First principle study of the behavior of helium in plutonium dioxide Xiaofeng Tian, Tao Gao, Chunhai Lu, Jiacheng Shang and Hongxing Xiao Eur. Phys. J. B, 86 4 (2013) 179 Published online: 22 April 2013 DOI: 10.1140/epjb/e2013-31047-y