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NSR database version of April 26, 2024.

Search: Author = J.A.Gomez

Found 9 matches.

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2023KE09      Phys.Rev. C 108, 024603 (2023)

K.J.Kelly, M.Devlin, J.M.O'Donnell, D.Neudecker, A.E.Lovell, R.C.Haight, C.Y.Wu, R.Henderson, E.A.Bennett, T.Kawano, J.L.Ullmann, N.Fotiades, J.Henderson, S.M.Mosby, T.N.Taddeucci, P.Talou, M.C.White, J.A.Gomez, H.Y.Lee

Measurement of the ²³⁸U(n, f) prompt fission neutron spectrum from 10 keV to 10 MeV induced by neutrons with 1.5-20 MeV energy

NUCLEAR REACTIONS ²³⁸U(n, F), E=1.5-20 MeV; measured fission fragments, En, In, neutron time-of-flight, (fragment)n-coin; deduced prompt fission neutron spectrum (PFNS). Systematic trends in PFNS and PFNS ratios for ²³⁹Pu, ²³⁵U, and ²³⁸U obtained in series of Chi-Nu experiments. Comparison to other experimental results, CGMF calculations and data from JEFF-3.3, JENDL-5.0. ENDF/B-VIII libraries. Pulsed white neutron source at Weapons Neutron Research (WNR) facility of the Los Alamos Neutron Science Center (LANSCE). Li-glass array consisting of 22 detectors and liquid scintillator array consisting of 54 detector used for neutron detection, while PPAC used for detecting fission fragments in the frame of Chi-Nu experiment.

doi: 10.1103/PhysRevC.108.024603
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2022KE01      Phys.Rev. C 105, 044615 (2022)

K.J.Kelly, J.A.Gomez, M.Devlin, J.M.O'Donnell, D.Neudecker, A.E.Lovell, R.C.Haight, C.Y.Wu, R.Henderson, T.Kawano, E.A.Bennett, S.M.Mosby, J.L.Ullmann, N.Fotiades, J.Henderson, T.N.Taddeucci, H.Y.Lee, P.Talou, M.C.White

Measurement of the ²³⁵U(n, f) prompt fission neutron spectrum from 10 keV to 10 MeV induced by neutrons of energy from 1 MeV to 20 MeV

NUCLEAR REACTIONS ²³⁵U(n, F), E=0.01-10 MeV; measured In, En, neutron time-of-flight, fission fragments, neutrons angular distributions, (fragment)n-coin; deduced prompt fission neutron spectrum (PFNS), components corresponding to first-, second-, and third-chance fission as well as pre-equilibrium neutron emission preceding fission, mean PFNS energy, ratio to PFNMS obtained in ²³⁹Pu(n, F) reaction. Experiment performed as a part of Chi-Nu project aimed to measure the PFNS of major actinides with the Weapons Neutron Research (WNR) facility at the Los Alamos Neutron Science Center (LANSCE). The results are compared with other experimental data, CGMF calculations and selected nuclear data evaluations - ENDF/B-VIII.0, JEFF-3.3, JENDL-5.0.

doi: 10.1103/PhysRevC.105.044615
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2022MA58      Phys.Lett. B 835, 137513 (2022)

P.Marini, J.Taieb, D.Neudecker, G.Belier, A.Chatillon, D.Etasse, B.Laurent, P.Morfouace, B.Morillon, M.Devlin, J.A.Gomez, R.C.Haight, K.J.Kelly, J.M.O'Donnell

Energy dependence of prompt fissions neutron multiplicity in the ²³⁹Pu(n, f) reaction

NUCLEAR REACTIONS ²³⁹Pu(n, F), E=1-700 MeV; calculated neutron multiplicity, nubar. Comparison with available data, ENDF/B-VIII.0 and JEFF3.3 libraries.

doi: 10.1016/j.physletb.2022.137513
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2020KE05      Phys.Rev. C 102, 034615 (2020)

K.J.Kelly, M.Devlin, J.M.O'Donnell, J.A.Gomez, D.Neudecker, R.C.Haight, T.N.Taddeucci, S.M.Mosby, H.Y.Lee, C.Y.Wu, R.Henderson, P.Talou, T.Kawano, A.E.Lovell, M.C.White, J.L.Ullmann, N.Fotiades, J.Henderson, M.Q.Buckner

Measurement of the ²³⁹Pu(n, f) prompt fission neutron spectrum from 10 keV to 10 MeV induced by neutrons of energy 1-20 MeV

NUCLEAR REACTIONS ²³⁹Pu(n, F), E=1-20 MeV; measured outgoing prompt fission neutron spectrum (PFNS) in the range of E(n)=0.01-10 MeV, I(n) using Li-glass detector array and 54-detector EJ-309 liquid scintillator array in Chi-Nu experiment at the WNR-LANSCE-Los Alamos facility; deduced correlation matrix for PFNS from the Li-glass and the liquid scintillator. Comparison of present PFNS results with previous experimental results, and with evaluated data in ENDF/B-VIII.0 and JEFF-3.3 libraries.

doi: 10.1103/PhysRevC.102.034615
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14682.

2020MA18      Phys.Rev. C 101, 044614 (2020)

P.Marini, J.Taieb, B.Laurent, G.Belier, A.Chatillon, D.Etasse, P.Morfouace, M.Devlin, J.A.Gomez, R.C.Haight, K.J.Kelly, J.M.O'Donnell, K.T.Schmitt

Prompt-fission-neutron spectra in the ²³⁹Pu(n, f) reaction

NUCLEAR REACTIONS ²³⁹Pu(n, F), E=0.7-700 MeV white pulsed neutron beam; measured E(n), I(n), neutron time-of-flight, fission fragments, (fission fragments)n-coin, prompt fission neutron spectrum (PFNS), and mean prompt fission neutron energy with respect to ²⁵²Cf(SF) using multiplate fission chamber coupled to the Chi-Nu liquid scintillator neutron detector array at the WNR facility of the Los Alamos Neutron Science Center (LANSC); deduced ratio of PFNS to a Maxwellian distribution, mean kinetic energy of PFN as a function of incident neutron energy, angular dependence. Comparison with theoretical predictions based on the Los Alamos model, ENDF/B-VIII.0 and JEFF3.3, and with previous experimental results.

doi: 10.1103/PhysRevC.101.044614
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14684.

2019KE04      Phys.Rev.Lett. 122, 072503 (2019)

K.J.Kelly, T.Kawano, J.M.O'Donnell, J.A.Gomez, M.Devlin, D.Neudecker, P.Talou, A.E.Lovell, M.C.White, R.C.Haight, T.N.Taddeucci, S.M.Mosby, H.Y.Lee, C.Y.Wu, R.Henderson, J.Henderson, M.Q.Buckner

Preequilibrium Asymmetries in the ²³⁹Pu(n, f) Prompt Fission Neutron Spectrum

NUCLEAR REACTIONS ²³⁹Pu(n, F), E=15-17.5 MeV; measured reaction products, En, In; deduced neutron excess of the preequilibrium prefission distribution above the postfission neutron spectrum. Comparison with theoretical calculations.

doi: 10.1103/PhysRevLett.122.072503
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2018DE08      Nucl.Data Sheets 148, 322 (2018)

M.Devlin, J.A.Gomez, K.J.Kelly, R.C.Haight, J.M.O'Donnell, T.N.Taddeucci, H.Y.Lee, S.M.Mosby, B.A.Perdue, N.Fotiades, J.L.Ullmann, C.Y.Wu, B.Bucher, M.Q.Buckner, R.A.Henderson, D.Neudecker, M.C.White, P.Talou, M.E.Rising, C.J.Solomon

The Prompt Fission Neutron Spectrum of ²³⁵U(n, f) below 2.5 MeV for Incident Neutrons from 0.7 to 20 MeV

NUCLEAR REACTIONS ²³⁵U(n, F), E=0.7-20 MeV; measured reaction products, En, In, TOF; deduced prompt fission neutron spectrum, σ(E).

doi: 10.1016/j.nds.2018.02.008
Citations: PlumX Metrics

2018NE02      Nucl.Data Sheets 148, 293 (2018)

D.Neudecker, P.Talou, T.Kawano, A.C.Kahler, M.C.White, T.N.Taddeucci, R.C.Haight, B.Kiedrowski, J.M.O'Donnell, J.A.Gomez, K.J.Kelly, M.Devlin, M.E.Rising

Evaluations of Energy Spectra of Neutrons Emitted Promptly in Neutron-induced Fission of ²³⁵U and ²³⁹Pu

NUCLEAR REACTIONS ²³⁵U, ²³⁹Pu(n, F)¹NN, E<20 MeV; analyzed available data; deduced σ(E), total kinetic energies.

doi: 10.1016/j.nds.2018.02.006
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2017KI11      Nucl.Instrum.Methods Phys.Res. A874, 57 (2017)

L.E.Kirsch, M.Devlin, S.M.Mosby, J.A.Gomez

A new measurement of the ⁶Li(n, α)t cross section at MeV energies using a ²⁵²Cf fission chamber and ⁶Li scintillators

NUCLEAR REACTIONS ⁶Li(n, α), E<10 MeV; measured reaction products, Eα, Iα, En, In, TOF; deduced σ. Comparison with ENDF/B-VII.1 library, available data.

doi: 10.1016/j.nima.2017.08.046
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset14483.