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NSR database version of April 11, 2024.

Search: Author = V.Sobes

Found 14 matches.

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2023LE13      Eur.Phys.J. N 9, 34 (2023)

A.M.Lewis, A.D.Carlson, D.L.Smith, D.P.Barry, R.C.Block, S.Croft, Y.Danon, M.Drosg, M.W.Herman, D.Neudecker, N.Otuka, H .Sjostrand, V.Sobes

Templates of expected measurement uncertainties for total neutron cross-section observables

doi: 10.1051/epjn/2023018
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2023LE14      Eur.Phys.J. N 9, 33 (2023)

A.M.Lewis, D.Neudecker, A.D.Carlson, D.L.Smith, I.Thompson, A.Wallner, D.P.Barry, L.A.Bernstein, R.C.Block, S.Croft, Y.Danon, M.Drosg, R.C.Haight, M.W.Herman, H.Y.Lee, N.Otuka, H.Sjostrand, V.Sobes

Templates of expected measurement uncertainties for neutron-induced capture and charged-particle production cross section observables

doi: 10.1051/epjn/2023015
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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
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2022DU03      Phys.Rev. C 105, 024601 (2022)

P.Ducru, V.Sobes

Definite complete invariant parametrization of R-matrix theory

NUCLEAR REACTIONS 134Xe(n, n), E=21.83, 6.313 keV; calculated scattering matrices, total σ, elastic σ for spin-parity group 1/2- first and second p-wave resonances. Definite parametrization of R-matrix theory.

doi: 10.1103/PhysRevC.105.024601
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2022KO12      Phys. Rev. Res. 4, 021001 (2022)

K.Kolos, V.Sobes, R.Vogt, C.E.Romano, M.S.Smith, L.A.Bernstein, D.A.Brown, M.T.Burkey, Y.Danon, M.A.Elsawi, B.L.Goldblum, L.H.Heilbronn, S.L.Hogle, J.Hutchinson, B.Loer, E.A.McCutchan, M.R.Mumpower, E.M.O'Brien, C.Percher, P.N.Peplowski, J.J.Ressler, N.Schunck, N.W.Thompson, A.S.Voyles, W.Wieselquist, M.Zerkle

Current nuclear data needs for applications

doi: 10.1103/PhysRevResearch.4.021001
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2021DU11      Phys.Rev. C 103, 064608 (2021)

P.Ducru, B.Forget, V.Sobes, G.Hale, M.Paris

Shadow poles in the alternative parametrization of R matrix theory

NUCLEAR REACTIONS 134Xe(n, X), E=2186.0, 6315.0 eV p-wave resonances; analyzed neutron resonance parameters by R-matrix theory and using generalized Reich-Moore formalism to convert the Reich-Moore parameters into real R-matrix parameters; deduced existence of shadow poles in the alternative parametrization of R-matrix theory, being considered as an alternative to the traditional Wigner-Eisenbud resonance parameters to document nuclear cross-section values in the nuclear data libraries such as ENDF/B-VIII.0. Discussed how the nuclear reaction community could convert present nuclear data libraries featuring both Wigner-Eisenbud parameters and Reich-Moore parameters to alternative parameters. See also follow-up 2021Du12 article by the same authors about Scattering matrix pole expansions in R-matrix theory, and a related article 2021Du13 about windowed multipole representation in R-matrix cross sections.

doi: 10.1103/PhysRevC.103.064608
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2021DU12      Phys.Rev. C 103, 064609 (2021)

P.Ducru, B.Forget, V.Sobes, G.Hale, M.Paris

Scattering matrix pole expansions for complex wave numbers in R-matrix theory

NUCLEAR REACTIONS 134Xe(n, X), E=2186.0, 6315.0 eV p-wave resonances; analyzed radioactive state parameters and the R-matrix parameters to yield an identical Kapur-Peierls operator, and exact reconstruction of the scattering matrix of the nuclear interactions, scattering matrix poles are the Siegert-Humblet radioactive poles; discussed subthreshold cross sections through analytic continuation; conclude with the need for the R-matrix community to come to consensus and agreement to set the analytic continuation as the standard way of computing R-matrix operator, in particular, the shift and penetration functions, in performing nuclear reaction data evaluations for the evaluated libraries such as ENSDF, JEFF, BRONDE, JENDL, CENDL, and TENDEL. See also preceding 2021Du11 article by the same authors about shadow poles in the alternative parametrization in R-matrix theory, and a related article 2021Du13 about windowed multipole representation in R-matrix cross sections.

doi: 10.1103/PhysRevC.103.064609
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2021DU13      Phys.Rev. C 103, 064610 (2021)

P.Ducru, A.Alhajri, I.Meyer, B.Forget, V.Sobes, C.Josey, J.Liang

Windowed multipole representation of R-matrix cross sections

NUCLEAR REACTIONS 134Xe(n, X), E=2186.0, 6315.0 eV p-wave resonances; 238U(n, X), E=6.67428 eV resonance; analyzed and derived the windowed multipole representation of nuclear cross sections through physical and mathematical equivalents to R-matrix cross sections, with the inclusion on temperature treatment of angle-integrated cross sections, and Doppler broadening as the averaging of cross sections over the thermal motion of the target atoms, and important in neutron transport applications such as stability of many nuclear reactors with negative thermal reactivity. Discussed collaborative effort to establish a new nuclear cross-section library format the Windowed Multipole Library representing R-matrix cross sections constructed by finding the poles of the Kapur-Peierls operator and performing Hwang's conjugate continuation, thus connecting the windowed multipole representation to both the Bloch and Wigner-Eisenbud R-matrix theory and to the Humblet-Rosenfeld pole expansions in wave-number space. See also preceding 2021Du11 and 2021Du12 articles by three of the same authors about shadow poles in the alternative parametrization and scattering matrix pole expansions in R-matrix theory.

doi: 10.1103/PhysRevC.103.064610
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2021SO18      Ann.Nucl.Energy 160, 108353 (2021)

V.Sobes, A.Holcomb, B.J.Marshall, T.Greene, D.Wiarda, W.Wieselquist

Augmented ENDF/B-VIII.0 covariance library for SCALE 6.3

doi: 10.1016/j.anucene.2021.108353
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2021SO25      Ann.Nucl.Energy 164, 108605 (2021)

V.Sobes, C.de Saint Jean, D.Rochman, O.Cabellos, An.Holcomb, E.Bauge, R.Capote, A.Trkov, M.Fleming

WPEC Subgroup 44 computational Inter-comparison exercise on correlations in nuclear data libraries

NUCLEAR REACTIONS 235U, 239Pu(n, F), (n, γ), E=0.05-20 MeV; analyzed available data; deduced correlations in nubar, σ using ENDF/B-VIII.0, JEFF-3.3, JENDL-4 libraries.

doi: 10.1016/j.anucene.2021.108605
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2021SO33      Sci. Rep. 11, 19646 (2021)

V.Sobes, B.Hiscox, E.Popov, R.Archibald, C.Hauck, B.Betzler, K.Terrani

AI-based design of a nuclear reactor core

doi: 10.1038/s41598-021-98037-1
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2018BR05      Nucl.Data Sheets 148, 1 (2018)

D.A.Brown, M.B.Chadwick, R.Capote, A.C.Kahler, A.Trkov, M.W.Herman, A.A.Sonzogni, Y.Danon, A.D.Carlson, M.Dunn, D.L.Smith, G.M.Hale, G.Arbanas, R.Arcilla, C.R.Bates, B.Beck, B.Becker, F.Brown, R.J.Casperson, J.Conlin, D.E.Cullen, M.-A.Descalle, R.Firestone, T.Gaines, K.H.Guber, A.I.Hawari, J.Holmes, T.D.Johnson, T.Kawano, B.C.Kiedrowski, A.J.Koning, S.Kopecky, L.Leal, J.P.Lestone, C.Lubitz, J.I.Marquez Damian, C.M.Mattoon, E.A.McCutchan, S.Mughabghab, P.Navratil, D.Neudecker, G.P.A.Nobre, G.Noguere, M.Paris, M.T.Pigni, A.J.Plompen, B.Pritychenko, V.G.Pronyaev, D.Roubtsov, D.Rochman, P.Romano, P.Schillebeeckx, S.Simakov, M.Sin, I.Sirakov, B.Sleaford, V.Sobes, E.S.Soukhovitskii, I.Stetcu, P.Talou, I.Thompson, S.van der Marck, L.Welser-Sherrill, D.Wiarda, M.White, J.L.Wormald, R.Q.Wright, M.Zerkle, G.Zerovnik, Y.Zhu

ENDF/B-VIII.0: The 8 th Major Release of the Nuclear Reaction Data Library with CIELO-project Cross Sections, New Standards and Thermal Scattering 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, 9Be, 10,11B, 12,13C, 14,15N, 16,17,18O, 19F, 20,21,22Ne, 22,23Na, 24,25,26Mg, 26,27Al, 28,29,30,31,32Si, 31P, 32,33,34,35,36S, 35,36,37Cl, 36,37,38,39,40,41Ar, 39,40,41K, 40,41,42,43,44,45,46,47,48Ca, 45Sc, 46,47,48,49,50Ti, 49,50,51V, 50,51,52,53,54Cr, 54,55Mn, 54,55,56,57,58Fe, 58,59Co, 58,59,60,61,62,63,64Ni, 63,64,65Cu, 64,65,66,67,68,69,70Zn, 69,70,71Ga, 70,71,72,73,74,75,76Ge, 73,74,75As, 74,75,76,77,78,79,80,81,82Se, 79,80,81Br, 78,79,80,81,82,83,84,85,86Kr, 85,86,87Rb, 84,85,86,87,88,89,90Sr, 89,90,91Y, 90,91,92,93,94,95,96Zr, 93,94,95Nb, 92,93,94,95,96,97,98,99,100Mo, 98,99Tc, 96,97,98,99,100,101,102,103,104,105,106Ru, 103,104,105Rh, 102,103,104,105,106,107,108,109,110Pd, 107,108,109,110,111,112,113,114,115,116,117,118Ag, 106,107,108,109,110,111,112,113,114,115,116Cd, 113,114,115In, 112,113,114,115,116,117,118,119,120,121,122,123,124,125,126Sn, 121,122,123,124,125,126Sb, 120,121,122,123,124,125,126,127,128,129,130,121,132Te, 127,128,129,130,131,132,133,134,135I, 123,124,125,126,127,128,129,130,131,132,133,134,135,136Xe, 133,134,135,136,137Cs, 130,131,132,133,134,135,136,137,138,139,140Ba, 138,139,140La, 136,137,138,139,140,141,142,143,144Ce, 141,142,143Pr, 142,143,144,145,146,147,148,149,150Nd, 143,144,145,146,147,148,149,151Pm, 144,145,146,147,148,149,150,151,152,153,154Sm, 151,152,153,154,155,156,157Eu, 152,153,154,155,156,157,158,159,160Gd, 158,159,160,161Tb, 154,155,156,157,158,159,160,161,162,163,164Dy, 165,166Ho, 162,163,164,165,166,167,168,170,170Er, 168,169,170,171Tm, 168,169,170,171,172,173,174,175,176Yb, 175,176Lu, 174,175,176,177,178,179,180,181,182Hf, 180,181,182Ta, 180,181,182,183,184,185,186W, 185,186,187Re, 184,185,186,187,188,189,190,191,192Os, 191,192,193Ir, 190,191,192,193,194,195,196,197,198Pt, 197Au, 196,197,198,199,200,201,202,203,204Hg, 203,204,205Tl, 204,205,206,207,208,209,210Pb, 209,210Bi, 208,209,210Po, 223,224,225,226Ra, 225,226,227Ac, 227,228,229,230,231,232,233,234Th, 229,230,231,232,233Pa, 230,231,232,233,234,235,236,237,238,239,240,241U, 234,235,236,237,238,239Np, 236,237,238,239,240,241,242,243,244,245,246Pu, 240,241,242,243,244Am, 240,241,242,243,244,245,246,247,248,249,250Cm, 245,246,247,248,249,250Bk, 246,247,248,249,250,251,252,253,254Cf, 251,252,253,254,255Es, 255Fm(n, γ), E=30 keV; calculated Maxwellian-averaged σ using ENDF/B-VIII.0 evaluated neutron library. Comparison with ENDF/B-VII.1 and KADONIS values.

NUCLEAR REACTIONS 227,228,229,230,231,232,233,234Th, 229,230,231,232,233Pa, 230,231,232,233,234,235,236,237,238,239,240,241U, 234,235,236,237,238,239Np, 236,237,238,239,240,241,242,243,244,245,246Pu, 240,241,242,243,244Am, 240,241,242,243,244,245,246,247,248,249,250Cm, 245,246,247,248,249,250Bk, 246,247,248,249,250,251,252,253,254Cf, 251,252,253,254,255Es, 255Fm(n, γ), (n, F), E=thermal; calculated thermal σ. Comparison with ENDF/B-VII.1, JENDL-4.0u+ and Atlas of Neutron Resonances values.

doi: 10.1016/j.nds.2018.02.001
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2014PE09      Nucl.Data Sheets 118, 158 (2014)

P.Pereslavtsev, U.Fischer, A.Konobeyev, V.Sobes, L.Leal

New Evaluation of n+63, 65Cu Nuclear Cross Section Data up to 200 MeV Neutron Energy

NUCLEAR REACTIONS 63,65Cu(n, x), E=0-200 MeV; calculated, evaluate σ, σ(Eout), covariances using TALYS code. Compared with evaluated libraries and data.

doi: 10.1016/j.nds.2014.04.025
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2014SO08      Nucl.Data Sheets 118, 155 (2014)

V.Sobes, L.C.Leal, K.Guber, B.Forget, S.Kopecky, P.Schillebeeckx, P.Siegler

New Resolved Resonance Region Evaluation for 63, 65Cu for Nuclear Criticality Safety Program

NUCLEAR REACTIONS 63,65Cu(n, γ), E=reactor; calculated σ using Reich-Moore version of R-matrix theory; deduced new resonance regions.

doi: 10.1016/j.nds.2014.04.024
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