Abstract
Publisher Summary This chapter discusses a multidimensional pulse-height analyzer in which successive pulse heights or time delays from various detectors are recorded as successive binary numbers on magnetic tape via a 256-channel analog to digital converter. The magnetic tape with the primary three-dimensional information may be sorted event by event on the IBM 7094 computer. Various programs of the computer permit the spectrum in one dimension to be displayed in association with any combination of pulse heights in the other two dimensions. The study of spontaneous fission is concerned with gamma-ray spectroscopy. Nuclear spectroscopic information on the energy levels is gained in the region of nuclei near the double magic Sn132. As a result of the experiments described in the chapter, many completely resolved gamma rays in the energy region up to approximately 500 keV have been seen and the expected Doppler shifts have been observed for those gamma rays, which are emitted in less than a nanosecond—the approximate flight time from fission source to detector.
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