We present experimental observations of the photoexcitation of 3lnl' doubly-excited states of helium decaying by autoionization into the (2p)P-2 excited ion final-state channel. By determining the angular distribution of the fluorescence from the final ion state, the alignment of the ion and hence the partial 2pks and 2pkd cross-sections are determined and compared to recent theoretical calculations.
|Journal||Journal of Physics B: Atomic, Molecular and Optical Physics|
|Publication status||Published - 2006|
Harries, J. R., Sullivan, J. P., Hammond, P., & Azuma, Y. (2006). Photoionization of He in the 3lnl' doubly-excited state energy region: angular distribution of the fluorescence from the residual ion He+(2p)2P. Journal of Physics B: Atomic, Molecular and Optical Physics, 39(23), 4819-4824. https://doi.org/10.1088/0953-4075/39/23/002