$s$-wave average neutron resonance parameters of $^{175}\mathrm{Lu}+n$ - Archive ouverte HAL
Article Dans Une Revue Phys.Rev.C Année : 2019

$s$-wave average neutron resonance parameters of $^{175}\mathrm{Lu}+n$

G. Noguere
  • Fonction : Auteur
O. Bouland
  • Fonction : Auteur
J. Heyse
  • Fonction : Auteur
S. Kopecky
  • Fonction : Auteur
C. Paradela
  • Fonction : Auteur
P. Schillebeeckx
  • Fonction : Auteur

Résumé

Resonance energies Eλ, neutron widths Γn,λ, and radiation widths Γγ,λ for the compound system $^{175}$Lu+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 s-wave neutron strength function [S0=1.96(8)], mean level spacing [D0=3.24(9)eV], and average radiation width (〈Γγ0〉=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. $^{175}$Lu neutron cross sections were calculated with the talys code by using our s-wave average parameters as constraints. At kT=30keV, we obtain a total neutron capture cross section equal to 1125(62) mbarns, confirming the lower values reported in the 1990s.

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Dates et versions

hal-02447879 , version 1 (21-01-2020)

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Citer

G. Noguere, O. Bouland, J. Heyse, S. Kopecky, C. Paradela, et al.. $s$-wave average neutron resonance parameters of $^{175}\mathrm{Lu}+n$. Phys.Rev.C, 2019, 100 (6), pp.065806. ⟨10.1103/PhysRevC.100.065806⟩. ⟨hal-02447879⟩

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