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On the Possible Anomalous Terms of Helium

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Abstract

According to P. Gerald Krüger two new lines of helium originate from the anomalous terms (2p)2 3P 012 and (2s)2 1S 0. Energy calculation together with stability considerations favour the interpretation of the first line. The explanation of the second line is almost certainly erroneous for energy reasons and because it appears improbable that this line should be attributed to atomic helium.

Translated from I presunti termini anomali dell’elio, “Il Nuovo Cimento”, vol. 8, 1931, pp. 78–83, by P. Radicati di Brozolo.

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Notes

  1. 1.

    Gerald Krüger, P.: Phys. Rev. 36, 855 (1930).

  2. 2.

    Wentzel, G.: Z Physik. 43, 524 (1927).

  3. 3.

    Fues, E.: Z Physik. 43, 726 (1927).

  4. 4.

    Cfr. Fock, V.: Z Physik. 63, 855 (1930).

  5. 5.

    Wigner, E.: Z Physik. 43, 624 (1927).

  6. 6.

    A different evaluation referred by the author does not seem to be correct.

  7. 7.

    Krüger, P.G.: Phys. Rev. 36, 855 (1930).

  8. 8.

    Fender, F.G., Vinti, J.P.: Phys. Rev. 46, 77 (1934).

  9. 9.

    Wu, T.-Y.: Phys. Rev. 46, 239 (1934)

  10. 10.

    Wilson, W.S.: Phys. Rev. 48, 536 (1935).

  11. 11.

    One year later, in 1935, Ta-You Wu found a 19% mistake in his calculation. Once corrected the mistake, the partial support to Krüger’s assignment resulted untenable. It is somewhat ironic that, as U. Fano pointed out in a conversation with E. Amaldi, Wu’s work has been frequently quoted while Majorana’s almost never.

  12. 12.

    Fano, U.: Phys. Rev. 124, 1866 (1961).

  13. 13.

    Lindroth, E.: Phys. Rev. 49, 4473 (1994).

  14. 14.

    Hylleraas, E.A.: Z Phys. 54, 347 (1929).

  15. 15.

    Accad, Y., Pekeris, C.L., Schiff, B.: Phys. Rev. 4, 516 (1971).

  16. 16.

    Drake, G.W.F.: In: Drake, G.W.F. (ed.) Atomic, molecular and optical physics handbook, p. 154. AIP Press, New York (1996), and reference therein.

  17. 17.

    Mohr, P.J., Taylor, B.: Rev. Mod. Phys. 77, 1 (2002).

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Majorana, E. (2020). On the Possible Anomalous Terms of Helium. In: Cifarelli, L. (eds) Scientific Papers of Ettore Majorana. Springer, Cham. https://doi.org/10.1007/978-3-030-23509-3_5

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