Calculation of Energy Response of Cylindrical G—M Tubes with EGS4 Monte Carlo Code

摘要

The energy responses of Ka of two types of cylindrical G-M counter tubes were calculated using an electron-photon cascade Monte Carlo code,EGS4.One type of the G-M counter tubes was GJ4401 (sensitive length 9cm,diameter 1cm),the other was J5 (sensitive length 2cm,diameter 0.3cm),the restricted sampling technique of source photon was used.Good tendency agreements between the simulations and experiments were achieved for gamma radiation with energies ranging from 40keV to 1.25 MeV.For GJ4401,the difference of response between simulations and experiments at 662 keV was 34% and for J5 the difference was 27%.