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Phys. Rev. C 76, 024304 (2007) [4 pages]

α-decay half-life of 253Es in metallic Fe at temperatures between 4 K and 50 mK

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N. Severijns1,*, A. A. Belyaev2, A. L. Erzinkyan3, P.-D. Eversheim4, V. T. Filimonov5, V. V. Golovko1,†, G. M. Gurevich6, P. Herzog4, I. S. Kraev1, A. A. Lukhanin2, V. I. Noga2, V. P. Parfenova3, T. Phalet1, A. V. Rusakov6, Yu. G. Toporov5, C. Tramm4, V. N. Vyachin7, F. Wauters1, D. Zákoucký8, and E. Zotov5
1Instituut voor Kern- en Stralingsfysica, K.U.Leuven, B-3001 Leuven, Belgium
2Kharkov Institute of Physics and Technology, 61108 Kharkov, Ukraine
3Institute of Nuclear Physics, Moscow State University, RU-119992 Moscow, Russia
4Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, D-53115 Bonn, Germany
5Research Institute for Atomic Reactors, RU-433510 Dimitrovgrad-10, Russia
6Institute for Nuclear Research, Russian Academy of Sciences, RU-119312 Moscow, Russia
7RFNC All-Russian Scientific Research Institute of Exper. Physics, RU-607190 Sarov, Russia
8Nuclear Physics Institute, Academy of Sciences of Czech Republic, CZ-25068 Řež, Czech Republic

Received 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

*nathal.severijns@fys.kuleuven.be

Present address: Cyclotron Institute, Texas A&M University, College Station, TX 77843, USA.