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NSR database version of April 27, 2024.

Search: Author = M.C.White

Found 24 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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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
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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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2021HE28      Ann.Nucl.Energy 163, 108494 (2021)

M.Herman, D.A.Brown, R.Capote, M.B.Chadwick, W.Haeck, J.D.Hutchinson, T.Kawano, D.Neudecker, G.Palmiotti, M.Salvatores, P.Talou, A.Trkov, M.C.White

Infrastructure for the new paradigm of nuclear reaction evaluation

NUCLEAR REACTIONS ¹⁰⁵Pd(n, γ), ²³⁵U, ²³⁹Pu(n, F), E<20 MeV; analyzed available data; deduced pilot assimilation project needs.

doi: 10.1016/j.anucene.2021.108494
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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
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2021NE02      Ann.Nucl.Energy 159, 108345(2021)

D.Neudecker, O.Cabellos, A.R.Clark, W.Haeck, R.Capote, A.Trkov, M.C.White, M.E.Rising

Which nuclear data can be validated with LLNL pulsed-sphere experiments?

doi: 10.1016/j.anucene.2021.108345
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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.

2020NE03      Nucl.Data Sheets 163, 228 (2020)

D.Neudecker, D.L.Smith, F.Tovesson, R.Capote, M.C.White, N.S.Bowden, L.Snyder, A.D.Carlson, R.J.Casperson, V.Pronyaev, S.Sangiorgio, K.T.Schmitt, B.Seilhan, N.Walsh, W.Younes

Applying a Template of Expected Uncertainties to Updating ²³⁹Pu(n, f) Cross-section Covariances in the Neutron Data Standards Database

doi: 10.1016/j.nds.2019.12.005
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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
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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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2016NE02      Nucl.Data Sheets 131, 289 (2016)

D.Neudecker, T.N.Taddeucci, R.C.Haight, H.Y.Lee, M.C.White, M.E.Rising

The Need for Precise and Well-documented Experimental Data on Prompt Fission Neutron Spectra from Neutron-induced Fission of ²³⁹Pu

NUCLEAR REACTIONS ²³⁹Pu(n, F), E<20 MeV; calculated prompt fission En, In. Comparison with available data.

doi: 10.1016/j.nds.2015.12.005
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2015HA01      Nucl.Data Sheets 123, 130 (2015)

R.C.Haight, C.Y.Wu, H.Y.Lee, T.N.Taddeucci, B.A.Perdue, J.M.O'Donnell, N.Fotiades, M.Devlin, J.L.Ullmann, T.A.Bredeweg, M.Jandel, R.O.Nelson, S.A.Wender, D.Neudecker, M.E.Rising, S.Mosby, S.Sjue, M.C.White, B.Bucher, R.Henderson

The LANL/LLNL Prompt Fission Neutron Spectrum Program at LANSCE and Approach to Uncertainties

NUCLEAR REACTIONS ²³⁹Pu(n, F), E<15 MeV; analyzed available data; deduced possible prompt fission neutron spectra σ, yields, correlation matrices.

doi: 10.1016/j.nds.2014.12.023
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2015NE02      Nucl.Data Sheets 123, 146 (2015)

D.Neudecker, P.Talou, T.N.Taddeucci, R.C.Haight, T.Kawano, H.Y.Lee, D.L.Smith, R.Capote, M.E.Rising, M.C.White

Preliminary Evaluation and Uncertainty Quantification of the Prompt Fission Neutron Spectrum of ²³⁹Pu

NUCLEAR REACTIONS ²³⁹Pu(n, X), E<20 MeV; calculated σ correlation matrices, prompt fission neutron spectrum and associated covariances. ENDF/B-VII.1 evaluated nuclear data library.

doi: 10.1016/j.nds.2014.12.026
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2015TA03      Nucl.Data Sheets 123, 135 (2015)

T.N.Taddeucci, R.C.Haight, H.Y.Lee, D.Neudecker, J.M.O'Donnell, M.C.White, B.A.Perdue, M.Devlin, N.Fotiadis, J.L.Ullmann, R.O.Nelson, T.A.Bredeweg, M.E.Rising, S.K.Sjue, S.A.Wender, C.Y.Wu, R.Henderson

Multiple-scattering Corrections to Measurements of the Prompt Fission Neutron Spectrum

NUCLEAR REACTIONS ²³⁹Pu(n, F), E<15 MeV; analyzed available data; deduced response functions, the shape of the prompt fission neutron spectrum.

doi: 10.1016/j.nds.2014.12.024
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2014AR09      Nucl.Data Sheets 119, 392 (2014)

C.W.Arnold, F.Tovesson, K.C.Meierbachtol, A.B.Laptev, T.A.Bredeweg, M.Jandel, R.O.Nelson, M.C.White

Precision Velocity Measurements of Fission Fragments Using the SPIDER Detector

doi: 10.1016/j.nds.2014.08.109
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2014HA27      Nucl.Data Sheets 119, 205 (2014)

R.C.Haight, H.Y.Lee, T.N.Taddeucci, J.M.O'Donnell, B.A.Perdue, N.Fotiades, M.Devlin, J.L.Ullmann, A.Laptev, T.Bredeweg, M.Jandel, R.O.Nelson, S.A.Wender, M.C.White, C.Y.Wu, E.Kwan, A.Chyzh, R.Henderson, J.Gostic

The Prompt Fission Neutron Spectrum (PFNS) Measurement Program at LANSCE

doi: 10.1016/j.nds.2014.08.057
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2014ME10      Nucl.Data Sheets 119, 389 (2014)

K.Meierbachtol, F.Tovesson, C.W.Arnold, A.B.Laptev, T.A.Bredeweg, M.Jandel, R.O.Nelson, M.C.White

Development of an Ionization Chamber for the SPIDER Fission Fragment Detector

doi: 10.1016/j.nds.2014.08.108
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2011CH57      Nucl.Data Sheets 112, 2887 (2011)

M.B.Chadwick, M.Herman, P.Oblozinsky, M.E.Dunn, Y.Danon, A.C.Kahler, D.L.Smith, B.Pritychenko, G.Arbanas, R.Arcilla, R.Brewer, D.A.Brown, R.Capote, A.D.Carlson, Y.S.Cho, H.Derrien, K.Guber, G.M.Hale, S.Hoblit, S.Holloway, T.D.Johnson, T.Kawano, B.C.Kiedrowski, H.Kim, S.Kunieda, N.M.Larson, L.Leal, J.P.Lestone, R.C.Little, E.A.McCutchan, R.E.MacFarlane, M.MacInnes, C.M.Mattoon, R.D.McKnight, S.F.Mughabghab, G.P.A.Nobre, G.Palmiotti, A.Palumbo, M.T.Pigni, V.G.Pronyaev, R.O.Sayer, A.A.Sonzogni, N.C.Summers, P.Talou, I.J.Thompson, A.Trkov, R.L.Vogt, S.C.van der Marck, A.Wallner, M.C.White, D.Wiarda, P.G.Young

ENDF/B-VII.1 Nuclear Data for Science and Technology: Cross Sections, Covariances, Fission Product Yields and Decay Data

COMPILATION Z=1-118; compiled, analyzed decay data, Maxwellian averaged neutron capture σ, neutron-induced fission σ.

NUCLEAR REACTIONS ^1,2H, ³He, ^6,7Li, ^7,9Be, ^10,11B, C, ^14,15N, ^16,17O, ¹⁹F, ^22,23Na, ^24,25,26Mg, ²⁷Al, ^28,29,30Si, ³¹P, ^32,33,34,36S, ^35,37Cl, ^36,38,40Ar, ^39,40,41K, ^{40,42,43,44,46,48}Ca, ⁴⁵Sc, ^{46,47,48,49,50}Ti, ^50,51V, ^50,52,53,54Cr, ⁵⁵Mn, ^54,56,57,58Fe, ^58,59Co, ^{58,59,60,61,62,64}Ni, ^63,65Cu, ^{65,66,67,68,70}Zn, ^69,71Ga, ^{70,72,73,74,76}Ge, ^74,75As, ^{74,76,77,78,79,80,82}Se, ^79,81Br, ^{78,80,82,83,84,85,86}Kr, ^85,86,87Rb, ^{84,86,87,88,89,90}Sr, ^89,90,91Y, ^{90,91,92,93,94,95,96}Zr, ^93,94,95Nb, ^{92,94,95,96,97,98,99,100}Mo, ⁹⁹Tc, ^{96,98,99,100,101,102,103,104,105,106}Ru, ^103,105Rh, ^{102,104,105,106,107,108,110}Pd, ^{107,109,110,111}Ag, ^{106,108,110,111,112,113,114,115,116}Cd, ^113,115In, ^{112,113,114,115,116,117,118,119,120,122,123,124,125,126}Sn, ^{121,123,124,125,126}Sb, ^{120,122,123,124,125,126,127,128,129,130,132}Te, ^{127,129,130,131,135}I, ^{123,124,126,128,129,130,131,132,133,134,135,136}Xe, ^{133,134,135,136,137}Cs, ^{130,132,133,134,135,136,137,138,140}Ba, ^138,139,140La, ^{136,138,139,140,141,142,143,144}Ce, ^141,142,143Pr, ^{142,143,144,145,146,147,148,150}Nd, ^{147,148,149,151}Pm, ^{144,147,148,149,150,151,152,153,154}Sm, ^{151,152,153,154,155,156,157}Eu, ^{152,153,154,155,156,157,158,160}Gd, ^159,160Tb, ^{156,158,160,161,162,163,164}Dy, ^165,166Ho, ^{162,164,166,167,168,170}Er, ^168,169,170Tm, ^175,176Lu, ^{174,176,177,178,179,180}Hf, ^180,181,182Ta, ^{180,182,183,184,186}W, ^185,187Re, ^191,193Ir, ¹⁹⁷Au, ^{196,198,199,200,201,202,204}Hg, ^203,205Tl, ^{204,206,207,208}Pb, ²⁰⁹Bi, ^{223,224,225,226}Ra, ^225,226,227Ac, ^{227,228,229,230,231,232,233,234}Th, ^{229,230,231,232,233}Pa, ^{230,231,232,233,234,235,236,237,238,239,240,241}U, ^{234,235,236,237,238,239}Np, ^{236,237,238,239,240,241,242,243,244,246}Pu, ^{240,241,242,243,244}Am, ^{240,241,242,243,244,245,246,247,248,249,250}Cm, ^{245,246,247,249,250}Bk, ^{246,248,249,250,251,252,253,254}Cf, ^{251,252,253,254,255}Es, ²⁵⁵Fm(n, γ), E=30 keV; calculated Maxwellian-averaged σ using ENDF/B-VII.1 evaluated neutron library. Comparison with ENDF/B-VII.0 and KADONIS values.

NUCLEAR REACTIONS ^{227,228,229,230,231,232,233,234}Th, ^{229,230,231,232,233}Pa, ^{230,231,232,233,234,235,236,237,238,239,240,241}U, ^{234,235,236,237,238,239}Np, ^{236,237,238,239,240,241,242,243,244,246}Pu, ^{240,241,242,243,244}Am, ^{240,241,242,243,244,245,246,247,248,249,250}Cm, ^{245,246,247,249,250}Bk, ^{246,248,249,250,251,252,253,254}Cf, ^{251,252,253,254,255}Es, ²⁵⁵Fm(n, γ), (n, F), E=thermal; calculated thermal σ. Comparison with ENDF/B-VII.0, JENDL-4.0 and Atlas of Neutron Resonances values.

doi: 10.1016/j.nds.2011.11.002
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Data from this article have been entered in the EXFOR database. For more information, access X4 dataset23170.

2010TA15      Nucl.Sci.Eng. 166, 254 (2010)

P.Talou, T.Kawano, D.G.Madland, A.C.Kahler, D.K.Parsons, M.C.White, R.C.Little, M.B.Chadwick

Uncertainty Quantification of Prompt Fission Neutron Spectrum for n(0.5 MeV) + ²³⁹Pu

NUCLEAR REACTIONS ²³⁹Pu(n, F), E<0.5 MeV; calculated fission spectrum uncertainties, probability distribution functions; deduced correlation matrix. Madland-Nix model.

doi: 10.13182/NSE09-10
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2009CH04      Ann.Nucl.Energy 36, 258 (2009)

M.B.Chadwick, R.C.Little, T.Kawano, P.Talou, D.Viera, M.Jandel, T.A.Bredeweg, M.C.White, A.P.Tonchev, J.A.Becker

Actinide ENDF/B-VII cross-section evaluations and validation testing

NUCLEAR REACTIONS ²⁴¹Am(n, γ), E < 1000 MeV; ²⁴¹Am(n, 2n), E < 20 MeV; analyzed cross sections. ²³⁹Pu(n, X), E=1.0 MeV; ²³⁸U(n, γ), E < 1.0 MeV; calculated cross sections.

doi: 10.1016/j.anucene.2008.11.011
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2006CH50      Nucl.Data Sheets 107, 2931 (2006)

M.B.Chadwick, P.Oblozinsky, M.Herman, N.M.Greene, R.D.McKnight, D.L.Smith, P.G.Young, R.E.MacFarlane, G.M.Hale, S.C.Frankle, A.C.Kahler, T.Kawano, R.C.Little, D.G.Madland, P.Moller, R.D.Mosteller, P.R.Page, P.Talou, H.Trellue, M.C.White, W.B.Wilson, R.Arcilla, C.L.Dunford, S.F.Mughabghab, B.Pritychenko, D.Rochman, A.A.Sonzogni, C.R.Lubitz, T.H.Trumbull, J.P.Weinman, D.A.Brown, D.E.Cullen, D.P.Heinrichs, D.P.McNabb, H.Derrien, M.E.Dunn, N.M.Larson, L.C.Leal, A.D.Carlson, R.C.Block, J.B.Briggs, E.T.Cheng, H.C.Huria, M.L.Zerkle, K.S.Kozier, A.Courcelle, V.Pronyaev, S.C.van der Marck

ENDF/B-VII.0: Next Generation Evaluated Nuclear Data Library for Nuclear Science and Technology

doi: 10.1016/j.nds.2006.11.001
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2003CH80      Nucl.Sci.Eng. 144, 157 (2003)

M.B.Chadwick, P.G.Young, R.E.MacFarlane, M.C.White, R.C.Little

Photonuclear Physics in Radiation Transport - I: Cross Sections and Spectra

NUCLEAR REACTIONS ^206,207,208Pb, ¹⁸⁴W, ¹⁸¹Ta, ⁶³Cu, ⁴⁰Ca, ²⁸Si, ²⁷Al, ¹⁶O, ¹²C(γ, X), (γ, nX), E < 150 MeV; calculated absorption, photoneutron production σ. Comparison with data.

doi: 10.13182/NSE144-157
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2003WH01      Nucl.Sci.Eng. 144, 174 (2003)

M.C.White, R.C.Little, M.B.Chadwick, P.G.Young, R.E.MacFarlane

Photonuclear Physics in Radiation Transport - II: Implementation

doi: 10.13182/NSE144-174
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