Neutrons and Related Gamma Ray Problems / Neutronen und Verwandte Gammastrahlprobleme

On the high energy side, this artic1e does not cover the cascade shower processes which are dealt 2 with in cosmic ray studies * In this connection it is recalled that the cascade shower process, which involves electrons and positrons besides X rays, becomes predominant above 10 Mev in heavy elements, and above 100 Mev in light ones.