Modeling photon--induced reactions on $^{233-238}$U actinide targets

TL;DR

This paper presents detailed statistical model calculations of photon-induced reaction cross sections on uranium isotopes, comparing results with experimental data and evaluations to improve understanding of fission processes.

Contribution

It introduces the use of the extended optical model for fission in modeling photon-induced reactions on uranium isotopes, enhancing data description and parameter consistency.

Findings

Extended optical model improves data fit for fission cross sections.

Comparison reveals similarities and differences between photon- and neutron-induced reactions.

Results support refined barrier parameter determination.

Abstract

Comprehensive calculations of cross sections of photon induced reactions on $^{233-238}$U targets for incident photon energies from 3 up to 30 MeV are undertaken with the statistical model code EMPIRE-3.2 Malta. Results are compared with the experimental data from EXFOR and with the current evaluations. The differences and the similarities between the models and parameters used in calculations of photon- and neutron-induced reactions on the same nuclei are discussed with focus on fission. The role of the extended optical model for fission in improving the description of the measured data and in determining consistent sets of barrier parameters is pointed out.