SYSTEM AND METHOD FOR CONDITIONING A RADIATION DETECTOR

摘要

A system (10) and method for conditioning a photoconductive radiation detector (12) achieve charge redistribution within a photoconductive layer (16) without the need for charge removal or charge injection techniques. A first conditioning voltage is applied (46) across the detector to establish a first electric field. The first electric field is reversed relative to fields applied to the detector during image exposure and image read-out operations. While the first conditioning voltage is maintained, the photoconductive layer is exposed for a period of time to first conditioning radiation (48) having one or more wavelenghts selected to penetrate at least a portion of the photoconductive layer (16). A second conditioning voltage, less than the first conditioning voltage, then can be optionally applied (50) across the detector to establish a forward bias electric field. While the second conditioning voltage is maintained, the photoconductive layer (16) is exposed for a period of time to second. Broad spectrum conditioning radiation (52). The detector (12) can then be placed in a dark environment for a period of time, in a shorted condition, to dark-adapt the photoconductive layer (54).