Method for measuring airborne alpha and beta-ray emission of artificial origin, involves partly compensating radiation contributions of natural origin for alpha beta-pseudo discrimination by energy discrimination

摘要

The method involves partly compensating radiation contributions e.g. radon and thoron contributions, of a natural origin for alpha beta-pseudo coincidence discrimination by energy discrimination using an evaluation unit e.g. microprocessor (30). The evaluation unit is coupled with a semiconductor detector i.e. silicon surface barrier detector (10). Verification is made to check whether beta particle and alpha particle times strike successively within predetermined time on the semiconductor detector, during the alpha beta-pseudo coincidence discrimination. An independent claim is also included for a device for measuring airborne alpha and beta-ray emission of an artificial origin, comprising a semiconductor detector.