Pressure Control of a Pressurized Proportional Counter for 4πβ-γ Coincidence Counting

—Effects of pressure variation and study for a non-flow type system—

Abstract

Effects of the pressure variation of counting gas on the efficiency function were examined using a 4πβ-γ coincidence counting system with a pressurized proportional counter. The results showed that the pressure variation of about ten kPa could not give large effects on the efficiency function and that a non-flow type of pressurized proportional counter with a simple gas control system could work well in the case of the pressure higher than 1 MPa, an ordinary pressure for the counting.