抄録
The analytical method of finding the kind of element and the amount of dose by the use of radiation spectrum patterns is well known to be convenient, for it needs no complicated chemical processes. The apparatus used for these purposes, the pulse height analyzer, is in two types, single-channel pulse height analyzer and multi-channel pulse height analyzer. The latter is made up of a scintillation detector, a linear amplifier, an A-D converter, a digital computer, a readout circuit, a power supply, and some other circuits. In using this apparatus for gamma-ray energy measurement, principle of its operation, construction and characteristics of its component parts should be well acquainted with, for its performance is much involved in comparison with that of single-channel pulse height analyzer.
In the course of years, 1956-1959, transistorization of 100-channel and 400-channel pulse height analyzers was carried out and their respective parts were studied with the results that the analyzers have good linearity within 1% of deviation for radiation energy, stability within 1%/day of fluctuation, and dead time of (28+0.5N)μsec. Particulars of these analyzers are given in this paper.
