PROPORTIONAL COUNTER CAPABLE OF CORRECTING MEASUREMENT ERROR DUE TO FLUCTUATION OF VOLTAGE BETWEEN ELECTRODES

摘要

PURPOSE: To eliminate a measurement error caused by the fluctuation in voltage between an anode and a cathode by monitoring the voltage between the anode and the cathode and then correcting the error based on the monitored result. ;CONSTITUTION: A voltage V between an anode A and a cathode C is detected in real time by a voltage monitoring means 1 and is output to a gas amplification factor operation means 3. The operation means 3 calculates a gas amplification factor M at that point using a calculation expression or data indicating the relationship between the voltage between electrodes and the gas amplification factor. An obtained amplification factor M is input to an energy operation means 4 and is subjected to operation processing along with the voltage from a preamplifier 2, thus calculating the energy, etc., of incident X-rays and hence eliminating a measurement error due to fluctuation of voltage between electrodes.;COPYRIGHT: (C)1995,JPO