Influence of secondary neutrons on alpha-particle induced reaction cross section measurement below the Coulomb barrier
Abstract
The influence of the secondary neutrons on measurements of alpha-particle activation cross sections below the Coulomb barrier was studied for the natPt(α,x)195mPt reaction. We characterized the secondary neutron field by using the particle transport simulation code PHITS, and estimated the natPt(n,x)195mPt yields by using the characterized neutron spectra and the natPt(n,x)195mPt cross sections in the JENDL-5/A library. We confirmed that the unexpectedly high natPt(α,x)195mPt cross sections below the Coulomb barrier measured by us are explained well by the natPt(n,x)195mPt reaction induced by the secondary neutrons. This indicates that the secondary neutron effect is sometimes not negligible even in low energy charged-particle activation cross section measurements. We also studied the influence of the secondary light charged particles by the same approach, and confirmed that their influence is negligible.
Turn this paper into a full lesson
ArcXiv compiles a staged curriculum from this paper: 8-12 lessons across beginner → advanced, synthesised section guides, visuals, flashcards, a quiz, exercises, and on-demand deep dives per section. Grounded in the abstract, never invented.