NSR Query Results
Output year order : Descending NSR database version of April 27, 2024. Search: Author = B.Forget Found 4 matches. 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
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
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
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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