SURFACE AND INSIDE CONTAMINATION MONITOR

摘要

PURPOSE:To enable quick and sure detection of contamination by disposing a suitable number of detectors facing incident windows of a material which allows transmission of low-energy radiations in the form of allowing transmission of high-energy radiations and absorbing the low-energy radiations. CONSTITUTION:Arm inserting parts 5 having a suitable size are provided to enable an operator handling R.I to insert his arms into said parts when the operator rides on a pedestal according to an instruction mark. A 150mum thin shet consisting of beryllium having excellent radiation permeability and having the characteristic to permit penetration of not only high-energy radiations but low-energy radiations as well is used for the incident windows 8 of radiations detector 6 disposed in a suitable number to the part corresponding to the operator's abdomen and the part below the instruction mark. A scintillator 9 is made into a relatively mark. A scintillator 9 is made into a relatively thin type so that the radiations having high energy are transmitted therethrough and the radiations having low energy are absorbed therein.