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Some experiments in positive ion kinetics

Harnwell, Gaylord P. (1928) Some experiments in positive ion kinetics. Physical Review, 31 (4). pp. 634-642. ISSN 0031-899X. doi:10.1103/PhysRev.31.634.

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Mean free path and mean energy loss per collision of positive ions of potassium and caesium in helium, neon, argon, hydrogen and nitrogen.—The motion of certain positive ions through gases was investigated in an experimental tube of simple design. The ions were obtained from the potassium and caesium catalyst sources developed at the Fixed Nitrogen Laboratory, and their behavior was studied in helium, neon, argon, hydrogen, and nitrogen. It was found that the results were best explained on the basis of a free path approximately equal to the kinetic theory value, and on an average fraction of energy lost per collision considerably less than would be expected on ordinary considerations. It is suggested that the explanation of this is to be found in a more accurate consideration of the fields of force involved at these encounters.

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Additional Information:©1928 The American Physical Society. Received 15 November 1927. In conclusion it is a pleasure for the writer to express his indebtedness to the National Research Council for its support and to California Institute of Technology for the facilities placed at his disposal. {G.P.H. was a] National Research Fellow.
Issue or Number:4
Record Number:CaltechAUTHORS:HARpr28
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:5938
Deposited By: Tony Diaz
Deposited On:09 Nov 2006
Last Modified:08 Nov 2021 20:29

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