TY - JOUR AU - W. Peterson AU - C. Opal AU - Earl Beaty BT - Journal of Physics B: Atomic and Molecular Physics DA - Jan-08-1971 DO - 10.1088/0022-3700/4/8/006 PY - 1971 SP - 1020 EP - 1025 T2 - Journal of Physics B: Atomic and Molecular Physics TI - Energy distributions of electrons ejected in ionizing collisions of electrons with helium VL - 4 SN - 0022-3700 ER -