abstract:The counting efficiency is the ratio between the number of particles or photons counted with a radiation counter and the number of particles or photons of the same type and energy emitted by the radiation source. Counting efficiency varies for different isotopes, sample compositions and scintillation counters.
The quenchingeffect of the colorsin the biologysample may lower the countingefficiency, Itcan beeliminatedafter decolorization of the sampleor corrected bysome other means.