Zero discrimination level setting of liquid scintillation systems for counting of all single photoelectron pulses is required by both triple-to-double coincidence ratio (TDCR) and CIEMAT/NIST methods. However, this requirement may not be able to be met in some circumstances. The influence of rejection of a fraction of the single photoelectron peak has been studied both theoretically and experimentally on ³H, ⁶³Ni, ¹⁴C and ⁹⁰Sr/⁹⁰Y for both the TDCR and CIEMAT/NIST methods. A modified formula for calculation of efficiency is given in consideration of the rejected fraction of the single photoelectron peak.
|Number of pages||7|
|Journal||Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment|
|Publication status||Published - 2006|
- ¹⁴C and ⁹⁰Sr/⁹⁰Y
- Fraction correction
- Single photoelectron peak