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1. (WO2013111844) SEMICONDUCTOR RADIATION DETECTOR AND NUCLEAR MEDICAL DIAGNOSIS DEVICE

Pub. No.:    WO/2013/111844    International Application No.:    PCT/JP2013/051542
Publication Date: Fri Aug 02 01:59:59 CEST 2013 International Filing Date: Sat Jan 26 00:59:59 CET 2013
IPC: G01T 1/24
G01T 1/161
Applicants: HITACHI, LTD.
株式会社日立製作所
Inventors: KOMINAMI Shinya
小南 信也
Title: SEMICONDUCTOR RADIATION DETECTOR AND NUCLEAR MEDICAL DIAGNOSIS DEVICE
Abstract:
Provided is a thallium bromide semiconductor radiation detector which, even when used in a long-term measurement, undergoes little increase in noise and has stable measuring performance. Also provided is a nuclear medical diagnosis device in which the detector is used. The semiconductor radiation detector (101A) includes a thallium bromide as a semiconductor crystal (111) sandwiched between a cathode and an anode (112, 113). The detector has a configuration in which the surfaces of the semiconductor crystal (111) other than the surfaces covered with the cathode and the anode (112, 113) have been coated with a passive layer (114) constituted of a fluoride of thallium or a chloride of thallium or constituted of a mixture of either of the two with a bromide of thallium.