Hydrogen Formation in the γ Radiolysis of Ethylene

Abstract
The radiolysis of ethylene‐d2 and C2H4–C2D4 mixtures has been investigated in the gas, liquid, and solid phases. The data indicate that hydrogen may be formed by two distinct molecular‐elimination processes: CH2CH2→CH2C+H2 and CH2CH2→CH≡CH+H2. The effect of xenon and pressure on the yields of H2, HD, and D2 in the gas‐phase radiolysis of CH2CD2 has been investigated. The results for the (2P1)Hg‐sensitized and the 1237 A‐photochemical decomposition have been compared with those for radiolysis.