Position-Sensitive Cryogenic Bolometer
Original Publication Date: 1987-Apr-01
Included in the Prior Art Database: 2005-Feb-01
A cryogenic bolometer for use as an X-ray detector has been described by Moseley, Mather, and McCammon (J. Appl. Phys. 56(5) p.1257, Sept. 1, 1984). This bolometer can be modified to provide position sensing, by incorporating multiple thermistors to determine the position of impact of an X-ray or charged particle. When a charged particle or high energy photon deposits energy in a material, the temperature of the material is raised. By using a material with a very low specific heat cooled to a low temperature (<1oK), it is possible to detect extremely small energy depositions with high precision. The use of low thermal mass implanted thermistors to measure the temperature rise allows considerable flexibility.