Velocity-Range Relation for Fission Fragments

Abstract

In two recent notes(1,2) a number of features of the penetration of uranium fission fragments through matter as revealed by cloud-chamber photographs were discussed. In particular, it was pointed out that we have here to do with a
\nvelocity-range relation of a novel character which depends on the interplay between electron capture by the fragments over their entire range, and the ultimate stopping by nuclear collisions.