Factors influencing precise measurement of relative peak counting rates are discussed in time-series measurements over a dynamic range of 1000-fold radioactive intensities (10 half-lives).
The principle of simulation of the statistics counting of radioactive nuclear decay based on the rejection method is presented, and the simulation is implemented with TC programming.
A radioactive source is used to bombard the rocks surrounding the wellbore with gamma rays. By counting the backscattered gamma rays, the density of the subsurface rock can be computed.