A High Speed Photoelectric Spectrometer by Using the Sampling Technique
1968 Volume 37 Issue 1 Pages 34-42
Details
1968 Volume 37 Issue 1 Pages 34-42
The. sampling technique is one of the best ways in the high-speed spectrometric methods for analyzing periodically repeatable weak light with short duration. A high speed spectrometer by using a novel photomultiplier gate for signal sampling is described together with a part of the experimental results for demonstrating the instrumental performance. The signal processing electronics, which is used in conjunction with a conventional spectrometer, is composed of the signal sampling photomultiplier circuit, a light source triggering generator and a linear delay system which determines the phase relationship between the light source triggering pulse and the sampling pulse. This apparatus makes it possible accurately to display either time-resolved spectra or rise and decay curves of radiations on a X-Y recorder by simply switching a mode selector. A minimum time resolution of the instrument obtained is 10 nanosecond (10-8 second). The preparation of a jitter-free thyratron light pulser which is useful for testing such an instrument is also mentioned as well as its operational features.
