Gamma quantum and alpha particle counters based on GaAs detectors

In the paper, results of development and preliminary tests for counters of the gamma quantum and /spl alpha/-particles using the detectors on GaAs, compensated by Cr are presented. It is shown that GaAs detectors allows to create high-speed and selective ionizing radiation counters. It is founded that radiating stability of GaAs detectors exceeds 5 MRad and 50 MRad at irradiation by protons (E/sub p/ = 1GeV) and gamma quantums (E/sub /spl gamma//= 1MeV), accordingly.