Abstract
EXPERIMENTS recently carried out in this Institute1 have shown that, by bombarding silver disks with beams of ions of neon isotopes obtained from a high-intensity mass-spectrograph2,3, it is possible to prepare targets, containing the separated neon isotopes, that are suitable for certain investigations in nuclear physics. Due to the high energy of 60 keV., the ions penetrate into the silver surface to a depth of about one hundred atomic diameters, and to this depth a high concentration of neon atoms can be obtained. The experimental results (loc. cit.) indicate that a maximum concentration is approached when the surface has been hit by about 6 × 1016 ions per cm.2, corresponding to the collection of 2 μ gm. of neon per cm.2, if all the neon atoms remain in the surface.
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References
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KOCH, J. Mass-Spectrographic Separation of Isotopes of Gaseous Elements. Nature 161, 566–567 (1948). https://doi.org/10.1038/161566b0
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DOI: https://doi.org/10.1038/161566b0
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