Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1682060 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2010 | 6 Pages |
Abstract
Partial γ-ray cross-sections were calculated using GNASH, an enhanced Hauser-Feshbach statistical nuclear reaction model code, and compared with the experimental results. The particle transmission coefficients were calculated with new systematic “global” optical model potential parameters. A coupled-channels optical model based on a soft rotor model was employed to calculate the particle transmission coefficients. The pre-equilibrium part of the spin-distribution in 150Sm was calculated using the quantum mechanical theory of Feshbach, Kerman, and Koonin (FKK) and incorporated into the GNASH reaction model code. The partial cross-sections for discrete γ-ray cascade paths leading to the ground state in 149Sm and 148Sm have been summed (without double counting) to estimate lower limits for reaction cross-sections. These lower limits are combined with Hauser-Feshbach model calculations to deduce the reaction channel cross-sections. These reaction channel cross-sections agree with previously measured experimental and ENDF/B-VII evaluations.
Keywords
Related Topics
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Materials Science
Surfaces, Coatings and Films
Authors
D. Dashdorj, G.E. Mitchell, T. Kawano, M. Devlin, N. Fotiades, R.O. Nelson, J.A. Becker, C.Y. Wu, P.E. Garrett, S. Kuneida,