A personal alpha-in-air alarm monitoring instrument

A new personal air sampler for alpha-active nuclides, with integral electronics and alarm is described. The technical description includes details about the filter holder, the detector, the electronics, the software, the readout and the calibration. Applications for the instrument include routine personnel monitoring in areas where nuclear fuel is handled, e.g. reprocessing plants, and special personnel monitoring during abnormal operations in actinide laboratories, e.g. during glove changes on a glove box. (U.K.)