Study of gas-discharge counter characteristics and well logging measurement optimization

Calculations of the efficiency of gas-discharge counters with different cathode thicknesses were carried out by the Monte-Carlo method. It was assumed that a homogeneous flux of monoenergetic gamma radiation is directed perpendicularly to the counter axis. Only the interaction of the gamma quantum with the counter walls was taken into account. With a photoeffect at the K-level of the cathode, the trajectory of the characteristic gamma quantum could be traced. Three types of counters for different methods of radioactive logging were determined