TIME RESOLVED MICROWAVE SPECTROSCOPY IN INHOMOGENEOUS STARK FIELDS
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Date
1976
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Ohio State University
Abstract
Inhomogeneous Stark fields have been used to damp very quickly the free emission signals obtained by the Stark switching technique. Various experiments of this kind have been carried out and the most promising applications of the use of such fields are related to (a) the two pulse echo experiments and (b) the double nutation experiments. In echo experiments, the damping of the echo due to the molecular motion has been exhibited. The experimental time dependence of the echo amplitude does not follow the prediction obtained by a calculation based on the strong collision model. This may be interpreted as due to a contribution of the elastic molecular collisions. In the double nutation experiments, the use of inhomogeneous Stark fields improves the determination of the longitudinal relaxation time $T_{l}$.
Description
Author Institution: Laboratoire de Spectroscopie Hertzienne, C.N.R.S., Universit\'{e} de Lille I