Partial-wave analysis of n+Am241 reaction cross sections in the resonance region

Abstract : Cross sections for neutron-induced reactions of Am241 in the resonance region have been evaluated. Results of time-of-flight cross section experiments carried out at the GELINA, LANSCE, ORELA and Saclay facilities have been combined with optical model calculations to derive consistent cross sections from the thermal energy region up to the continuum region. Resolved resonance parameters were derived from a resonance shape analysis of transmissions, capture yields, and fission yields in the energy region up to 150 eV using the refit code. From a statistical analysis of these parameters, a neutron strength function (104S0=1.01±0.12), mean level spacing (D0=0.60±0.01 eV) and average radiation width (⟨Γγ0⟩=43.3±1.1 meV) for s-wave resonances were obtained. Neutron strength functions for higher partial waves (l>0) together with channel and effective scattering radii were deduced from calculations based on a complex mean-field optical model potential, applying an equivalent hard-sphere scattering radius approximation.
Document type :
Journal articles
Complete list of metadatas

http://hal.in2p3.fr/in2p3-01183042
Contributor : Emmanuelle Vernay <>
Submitted on : Thursday, August 6, 2015 - 8:56:39 AM
Last modification on : Thursday, February 7, 2019 - 2:57:46 PM

Identifiers

Citation

G. Noguere, O. Bouland, S. Kopecky, C. Lampoudis, P. Schillebeeckx, et al.. Partial-wave analysis of n+Am241 reaction cross sections in the resonance region. Physical Review C, American Physical Society, 2015, 92, pp.014607. ⟨10.1103/PhysRevC.92.014607⟩. ⟨in2p3-01183042⟩

Share

Metrics

Record views

106