Abstract
ARNOT has described experiments1 which he has interpreted as showing that a positive ion striking a surface can be converted into a negative ion by capture of two electrons. The negative ions drawn off may have energies in excess of that imparted to them in the accelerating electric fields. Some of this work was not in agreement with other results which one of us had obtained for negative ions, and we have therefore repeated and extended it.
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References
Arnot and Milligan, Proc. Roy. Soc., A, 156, 538 (1936). Arnot, Proc. Roy. Soc., A, 158, 137 (1937). Arnot, Proc. Roy. Soc., A, 158, 157 (1937).
Stille, Ann. Phys., 17, 635 (1933).
Thompson, J. S., Phys. Rev., 38, 1389 L. (1931).
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SLOANE, R., PRESS, R. Formation of Negative Ions at Surfaces. Nature 141, 872–873 (1938). https://doi.org/10.1038/141872b0
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DOI: https://doi.org/10.1038/141872b0
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