NSR Query Results
Output year order : Descending NSR database version of April 27, 2024. Search: Author = K.J.Kelly Found 23 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
2023KE08 Phys.Rev. C 108, 014603 (2023) K.J.Kelly, M.Devlin, J.M.O'Donnell, E.A.Bennett, M.Paris, P.A.Copp Measurement of the cross section of the Q = 4.4398 MeV 12C(n, n'γ) reaction from threshold to 16.5 MeV using γ and correlated n-γ detection NUCLEAR REACTIONS 12C(n, n'γ), E=4.5-16.5 MeV; measured Eγ, Iγ, En, Iν, nγ-coin; deduced σ(E). Comparison to other experimental data and evaluated values from ENDF/B-VIII.0. Correlated Gamma-Neutron Array for Scattering (CoGNAC) consisting of 54-element EJ-309 liquid scintillator array at Weapons Neutron Research (WNR) facility (LANSCE, LANL).
doi: 10.1103/PhysRevC.108.014603
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
2023NE10 Eur.Phys.J. N 9, 35 (2023) D.Neudecker, A.M.Lewis, E.F.Matthews, J.Vanhoy, R.C.Haight, D.L.Smith, P.Talou, S.Croft, A.D.Carlson, B.Pierson, A.Wallner, A.Al-Adili, L.Bernstein, R.Capote, M.Devlin, M.Drosg, D.L.Duke, S.Finch, M.W.Herman, K.J.Kelly, A.Koning, A.E.Lovell, P.Marini, K.Montoya, G.P.A.Nobre, M.Paris, B.Pritychenko, H.Sjostrand, L.Snyder, V.Sobes, A.Solders, J.Taieb Templates of Expected Measurement Uncertainties: a CSEWG Effort NUCLEAR REACTIONS 235U(n, F), E<20 MeV; analyzed available data; deduced nubar mean values and uncertainties.
doi: 10.1051/epjn/2023014
2023NE11 Eur.Phys.J. N 9, 32 (2023) D.Neudecker, M.Devlin, R.C.Haight, K.J.Kelly, P.Marini, A.D.Carlson, J.Taieb, M.C.White Templates of expected measurement uncertainties for prompt fission neutron spectra RADIOACTIVITY 252Cf(SF); analyzed available data; deduced prompt-fission neutron spectrum (PFNS), ratio to a Maxwellian function. NUCLEAR REACTIONS 239Pu(n, F), E<20 MeV; analyzed available data; deduced prompt-fission neutron spectrum (PFNS), ratio to a Maxwellian function.
doi: 10.1051/epjn/2023013
2023NE12 Eur.Phys.J. N 9, 30 (2023) D.Neudecker, A.D.Carlson, S.Croft, M.Devlin, K.J.Kelly, A.E.Lovell, P.Marini, J.Taieb Templates of expected measurement uncertainties for average prompt and total fission neutron multiplicities RADIOACTIVITY 252Cf(SF); analyzed available data; deduced prompt-fission neutron spectrum (PFNS), nubar uncertainties. NUCLEAR REACTIONS 239Pu(n, F), E<20 MeV; analyzed available data; deduced prompt-fission neutron spectrum (PFNS), nubar uncertainties.
doi: 10.1051/epjn/2023016
2023VA11 Eur.Phys.J. N 9, 31 (2023) J.R.Vanhoy, R.C.Haight, S.F.Hicks, M.Devlin, D.Neudecker, M.Herman, A.Koning, K.J.Kelly, I.Thompson Templates of expected measurement uncertainties for (n, xn) cross sections NUCLEAR REACTIONS 56Fe, 23Na(n, n'), 9Be(n, X), E=3.5, 6 MeV; analyzed available data; deduced a template for evaluating experimental uncertainties for neutron elastic and inelastic scattering σ and γ-ray production σ from (n, xn) measurements at laboratories with monoenergetic or white neutron sources.
doi: 10.1051/epjn/2023019
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
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
2022MO02 Ann.Nucl.Energy 165, 108647 (2022) K.S.Mohindroo, Y.Danon, E.Blain, M.Devlin, K.J.Kelly Quasi-differential neutron induced neutron emissions from 235U, and 239Pu NUCLEAR REACTIONS C, 235U, 239Pu(N, X)1NN, E=0.82-20 MeV; measured reaction products, En, In; deduced neutron emission spectrum. Comparison with ENDF/B-VIII.0, JEFF-3.3, and JENDL-4.0 evaluated libraries. The Los Alamos Neutron Science Center.
doi: 10.1016/j.anucene.2021.108647
2021KE05 Nucl.Data Sheets 173, 42 (2021) K.J.Kelly, P.Marini, J.Taieb, M.Devlin, D.Neudecker, R.C.Haight, G.Belier, B.Laurent, P.Morfouace, J.M.O'Donnell, E.Bauge, M.B.Chadwick, A.Chatillon, D.Etasse, P.Talou, M.C.White, C.Y.Wu, E.A.Bennett Comparison of Results from Recent NNSA and CEA Measurements of the 239Pu(n, f) Prompt Fission Neutron Spectrum NUCLEAR REACTIONS 239Pu(n, F), E<20 MeV; analyzed the NNSA and CEA data; deduced prompt fission neutron spectrum (PFNS), systematic differences.
doi: 10.1016/j.nds.2021.04.003
2021KE11 Phys.Rev. C 104, 064614 (2021) K.J.Kelly, M.Devlin, J.M.O'Donnell, E.A.Bennett Correlated n-γ angular distributions from the Q=4.4398 MeV 12C(n, n'γ) reaction for incident neutron energies from 6.5 MeV to 16.5 MeV NUCLEAR REACTIONS 12C(n, n'γ), E=6.5-16.5 MeV; measured reaction products, neutron and γ spectra using array of fifty-four detector EJ-309 liquid scintillator detectors, and pulse shape discrimination (PSD) techniques, n(θ)γ(θ) at the Los Alamos Neutron Science Center (LANSCE). Comparison with available previous experimental data, and with nuclear data evaluated libraries. Discussed potential large systematic uncertainties.
doi: 10.1103/PhysRevC.104.064614
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
2020LO08 Phys.Rev. C 102, 024621 (2020) A.E.Lovell, P.Talou, I.Stetcu, K.J.Kelly Correlations between fission fragment and neutron anisotropies in neutron-induced fission NUCLEAR REACTIONS 235,238U, 239Pu(n, F), E=0-20 MeV; calculated anisotropic angular distributions for fission-fragments, prompt neutrons only from fission, and all prompt neutrons as a function of incident energy, ratio between the neutron anisotropy and the fission-fragment anisotropy. Comparison between the Hauser-Feshbach Monte Carlo calculations using CGMF code, and preliminary experimental data from the Chi-Nu liquid scintillator array at LANL.
doi: 10.1103/PhysRevC.102.024621
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
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
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
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
2017KE01 Phys.Rev. C 95, 015806 (2017) K.J.Kelly, A.E.Champagne, L.N.Downen, J.R.Dermigny, S.Hunt, C.Iliadis, A.L.Cooper New measurements of low-energy resonances in the 22Ne (p, γ) 23Na reaction NUCLEAR REACTIONS 22Ne(p, γ), E=165, 192, 425, 441 keV; measured Eγ, Iγ, γγ-coin for resonances and direct capture process using HPGe-NaI detectors and plastic scintillator cosmic ray veto at LENA-TUNL facility. 23Na; deduced levels, resonance strengths, σγ for direct capture state, γ-ray branching ratios from singles and coincidence γ-ray data for resonant states, thermonuclear reaction rates.
doi: 10.1103/PhysRevC.95.015806
2016DA05 Phys.Rev. C 94, 025803 (2016) S.Daigle, K.J.Kelly, A.E.Champagne, M.Q.Buckner, C.Iliadis, C.Howard Measurement of the Ec.m.r = 259 keV resonance in the 14N(p, g)15O reaction NUCLEAR REACTIONS 14N(p, γ)15O, E=270-310 keV; measured Eγ, Iγ using an HPGe detector and APEX array of NaI(Tl) detectors at LENA-TUNL facility. 15O; deduced levels, resonances, γ-ray branching ratios from the decay of the 259-keV proton resonance, resonance strength. Comparison with previous experimental data.
doi: 10.1103/PhysRevC.94.025803
2016DE36 Nucl.Instrum.Methods Phys.Res. 830, 427 (2016) J.R.Dermigny, C.Iliadis, M.Q.Buckner, K.J.Kelly γ-Ray spectroscopy using a binned likelihood approach NUCLEAR REACTIONS 18O, 25Mg(p, γ), E not given; measured reaction products, Eγ, Iγ; deduced a novel data-analysis method for γ-ray spectroscopy, resonance parameters. Comparison with Monte Carlo calculations.
doi: 10.1016/j.nima.2016.06.017
2015BU02 Phys.Rev. C 91, 015812 (2015) M.Q.Buckner, C.Iliadis, K.J.Kelly, L.N.Downen, A.E.Champagne, J.M.Cesaratto, C.Howard, R.Longland High-intensity-beam study of 17O(p, γ)18F and thermonuclear reaction rates for 17O + p NUCLEAR REACTIONS 17O(p, γ), E=170-530 keV; measured Eγ, Iγ, γγ-coin at LENA-TUNL facility. 18F; deduced levels, J, π, resonances, γ branching ratios from resonance capture, and from direct capture as function of E(p), resonance strengths, total S(E) factors. 17O(p, γ), (p, α); deduced thermonuclear reaction rates. Comparison with previous results.
doi: 10.1103/PhysRevC.91.015812
2015KE05 Phys.Rev. C 92, 035805 (2015) K.J.Kelly, A.E.Champagne, R.Longland, M.Q.Buckner New recommended wγ for the Ec.m.r = 458 keV resonance in 22Ne(p, γ)23Na NUCLEAR REACTIONS 22Ne(p, γ)23Na, E=494 keV; measured Eγ, Iγ, yields from the 458-keV resonance at LENA-TUNL; deduced γ-branching ratios for the primary transitions from the resonance, and resonance strength. Validation of the technique and comparison with previous experimental results.
doi: 10.1103/PhysRevC.92.035805
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