| 摘要 |
<p>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.</p> |
