Abstract
SOME years ago, Arnot1 directed attention to the fact that bombardment of a surface with positive ions resulted in the liberation of negative ions of the same species. Shortly afterwards, Sloane and Press2, using a double mass spectrometer and employing magnetic sorting of both the bombarding positive ion beam and the resulting negative ions, were able to prove that bombardment of a surface by positive ions of a given kind could result in the formation of a whole spectrum of negative ions.
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References
Arnot and Milligan, Proc. Roy. Soc., A, 156, 538 (1936). Arnot, Proc. Roy. Soc., A, 158, 137 (1937); Proc. Roy. Soc., A, 158, 157 (1937).
Sloane, R. H., and Press, R., Nature, 141, 872 (1938); Proc. Roy. Soc., A, 168, 284 (1938).
Schaefer, H., and Walcher, W., Z. Phys., 121, 679 (1943).
Woodcock, K. S., Phys. Rev., 38, 1696 (1931).
Thompson, J. S., Phys. Rev., 38, 1389 (1931).
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SLOANE, R., LOVE, H. Surface Formation of Lithium Negative Ions. Nature 159, 302–303 (1947). https://doi.org/10.1038/159302a0
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DOI: https://doi.org/10.1038/159302a0
