Letter | Published:

Ionization Energy of Li+ and He

Naturevolume 140page151 (1937) | Download Citation



As a disagreement was found by Robinson1 between measured and calculated values for the ionization potential of Li+, I have made a direct calculation by the method described by Hylleraas2. The ionization potential in the 13th approximation is found to be 610,058 cm.-1. This result is in good agreement with the value 610,054 cm.-1 obtained from the Hylleraas' extrapolation formula for Z = 3.

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  1. 1

    Robinson, Phys. Rev., 51, 14 (1937).

  2. 2

    Hylleraas, Z. Phys., 65, 209 (1930).

  3. 3

    Bethe, “Handb. d. Physik”, vol. 24/I, p. 324, et seq.

  4. 4

    Edlén, Nova Acta Reg. Soc. Sci. Ups., (7) 9, No. 6, and Robinson, Phys. Rev., 51, 14 (1937).

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  1. Institute of Mechanics and Theoretical Physics, Uppsala

    • H. A. S. ERIKSSON


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