Li , ChanHao , Xiao-LeiLi , Wei-DongShu , Zheng and Chen , Jing. (2017). Wavelength Dependence of the Two Channels for Double Ionization of He in Intense Laser Field.
Journal of Atomic and Molecular Sciences. 8 (1).
46-48.
doi:10.4208/jams.042117.061417a