NSR Query Results
Output year order : Descending NSR database version of April 27, 2024. Search: Author = J.F.Lemaitre Found 10 matches. 2023FU03 Eur.Phys.J. A 59, 178 (2023) K.Fujio, A.Al-Adili, F.Nordstrom, J.-F.Lemaitre, S.Okumura, S.Chiba, A.Koning TALYS calculations of prompt fission observables and independent fission product yields for the neutron-induced fission of 235U NUCLEAR REACTIONS 235U(n, F), E<20 MeV; calculated prompt neutron and γ-ray multiplicities, PFNS, independent fission product yields. Comparison with available data.
doi: 10.1140/epja/s10050-023-01095-4
2022JH01 Phys.Rev. C 106, 044607 (2022) A.Jhingan, C.Schmitt, A.Lemasson, S.Biswas, Y.H.Kim, D.Ramos, A.N.Andreyev, D.Curien, M.Ciemala, E.Clement, O.Dorvaux, B.De Canditiis, F.Didierjean, G.Duchene, J.Dudouet, J.Frankland, G.Fremont, J.Goupil, B.Jacquot, C.Raison, D.Ralet, B.-M.Retailleau, L.Stuttge, I.Tsekhanovich, A.V.Andreev, S.Goriely, S.Hilaire, J.-F.Lemaitre, P.Moller, K.-H.Schmidt 178Hg and asymmetric fission of neutron-deficient pre-actinides NUCLEAR REACTIONS 54Fe(124Xe, X)178Hg; E=4.3 MeV/nucleon; measured reaction products, fission fragments, (fragment)(fragment)-coin; deduced total kinetic energy distribution, post-neutron (after neutron emission) and pre-neutron (before emission) mass distribution. Comparison to other experimental data in particular with 180Hg and 178Pt fission. Obtained pre-neutron mass-distribution is compared with four different calculations: the dynamical Brownians%hape motion (BSM) model, the microscopic scission point model (SPY2), the improved macromicroscopic scission point model (SPM), and the semiempirical GEneral Fission (GEF) model. VAMOS++ heavy-ion magnetic spectrometer with new SEcond Detection (SED) arm for coincident pair fragment detection at GANIL.
doi: 10.1103/PhysRevC.106.044607
2021LE05 Phys.Rev. C 103, 025806 (2021) J.-F.Lemaitre, S.Goriely, A.Bauswein, H.-T.Janka Fission fragment distributions and their impact on the r-process nucleosynthesis in neutron star mergers NUCLEAR REACTIONS 235U(n, F), E=thermal; calculated energy of fission fragments with or without the phenomenological distance correction. 235U, 239Pu, 251Cf(n, F), E=thermal; calculated isotopic and isobaric fission yields, evaporated neutron distributions as a function of the fragment mass number, total mean number of evaporated neutrons per fission, evaporated neutron distribution of spontaneous fission of 252Cf. Improved scission-point yield (SPY) model, and comparison with GEF model calculations, and with experimental and evaluated data for fission yields. NUCLEAR STRUCTURE Z=70-124, N=80-290; calculated peak multiplicity for the raw preneutron isobaric yields with corrected distance, mean prompt neutron multiplicity per fission, peak multiplicity for the smooth preneutron isobaric yields with corrected distance, mean available energy release per fission, peak multiplicity for the smooth preneutron isobaric yields without corrected distance, isolines of mean available energy release per fission, and mean prompt neutron multiplicity per fission for 3000 nuclei. Z=84-92, N=118-140; Z=92-104, N=140-160; calculated isobaric fission yields for A=70-160 fragments, abundances of A=50-240 nuclei. Z=93-104, A=272-291; Z=99-110, A=328-347; calculated postneutron fission-fragment distributions (FFDs). Analyzed impact of fission on the r-process nucleosynthesis in binary neutron star mergers. Improved scission-point yield (SPY) model, and comparison with GEF model calculations, and with experimental and evaluated data for fission yields.
doi: 10.1103/PhysRevC.103.025806
2020AN12 Phys.Rev. C 102, 014319 (2020) B.Andel, A.N.Andreyev, S.Antalic, M.Al Monthery, A.Barzakh, M.L.Bissell, K.Chrysalidis, T.E.Cocolios, J.G.Cubiss, T.Day Goodacre, N.Dubray, G.J.Farooq-Smith, D.V.Fedorov, V.N.Fedosseev, L.P.Gaffney, R.F.Garcia Ruiz, S.Goriely, C.Granados, R.D.Harding, R.Heinke, S.Hilaire, M.Huyse, J.-F.Lemaitre, K.M.Lynch, B.A.Marsh, P.Molkanov, P.Mosat, S.Peru, C.Raison, S.Rothe, C.Seiffert, M.D.Seliverstov, S.Sels, D.Studer, J.Sundberg, P.Van Duppen β-delayed fission of isomers in 188Bi RADIOACTIVITY 188,188m,190,190mBi(α), (β+F)[from U(p, X), E=1.4 GeV using RILIS and HRS separators at ISOLDE-CERN facility]; measured Eα, Iα, fission fragment energies, (fission fragment)(fission fragment)-coin; deduced partial T1/2 of β+-delayed fission (βDF) mode, βDF probabilities. 188Pb; deduced mean total kinetic energy and fission fragment mass distribution after 188Bi β-decay of high-spin isomer of 188Bi, limits of βDF partial half-lives of the two activities in 190Bi. Comparison of partial βDF partial half-lives with calculations based on HFB and QRPA, and those of fragment mass distribution with SPY and FRLDM-based calculations. Systematics of βDF partial T1/2 in neutron deficient nuclei in Tl, Bi, At, Fr, Np, Am, Bk, Es and Md isotopes. 182,184,186,188,190,192Pb; calculated theoretical pre-neutron-emission fission fragment mass distributions (FFMDs) with the SPY model using the D1M-Gogny interaction, and with the FRLDM model.
doi: 10.1103/PhysRevC.102.014319
2019LE06 Phys.Rev. C 99, 034612 (2019) J.-F.Lemaitre, S.Goriely, S.Hilaire, J.-L.Sida Fully microscopic scission-point model to predict fission fragment observables NUCLEAR REACTIONS 235U, 239Pu(n, F), E=thermal; calculated proton density distribution, scission distance, Coulomb and nuclear interaction energies for the scission configuration of 236U into 104Mo and 132Sn, fission yields for four different estimates of the nuclear interaction energy and three proton densities at scission neck of 240Pu, pre-neutron-emission fission yields, kinetic energy (KE) distribution, fission yields for various neck densities, isotopic fission yields, proton odd-even effect amplitude for isotopic yields. Z=78-110, N=90-250; calculated peak multiplicities in the isobaric yields, mean TKE of fragments, mean available energy release per fission and mean prompt neutron multiplicity per fission, and mean deformation of fission fragments for about 2000 fissioning nuclei lying between proton and neutron drip lines from Pt to Mt for an initial excitation energy of 8 MeV. Z=91, N=125-200; Z=98, N=130-225; Z=106, N=145-240; calculated pre-neutron-emission isotonic yields and fragment deformation from fission of Pa, Ca and Sg isotopic chains with an excitation energy of 8 MeV. Calculations used upgraded version of scission-point yield (SPY2) model to estimate yields and the kinetic energy distributions of fission fragments, and using nuclear ingredients of 7000 nuclei at 120 axial quadrupole deformations, describing the fragments properties at the scission point.Comparison with available experimental data. RADIOACTIVITY 252Cf(SF); calculated pre-neutron emission fission yields, fission yields for various neck densities, isotopic fission yields, kinetic energy per fragment, mean deformation, mean total kinetic energy, and proton odd-even effect amplitude for isotopic yields. Comparison with available experimental data.
doi: 10.1103/PhysRevC.99.034612
2018LE11 Phys.Rev. C 98, 024623 (2018) J.-F.Lemaitre, S.Goriely, S.Hilaire, N.Dubray Microscopic description of the fission path with the Gogny interaction NUCLEAR STRUCTURE 260Fm, 286Sg; calculated potential energy surfaces (PES) and least-energy path (LEP) in (Q30, Q20) plane using Dijkstra's minimization algorithm. 226Th, 236,238U, 240Pu; calculated LEP as function of Q20 with different corrections in the ATDHF and GCM frameworks. 230,232Th, 232,234,236,238U, 238,240,242,244Pu, 242,244,246,248Cm; calculated primary and secondary fission barrier heights in the ADTHF and GCM frameworks using Gogny D1M interaction, and compared with empirical values. Z=90-110, N=110-250; calculated heights of primary fission barriers for even-even nuclei using Gogny D1M interaction, and compared with values from HFB14 calculations. RADIOACTIVITY 232,234,236,238U, 240Pu, 248Cm, 250,252,254,256Fm, 252,254,256No, 256,258,260Rf, 258,260,262Sg, 264Hs(SF); calculated spontaneous fission half-lives as a function of the fissibility parameter with either the ATDHF or the GCM correction. Comparison with experimental data.
doi: 10.1103/PhysRevC.98.024623
2015LE02 Acta Phys.Pol. B46, 585 (2015) J.-F.Lemaitre, S.Hilaire, S.Panebianco, J.-L.Sida Nuclear Fission Modelling with SPY
doi: 10.5506/APhysPolB.46.585
2015LE11 Phys.Rev. C 92, 034617 (2015) J.-F.Lemaitre, S.Panebianco, J.-L.Sida, S.Hilaire, S.Heinrich New statistical scission-point model to predict fission fragment observables NUCLEAR REACTIONS 235U(n, F), E=thermal; calculated Coulomb energy and available energy as a function of the fragments deformation for fragment pairs (132Sn+104Mo), (118Pd+118Pd), maximum available energy as a function of the fragment proton and neutron numbers, fragment mass and charge yields, mean fragment deformation, fission fragment kinetic energy, and comparison with available data and ENDF/B-VII.1 data library. Z=85-92, N=118-142; calculated charge yields for the fission of light actinides, and compared to experimental data. Z=70-110, N=75-250 for compound nuclei; calculated peak multiplicity in the mass yields, and estimated mean prompt neutron multiplicity per fragment as a function of the compound nucleus for an excitation energy of 8 MeV. A new statistical scission-point yield (SPY) model. 132Sn, 104Mo, 118Pd; calculated potential energy as a function of deformation using liquid drop, HFB and shifted HFB models.
doi: 10.1103/PhysRevC.92.034617
2013GO17 Phys.Rev.Lett. 111, 242502 (2013) S.Goriely, J.-L.Sida, J.-F.Lemaitre, S.Panebianco, N.Dubray, S.Hilaire, A.Bauswein, H.-T.Janka New Fission Fragment Distributions and r-Process Origin of the Rare-Earth Elements
doi: 10.1103/PhysRevLett.111.242502
2012PA40 Phys.Rev. C 86, 064601 (2012) S.Panebianco, J.-L.Sida, H.Goutte, J.-F.Lemaitre, N.Dubray, S.Hilaire Role of deformed shell effects on the mass asymmetry in nuclear fission of mercury isotopes RADIOACTIVITY 180,198Hg, 235U(SF); calculated minimum absolute available energy at scission for all possible fragmentations, symmetric and asymmetric fission. Microscopic scission-point model.
doi: 10.1103/PhysRevC.86.064601
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