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The paper deals with recent work on high resolution alpha particle measurement and accurate analysis of complex spectra. Attention is given to a number of experimental parameters, e.g. source, detector, measurement geometry and optimisation of measurement conditions. The procedure for an accurate determination of the 238Pu/(239+240Pu) activity ratio without the need to analyse the fine structure is demonstrated. Examples of analysed high-resolution spectra are given and it is shown that the alpha particle peak shape may be considered as constant in practical energy intervals. Experimental consequences of recoil emission in case of short-lived daughters are discussed. Finally, the non-linear response of Si detectors to alpha particles is briefly mentioned.

Additional information

Authors: BORTELS G, JRC Geel (BE)
Bibliographic Reference: Paper presented: 13th ESARDA Symposium, Avignon (FR), May 14-16, 1991
Availability: Available from (1) as Paper EN 36019 ORA
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