Phys. Rev. C 76, 024304 (2007) [4 pages]α-decay half-life of 253Es in metallic Fe at temperatures between 4 K and 50 mKReceived 26 April 2007; published 2 August 2007 It has been claimed recently that half-lives of radioactive nuclei embedded in metals would be significantly affected by electron screening provided by the metal. The effect would further be strengthened at low temperatures. We have determined the half-life-of 253Es nuclei embedded in iron at temperatures between 4 K and 50 mK. Our results agree with the room temperature literature value within about 2% and show no dependence on temperature over a range of almost two orders of magnitude. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevC.76.024304
DOI:
10.1103/PhysRevC.76.024304
PACS:
23.60.+e, 21.10.Tg, 27.90.+b
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