Ionization by positive ion impact was studied in A, Ne, N2 , CO, He, at voltages up to 4000 volts and the results seem to check with those of Sutton (Phys. Rev. 33, 363, 1929) and Beeck (Ann. cl. Phys. 6, 8, 1001, 1930) wherever a check was possible. When the work was extended to an element heavier than K + i.e., Hg. the results are more complicated. The evidence seems to indicate; (a) reflection of K + ions at all voltages, (b) an increase in mean free path with increase in voltage, (c) no ionization below 250 volts, but above 250-350 volts ionization increases with increase in voltage.
Proceedings of the Iowa Academy of Science
©1932 Iowa Academy of Science, Inc.
"Motion of K+ Ions in Mercury Vapor,"
Proceedings of the Iowa Academy of Science, 39(1), 220-220.
Available at: https://scholarworks.uni.edu/pias/vol39/iss1/62