A method of determining the bremsstrahlung flux-weighted average photonuclear cross section

Appl Radiat Isot. 2024 Mar 1;207:111258. doi: 10.1016/j.apradiso.2024.111258. Online ahead of print.ABSTRACTBased on a developed analytical model, a method is proposed for measuring the photonuclear cross section averaged over bremsstrahlung flux without application of additional target-monitor of photon flux. The method involves the use of a thin isotopic target, that completely overlaps the photon beam (a photonuclear converter), as well as an algorithm for processing the data on the yield of a reaction under study in such a target. The novel technique was validated on the reactions 100Mo(γ,n)99Mo and 58Ni(γ,n)57Ni in the range of photon end-point energy of 40.7-93.9 MeV. The photon flux-weighted average cross sections of the reactions measured experimentally are in good agreement with Monte Carlo simulations and TALYS predictions on their excitation functions.PMID:38460484 | DOI:10.1016/j.apradiso.2024.111258

Source: Applied Radiation and Isotopes - March 9, 2024 Category: Radiology Authors: V L Uvarov A A Zakharchenko N P Dikiy Yu V Lyashko R I Pomatsalyuk Source Type: research