Triplet yield determination by E.S.R.

Abstract
A practical method is given for measuring inter-system crossing yields. It is applicable to triplets with lifetimes larger than 10-2 s. By using Snyder and Kornegay's programme, the intensity of the Δm = 2 spin resonance for a given number of randomly oriented triplets is computed as a function of zero-field-splitting and line width. The yield is then obtained by comparing the observed intensity to that of a standard with known yield.