Method for measuring successive disintegrations pairs of sup212/supBi/sup212/supPo and sup214/supBi/sup214/supPo and sup40/supK in the solid radioactive materials, preferably in geological deposits and in ceramics

摘要

the object of the application is the measurement method of successive pairs of dpm 212bi / 212po and 214bi / 214po in permanent radioactive materials, especially in sediment geological and ceramics.this method is that the measurement is used scyntylator two-tier,advantageously scyntylator zns (ag) plotted on the scyntylator plastic of different times of scyntylacji originating from particle? and i,however, with impulses recorded pulse shape, pulse amplitude and time of occurrence,after which the recorded data is to shape and amplitude corresponding to the coincidence pulse and rozpadom beta? windows time comparable with sometimes life 212po and 214po what frompowiednio corresponds to sukcesywnym rozpadom 212bi / 212po and 214bi / 214po.on the basis of registered pairs of dpm 212bi / 212po and 214bi / 214po specifies the content of radioactive 232th, 235u and 238u considered permanent radioactive material.40k is calculated on the basis of naddatku zliczeu0144 beta particles over rem count background and over rem count beta resulting from the content 232th series, 235u and 238u in radioactive equilibrium.