TY - JOUR AU - C. Opal AU - W. Peterson AU - Earl Beaty BT - The Journal of Chemical Physics DA - Jan-01-1971 DO - 10.1063/1.1676707 PY - 1971 EP - 4100 T2 - The Journal of Chemical Physics TI - Measurements of Secondary-Electron Spectra Produced by Electron Impact Ionization of a Number of Simple Gases VL - 55 SN - 00219606 ER -