Abstract
SAMARIUM-146 was discovered in 1953 by Seaborg and Dunlavey, who produced the nuclide by an intense bombardment of neodymium with α-particles1. They reported that it emitted α-particles of 2.55-MeV. energy and decayed with an α-half-life of approximately 5 × 107 years.
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References
Dunlavey, D. C., and Seaborg, G. T., Phys. Rev., 92, 206 (1953).
Macfarlane, R. D., “Natural Alpha Radioactivity in Medium-Heavy Elements” (thesis), Department of Chemistry, Carnegie Institute of Technology, NYO-7687 (May 1959).
Macfarlane, R. D., and Kohman, T. P., “Natural Alpha Radioactivity in Medium-Heavy Elements” (in the press).
Vorob'ev, A. A., Komar, A. P., Korolev, V. A., and Slogakin, G. E., J. Exp. Theor. Phys. (U.S.S.R.), 37, 546 (1959); Soviet Physics-JETP, 37, 386 (1960).
Collins, T. L., Rourke, F. M., and White, F. A., Phys. Rev., 105, 196 (1957).
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MACFARLANE, R. Natural Occurrence of Samarium-146. Nature 188, 1180–1181 (1960). https://doi.org/10.1038/1881180a0
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DOI: https://doi.org/10.1038/1881180a0
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