Eur. Phys. J. A (2010) 46: 69-72
https://doi.org/10.1140/epja/i2010-11028-7

Regular Article - Experimental Physics

Alpha decay half-life of ¹⁴⁷Sm in metal samarium and Sm₂O₃

China Institute of Atomic Energy, P.O. Box 275(10), 102413, Beijing, PRC

Received: 1 June 2010
Accepted: 18 August 2010
Published online: 11 September 2010

Abstract

In order to investigate the possible influence of metallic environment on the alpha decay process, we have measured the ¹⁴⁷Sm activities in the hosts of metal samarium and Sm₂O₃ . The ¹⁴⁷Sm half-life was found to be (1.06±0.01)×10¹¹ y in metal samarium and (1.07±0.01)×10¹¹ y in Sm₂O₃ , respectively. No significant change has been observed within the experimental uncertainty. The absolute half-life presented here is consistent with the recommended value.