underlying correlations in the fission fragment initial spin values. RADIOACTIVITY 252Cf(SF); analyzed available data; deduced the angular momentum removal from fission fragments through neutron and γ-ray emission.
doi: 10.1103/PhysRevLett.127.222502
2020MA20 Nucl.Instrum.Methods Phys.Res. A968, 163807 (2020) S.Marin, V.A.Protopopescu, R.Vogt, M.J.Marcath, S.Okar, M.Hua, P.Talou, P.F.Schuster, S.D.Clarke, S.A.Pozzi Event-by-event neutron-photon multiplicity correlations in 252Cf(sf) RADIOACTIVITY 252Cf(SF); analyzed available data using unfolding techniques in comparison with predictions of model-based calculations; deduced a significant event-by-event neutron-photon emission competition following the spontaneous fission of 252Cf.
doi: 10.1016/j.nima.2020.163907
2019SC12 Phys.Rev. C 100, 014605 (2019) P.F.Schuster, M.J.Marcath, S.Marin, S.D.Clarke, M.Devlin, R.C.Haight, R.Vogt, P.Talou, I.Stetcu, T.Kawano, J.Randrup, S.A.Pozzi High resolution measurement of tagged two-neutron energy and angle correlations in 252Cf (sf) RADIOACTIVITY 252Cf(SF); measured prompt neutron time of flight, angular distribution of neutrons, nn-coin, prompt neutron emission anisotropy, correlations in angle and energy between prompt neutrons emitted in spontaneous fission using fission chamber and the Chi-Nu liquid scintillator detector array at LANSCE-LANL facility. Comparison with simulations produced by the fission event generators CGMF, FREYA, and MCNPX-POLIMI IPOL(1)=1.
doi: 10.1103/PhysRevC.100.014605
1998VY01 Yad.Fiz. 61, No 5, 844 (1998); Phys.Atomic Nuclei 61, 760 (1998) V.N.Vyrodov, Yu.N.Kozlov, M.I.Gurevich, S.V.Marin, A.V.Martemyanov, V.P.Martemyanov, I.N.Machulin, A.A.Sabelnikov, S.V.Sukhotin, V.G.Tarasenkov, E.V.Turbin, S.V.Khalturtsev Investigation of Inverse Beta Decay on Protons at the Upgraded Detector Deuteron
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