1. L. T. Creagh, A. R. Kmetz, and R. A. Reynolds, IEEE Trans.ED-18. 672 (1971).
2. Vapor phase chromatography was performed with a 10% Dexsil® 300 on deactivated Chromosorb-P (80/100) in a 1/8′ 10′ column. Program rate was 8 deg/min from 200° to 400°C. Sample size was 0.1 microliter.
3. H. Kelker and B. Scheurle, Angew. Chem. International Edit.,9, 962 (1970).
4. G. H. Heilmeier, Proc. IEEE58, 422 (1971).
5. By the delay time is meant the time from the initial application of voltage until the onset of scattering. Rise time is the time from beginning of scattering of light to maximum scatter, and decay time is the time required for cessation of scattering after removal of bias.