Absolute 60Co characterization based on gamma-gamma coincident detection by two NaI(Tl) detectors
Creators
- 1. National Institute of Standards and Technology, Gaithersburg, MD 20899 (United States)
- 2. George Mason University, Fairfax, VA (United States)
Description
A gamma-gamma coincidence measurement method was used for the characterization of 60Co. A two-dimensional analysis of coincident events allows the careful calculation of the number of counts, when each of the two γ-rays emitted by 60Co is in the photopeak area in each of the NaI(Tl) detectors. The standard formulas that were applied for absolute calibration of 125I (Eldridge-Crowther formulas) were modified for the case of 60Co decay. These modified Eldridge-Crowther formulas were applied to the absolute calibration of 60Co samples measured by the two NaI(Tl) detectors both in coincidence and normal modes. Measurements were performed for three sources of different activities and for two positions of each source between the two NaI(Tl) detectors. Results are in good agreement with the measurements of the same samples done by the 4πβ-γ method.
Availability note (English)
Available from http://dx.doi.org/10.1016/j.nima.2009.06.002Additional details
Identifiers
- DOI
- 10.1016/j.nima.2009.06.002;
- PII
- S0168-9002(09)01190-5;
Publishing Information
- Journal Title
- Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
- Journal Volume
- 607
- Journal Issue
- 3
- Journal Page Range
- p. 568-572
- ISSN
- 0168-9002
- CODEN
- NIMAER
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 41045025
- Subject category
- S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
- Descriptors DEI
- CALIBRATION; COBALT 60; DECAY; DETECTION; GAMMA RADIATION; IODINE 125; NAI DETECTORS; STANDARDS; TWO-DIMENSIONAL CALCULATIONS
- Descriptors DEC
- BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; COBALT ISOTOPES; DAYS LIVING RADIOISOTOPES; ELECTROMAGNETIC RADIATION; ELECTRON CAPTURE RADIOISOTOPES; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTOPES; IODINE ISOTOPES; IONIZING RADIATIONS; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MEASURING INSTRUMENTS; MINUTES LIVING RADIOISOTOPES; NUCLEI; ODD-EVEN NUCLEI; ODD-ODD NUCLEI; RADIATION DETECTORS; RADIATIONS; RADIOISOTOPES; SCINTILLATION COUNTERS; SOLID SCINTILLATION DETECTORS; YEARS LIVING RADIOISOTOPES
Optional Information
- Copyright
- Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.