TY - JOUR AU - David Norcross BT - Journal of Physics B: Atomic and Molecular Physics DA - Jan-05-1971 DO - 10.1088/0022-3700/4/5/006 PY - 1971 SP - 652 EP - 657 T2 - Journal of Physics B: Atomic and Molecular Physics TI - Photoionization of the He metastable states VL - 4 SN - 0022-3700 ER -