Published June 2008 | Version v1
Journal article Metadata-only

A primary standard for the measurement of alpha and beta particle surface emission rate at the National Metrology Institute of South Africa

Creators

  • 1. Ionising Radiation Laboratory, NMISA, CSIR Building 6, Meiring Naude Rd, Brummeria, Pretoria 0001 (South Africa)

Description

An absolute alpha and beta particle measurement system for the calibration of extended area sources has been established at the National Metrology Institute of South Africa (NMISA). Various characteristics of the measurement system were studied. Dead time and optimal values for high-voltage and low-energy discrimination were determined. The surface emission rates from four extended area sources (Am-241, Sr-90/Y-90, Cl-36 and C-14) that were previously certified by National Physical Laboratory (NPL) were measured. The results obtained with the NMISA measurement system and those from the NPL were in excellent agreement with En values of below 0.25 being observed for all four sources

Availability note (English)

Available from http://dx.doi.org/10.1016/j.apradiso.2008.02.059

Additional details

Identifiers

DOI
10.1016/j.apradiso.2008.02.059;
PII
S0969-8043(08)00085-7;

Publishing Information

Journal Title
Applied Radiation and Isotopes
Journal Volume
66
Journal Issue
6-7
Journal Page Range
p. 925-928
ISSN
0969-8043
CODEN
ARISEF

Conference

Title
16. international conference on radionuclide metrology and its applications
Dates
3-7 Sep 2007
Place
Cape Town (South Africa)

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
39115499
Subject category
S07: ISOTOPES AND RADIATION SOURCES;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ALPHA PARTICLES; AMERICIUM 241; BETA PARTICLES; CALIBRATION; CARBON 14; CHLORINE 36; DEAD TIME; EMISSION; GAS FLOW; PROPORTIONAL COUNTERS; STANDARDS; STRONTIUM 90; YTTRIUM 90
Descriptors DEC
ACTINIDE NUCLEI; ALKALINE EARTH ISOTOPES; ALPHA DECAY RADIOISOTOPES; AMERICIUM ISOTOPES; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; CARBON ISOTOPES; CHARGED PARTICLES; CHLORINE ISOTOPES; DAYS LIVING RADIOISOTOPES; ELECTRON CAPTURE RADIOISOTOPES; EVEN-EVEN NUCLEI; FLUID FLOW; HEAVY NUCLEI; HOURS LIVING RADIOISOTOPES; INTERMEDIATE MASS NUCLEI; IONIZING RADIATIONS; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; LIGHT NUCLEI; MEASURING INSTRUMENTS; NUCLEI; ODD-EVEN NUCLEI; ODD-ODD NUCLEI; RADIATION DETECTORS; RADIATIONS; RADIOISOTOPES; SPONTANEOUS FISSION RADIOISOTOPES; STRONTIUM ISOTOPES; TIMING PROPERTIES; YEARS LIVING RADIOISOTOPES; YTTRIUM ISOTOPES

Optional Information

Copyright
Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.