Microcomputer-controlled perturbed angular correlation spectrometer

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Abstract
A four‐detector time‐differential perturbed angular correlation spectrometer controlled by an inexpensive microcomputer is described. The use of twin‐single‐channel analyzers permits each detector to identify both gamma rays in the cascade. An improved gating logic system reduces the MCA/computer deadtime and allows larger sample activity and faster data accumulation. The twin‐single‐channel analyzer and gating circuit additions also permit simultaneous accumulation of two statistically independent sets of four‐channel spectra. The spectrometer provides on‐line display of raw data and the perturbation function derived from either set of four‐channel spectra.