Radiation detected value forecasting method and forecast responsive radiation detector

0 1 2 0 123 In a radiation detector, a response is approximated as a primary delay system, and when a time constant T indicating the characteristic of the response is known, a final response value Nis forecasted from dose rates or counting rates Nand Nof two points in the initial or middle stage of response. When the time constant T is unknown, the final response value Nis forecasted from dose rates or counting rates N, N, and Nof three points in the initial or middle stage of response. Simultaneously, a time constant is obtained and the soundness of the radiation detector is also evaluated. Thereby, a dose rate in an existence field of radiation or a counting rate in an existence field of radioactive materials is quickly and accurately forecasted, whereby the measurement time is shortened.