Correction for decay during counting in gamma spectrometry.
A basic result in gamma spectrometry is the count rate of a relevant peak. Correction for decay during counting and expressing the count rate at the beginning of the measurement can be done by a multiplicative factor that is derived from integrating the count rate over time. The counting time substituted in this factor must be the live time, whereas the use of the real-time is an error that underestimates the count rate by about the dead-time (DT) (in percentage). This error of underestimation of the count rate is corroborated in the measurement of a nuclide with a high DT. The present methodology is not applicable in systems that include a zero DT correction function.
Soreq Nuclear Research Center, Yavne 81800, Israel. nirel@soreq.gov.il
Y
Y
Nir-El
D000465:Algorithms; D005720:Gamma Rays; D015233:Models, Statistical; D011834:Radiation Monitoring / Q000295:instrumentation / Q000379:methods; D011868:Radioisotopes / Q000032:analysis*; D015203:Reproducibility of Results; D013051:Spectrometry, Gamma / Q000379:methods*; D013997:Time Factors
D011868:Radioisotopes