First hint on a change of the 210Po alpha-decay half-life in the metal Cu F. Raiola, T. Spillane, B. Limata, B. Wang, S. Yan, M. Aliotta, H. W. Becker, J. Cruz, M. Fonseca, L. Gialanella et al. (9 more) Eur. Phys. J. A, 32 1 (2007) 51-53 Published online: 10 April 2007 DOI: 10.1140/epja/i2007-10012-8