Radiation measurements by a cryogenic <i>pn</i> junction InSb detector with operating temperatures up to 115 K

Abstract

Pn junction-type radiation detectors were fabricated with an InSb substrate. The detectors had 1000 times higher resistances than those of previously reported Schottky-type detectors. The output pulses of the preamplifier were analyzed from the point of view of the contribution of electrons and holes. The energy spectra of Am241 alpha particles were measured at operating temperatures of up to 115 K. The inherent voltage of the detector was estimated.