TY - JOUR AU - Alan Gallagher AU - G. York BT - Review of Scientific Instruments DA - Jan-01-1974 DO - 10.1063/1.1686709 PY - 1974 EP - 662 T2 - Review of Scientific Instruments TI - A photoionization source of monoenergetic electrons VL - 45 SN - 00346748 ER -