Cherenkov radiation effects on counting efficiency in extremely quenched liquid scintillation samples
- 1. Instituto de Investigacion Basica, Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas, Madrid (Spain)
Description
The CIEMAT/NIST tracer method has successfully standardized nuclides with diverse quench values and decay schemes in liquid scintillation counting. However, the counting efficiency is computed inaccurately for extremely quenched samples. This article shows that when samples are extremely quenched, the counting efficiency in high-energy beta-ray nuclides depends principally on the Cherenkov effect. A new technique is described for quench determination, which makes the measurement of counting efficiency possible when scintillation counting approaches zero. A new efficiency computation model for pure beta-ray nuclides is also described. The results of the model are tested experimentally for 89Sr, 90Y, 36Cl and 204Tl nuclides with independence of the quench level. (orig.)
Additional details
Publishing Information
- Journal Title
- Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
- Journal Volume
- 334
- Journal Issue
- 2-3
- Journal Page Range
- p. 471-476.
- ISSN
- 0168-9002
- CODEN
- NIMAER
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Netherlands
- INIS RN
- 25003472
- Subject category
- S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
- Descriptors DEI
- BETA DETECTION; BETA-MINUS DECAY; CALCIUM 45; CHERENKOV RADIATION; CHLORINE 36; EFFICIENCY; LIQUID SCINTILLATION DETECTORS; MATHEMATICAL MODELS; SCINTILLATION COUNTING; STRONTIUM 89; THALLIUM 204; YTTRIUM 90
- Descriptors DEC
- BETA DECAY; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; CALCIUM ISOTOPES; CHARGED PARTICLE DETECTION; CHLORINE ISOTOPES; COUNTING TECHNIQUES; DAYS LIVING RADIOISOTOPES; DECAY; DETECTION; ELECTROMAGNETIC RADIATION; ELECTRON CAPTURE RADIOISOTOPES; EVEN-ODD NUCLEI; HEAVY NUCLEI; HOURS LIVING RADIOISOTOPES; INTERMEDIATE MASS NUCLEI; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; LIGHT NUCLEI; MEASURING INSTRUMENTS; NUCLEAR DECAY; NUCLEI; ODD-ODD NUCLEI; RADIATION DETECTION; RADIATION DETECTORS; RADIATIONS; RADIOISOTOPES; SCINTILLATION COUNTERS; STRONTIUM ISOTOPES; THALLIUM ISOTOPES; YEARS LIVING RADIOISOTOPES; YTTRIUM ISOTOPES