TY - JOUR
T1 - R-matrix analysis of Cl neutron cross sections up to 1.2 MeV
AU - Sayer, R. O.
AU - Guber, K. H.
AU - Leal, L. C.
AU - Larson, N. M.
AU - Rauscher, T.
PY - 2006
Y1 - 2006
N2 - We have analyzed and evaluated Cl35, Cl37, and natCl neutron cross section data in the resolved resonance region with the multilevel Reich-Moore R-matrix formalism. Energies and widths were determined for 388 resonances in the range 0.2 to 1200 keV. New J assignments were made for 33 resonances, and parities were assigned for 15 of these resonances. Neutron strength functions were calculated for both s and p waves; our results include the first reported p-wave values for Cl. Resonance analyses were carried out with the computer code SAMMY, which utilizes Bayes' method, a generalized least-squares technique. Because SAMMY now has the ability to calculate charged-particle penetrabilities, it was possible to include a proton exit channel in the analysis and to deduce proton widths for several resonances. Our resonance parameter representation describes the data much better than pre-vious evaluations, and it should lead to improved criticality safety calculations for systems where Cl is present.
AB - We have analyzed and evaluated Cl35, Cl37, and natCl neutron cross section data in the resolved resonance region with the multilevel Reich-Moore R-matrix formalism. Energies and widths were determined for 388 resonances in the range 0.2 to 1200 keV. New J assignments were made for 33 resonances, and parities were assigned for 15 of these resonances. Neutron strength functions were calculated for both s and p waves; our results include the first reported p-wave values for Cl. Resonance analyses were carried out with the computer code SAMMY, which utilizes Bayes' method, a generalized least-squares technique. Because SAMMY now has the ability to calculate charged-particle penetrabilities, it was possible to include a proton exit channel in the analysis and to deduce proton widths for several resonances. Our resonance parameter representation describes the data much better than pre-vious evaluations, and it should lead to improved criticality safety calculations for systems where Cl is present.
UR - http://www.scopus.com/inward/record.url?scp=33645462893&partnerID=8YFLogxK
U2 - 10.1103/PhysRevC.73.044603
DO - 10.1103/PhysRevC.73.044603
M3 - Article
AN - SCOPUS:33645462893
SN - 0556-2813
VL - 73
JO - Physical Review C - Nuclear Physics
JF - Physical Review C - Nuclear Physics
IS - 4
M1 - 044603
ER -