A new technique for thick source alpha counting determination of U and Th

Citation
Ct. Michael et N. Zacharias, A new technique for thick source alpha counting determination of U and Th, NUCL INST A, 439(1), 2000, pp. 167-177
Citations number
15
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
ISSN journal
01689002 → ACNP
Volume
439
Issue
1
Year of publication
2000
Pages
167 - 177
Database
ISI
SICI code
0168-9002(20000101)439:1<167:ANTFTS>2.0.ZU;2-Z
Abstract
A new technique for the calculation of U and Th concentration is presented based on the alpha particle spectrum taken from a thick sample by using a s ilicon detector. Four approaches to the analysis of the experimental data a re presented, one being an improvement on the known pairs technique. By the proposed technique it is possible to calculate the concentrations of certa in daughter nuclides in the two series, or the sum of the activity concentr ations of others. This allows the detection of secular disequilibrium in ou r samples. This technique also has the advantage of being more accurate and provides the opportunity to cross-check the results derived from the diffe rent approaches. (C) 2000 Elsevier Science B.V. All rights reserved.