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PRELIMINARY STUDY ON THE ALPHA TRACK ANALYSIS OF SPHERICAL URANIUM METAL PARTICLES  

Pyo Hyung-Yeol (Korea Atomic Energy Research Institute)
Kim Jong-Yun (Korea Atomic Energy Research Institute)
Lee Myung-Ho (Korea Atomic Energy Research Institute)
Park Yong-Jun (Korea Atomic Energy Research Institute)
Jee Kwang-Yong (Korea Atomic Energy Research Institute)
Kim Won-Ho (Korea Atomic Energy Research Institute)
Publication Information
Nuclear Engineering and Technology / v.38, no.4, 2006 , pp. 353-358 More about this Journal
Abstract
Alpha track analysis for the determination of the trace amount of alpha emitting nuclides in a very small particle was performed as an efficient and powerful technique during safeguard inspection. Metal particles with well-defined spherical shape, size and isotopic compositions as a reference material were used to correlate the number of tracks or track diameter with an isotopic composition eventually to identify the uranium enrichment in the environmental swipe samples. Slopes in the number of tracks versus the exposure time curve provide a simple insight into the uranium enrichment of an unknown particle. Low enriched uranium metal particles result in slopes still steeper than the depleted or natural uranium metal particles. In addition, a linear relationship between track diameter and particle size Is thought to be a useful first stage analytical tool as an efficient and convenient inspection guide. The significance of the simple linear model was also judged using the usual statistical tests.
Keywords
Solid-state Nuclear Track Detector; Alpha Track Analysis; Swipe Sample; Uranium Micro-particles; Uranium Content; Enrichment; Number of Track; Track Diameter;
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