Abstract
The use of high resolution γ-ray spectrometry in the detailed analysis of low level samples for the 238U and 232Th decay chains is discussed. A spectrometer is described, based on a “p” type intrinsic germanium well-detector contained in a cryostat manufactured from selected low background materials, and with a sample capacity of up to 10 g. Problems of sample self absorption are discussed and the calibration of the spectrometer detailed. Checks to confirm the calibration are described and illustrative analyses of samples of interest to thermoluminescence dating given. Typical overall uncertainties are between 1 and 5 Bq kg −1, depending on the radionuclide concerned.
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Schedule a callMore From: International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes
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