箔検電器の特性と放射線の測定

Abstract

"Charge and discharge characteristics of leaf electroscope were examined. When the leaf was charged with negative electric charge and exposed to frame, the closing time of the leaf was smaller than the case that the leaf was charged with positive electric charge, because the frame contains large proportion of positive ions. The dose rate of X?rays emitted from Krookes tubes used in Junior and Senior high schools for electron beam experiments can be measured with leaf electroscopes being kept in most of such schools. Therefore, the teachers can measure the dose rate by themselves without having rather expensive radiation measurement instruments."