Abstract
WE have reported recently the results of a series of measurements of the electron loss cross-section for hydrogen atoms of 5–40 keV. energy in various gases1,2. The method employed is capable of some precision, and the cross-sections obtained are accurate, we believe, to within 2–3 per cent. As a result we have been able to determine that in hydrogen and in carbon monoxide the cross-section does not vary smoothly with energy, but has a number of large fluctuations. In the carbon monoxide cross-section, for example, there are nine maxima in the region 8–40 keV. The magnitude of the oscillations is of the order of 10−16 cm.2 in a total cross-section of the order of 1–5 × 10−16 cm.2.
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References
Curran, R., and Donahue, T. M., Phys. Rev. (to be published); Bull. Amer. Phys. Soc., Ser. II, 4, 234 (1958).
Donahue, T. M., and Hushfar, F., Phys. Rev. Letters, 3, 470 (1959).
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DONAHUE, T., HUSHFAR, F. Detection of Negative Ions formed by Charge Transfer. Nature 186, 1038–1039 (1960). https://doi.org/10.1038/1861038a0
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DOI: https://doi.org/10.1038/1861038a0
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