Lifetime of the Cs 6P1/2 state in bcc and hcp solid 4He A. Hofer, P. Moroshkin, S. Ulzega and A. Weis Eur. Phys. J. D, 46 1 (2008) 9-14 Published online: 26 September 2007 DOI: 10.1140/epjd/e2007-00275-5