POSITRONIUM FORMATION IN NON-POLAR SOLVENTS - A COMPARATIVE-STUDY OF THE INFLUENCE OF CHLORINATED ETHANES, ETHENES AND CYCLOHEXANES ON THE YIELD OF O-PS

Inhibition of positronium formation caused by different chlorocyclohexanes, chloroethanes and chloroethenes used as additives in cyclohexane, 2,2,4-trimethylpentane, benzene and n-hexane has been investigated by means of positron lifetime measurements. Chlorocyclohexanes and chloroethanes cause increased inhibition with increasing chlorine substitution. Comparisons with earlier results of chlorobenzenes show that the behaviour of the actual additives is quite different from that of the chlorobenzenes. The results are discussed in terms of the hot Ps-model" and the "spur-model". © 1979."