Alpha-decay half-life of 221Fr in different environments H. B. Jeppesen, J. Byskov-Nielsen, P. Wright, J. G. Correia, L. M. Fraile, H. O. U. Fynbo, K. Johnston and K. Riisager Eur. Phys. J. A, 32 1 (2007) 31-34 Published online: 03 April 2007 DOI: 10.1140/epja/i2007-10011-9