STIMULATED ECHO DESCRIPTION OF COHERENT RAMAN BEAT EPR SPECTROSCOPY

A theoretical description of the one-pulse and two-pulse coherent Rama n beat (CRB) EPR experiment based on the linear regime approximation i s presented. It is shown that both experiments are basically superposi tions of three-pulse stimulated echo experiments. Analytical expressio ns for the description of the CRB EPR experiments are given. The predi cted features are verified experimentally and by model calculations. I n particular, the delay and the blind spot behavior of the two-pulse C RB signal are examined as is the influence of the pulse length on the intensity of the one-pulse CRB signal.