s-wave average neutron resonance parameters of 175Lu + n

Resonance energies Eλ, neutron widths Tn,λ, and radiation widths Tγ ,λ for the compound system 175Lu + n were determined up to 1 keV from time-of-flight data reported in literature and recently measured at the GELINA facility of JRC-Geel (Belgium). The statistical analysis of the obtained resonance parameters provides an swave neutron strength function [S0 = 1.96(8)], mean level spacing [D0 = 3.24(9) eV], and average radiation width ( = 61.3(59) meV) which are substantially different from those compiled in libraries dedicated to statistical calculations. The largest difference lies on the average radiation width, for which a value of 77(5) meV is recommended. 175Lu neutron cross sections were calculated with the TALYS code by using our s-wave average parameters as constraints. At kT = 30 keV, we obtain a total neutron capture cross section equal to 1125(62) mbarns, confirming the lower values reported in the 1990s.

NOGUERE G.;  BOULAND O.;  HEYSE Jan;  KOPECKY Stefan;  PARADELA DOBARRO Carlos;  SCHILLEBEECKX Peter;  EBRAN A;  ROIG O; 

2020-09-01

AMER PHYSICAL SOC

JRC120884

2469-9985 (online),   

https://publications.jrc.ec.europa.eu/repository/handle/JRC120884,   

10.1103/PhysRevC.100.065806 (online),