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

摘要

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 [241]Amalpha particles were measured at operating temperatures of up to 115 K. The inherent voltage of the detector was estimated.