Abstract
Special considerations and techniques are desired for the preparation of small actinide counting sources. Counting sources have been prepared on metal disk substrates (planchets) with an active area of only 0.079 mm2. This represents a 93.75% reduction in deposition area from standard electrodeposition methods. The actinide distribution upon the smaller planchet must remain thin and uniform to allow alpha particle emissions to escape the counting source with a minimal amount of self-attenuation. This work describes the development of micro-electrodeposition methods and optimization of the technique with respect to deposition time and current density for various planchet sizes.
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Acknowledgements
The authors gratefully acknowledge the support and funding for this research provided by the NNSA Office of Non-Proliferation Research and Development (NA-22), the Los Alamos National Laboratory Directed Research and Development (LDRD), and the Department of Homeland Security Domestic Nuclear Detection Office.
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Plionis, A.A., Rim, J.H., Hastings, E.P. et al. Micro-electrodeposition techniques for the preparation of small actinide counting sources for ultra-high resolution alpha spectrometry by microcalorimetry. J Radioanal Nucl Chem 282, 905–908 (2009). https://doi.org/10.1007/s10967-009-0251-z
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DOI: https://doi.org/10.1007/s10967-009-0251-z