Abstract
Rare gas ions Ne+, Ar+ and Kr+ are injected into a drift tube which is filled with helium gas and cooled by liquid helium. Helium cluster ions RgHe + x (Rg=Ne, Ar and Kr,x≦14) are observed as products. Information regarding the stability of RgHe + x is obtained from drift field dependence of the size distribution of the clusters, and magic numbers are determined. The magic numbers arex=11 and 13 for NeHe + x andx=12 for ArHe + x and KrHe + x . NeHe + x , Ar+ and Kr+ are proposed as the core ions for NeHe +13 , ArHe +12 and KrHe +12 , respectively.
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Kojima, T.M., Kobayashi, N. & Kaneko, Y. Helium cluster ions RgHe + x (Rg=Ne, Ar and Kr,x≦14) formed in a drift tube cooled by liquid helium. Z Phys D - Atoms, Molecules and Clusters 22, 645–650 (1992). https://doi.org/10.1007/BF01426367
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DOI: https://doi.org/10.1007/BF01426367