Journal article

Determination of the f parameter for k(0)-neutron activation analysis at the Australian 20 MW OPAL research reactor

RP Murrie, JS Quinton, RS Popelka-Filcoff



In the k 0 method of standardisation in neutron activation analysis (k 0-NAA), the ratio of thermal to epithermal neutrons, a value known as f, is fundamental in accurately determining the concentration of elements within the sample. Research into determining this f value via the cadmium ratio method was undertaken for two positions within the 20 MW Open Pool Australian Light water (OPAL) research reactor (Lucas Heights, NSW, Australia). A short irradiation and long irradiation position were assessed via two methods; the conventional cadmium ratio method based on the Høgdahl formalism, with f values of 2,666 ± 255 and 1,538 ± 258 being calculated respectively for the short and long positions..

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University of Melbourne Researchers


Awarded by Australian Institute of Nuclear Science and Engineering (AINSE)

Funding Acknowledgements

The authors wish to thank J. W. Bennett and A. Stopic from the Australian Nuclear Science and Technology Organisation (ANSTO) for their extensive help on this project. This research was funded by an Australian Institute of Nuclear Science and Engineering (AINSE) grant 11/012. R. Popelka-Filcoff acknowledges the Australian Institute of Nuclear Science and Engineering (AINSE) Fellowship. R. Murrie acknowledges the Defence Scholarship from the Department of Further Education, Employment, Science and Technology of the Government of South Australia, and the Max and Bette Mendelson Foundation Scholarship from the City of West Torrens Council.