Positron Annihilation in Some Organic Compounds

Abstract

The intensity I₂ and the mean life τ₂ of the long‐lived component in positron decay have been measured in a number of organic halides using a fast time to pulse‐height converter. In general, compounds containing a chlorine atom showed an I₂ of about 16%, those containing bromine an I₂ of about 10%, and those containing iodine an I₂ of about 4%. The τ₂ values for a number of organic compounds containing chlorine varied from 1 to 2 n sec.