Abstract
The stability of the ion \({\mathrm {He^+_2}}\) (In “Il Nuovo Cimento” it is printed He2 instead of \({\mathrm {He^+_2}}\). (Note of the Editor, see also E. Amaldi, op. cit.)) can be studied even quantitatively with the method of Heitler and London. The results agree with the available experimental data. It appears that this compound is analogous to H2 even though the external electron is in a different state and the internal electrons do not only have the effect of screening the nuclear charges but instead contribute effectively to the molecular construction.
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Notes
- 1.
Weizel, W., Pestel, E.: Z Physik. 56, 97 (1929); see also ref. 3.
- 2.
Curtis, W.E., Harvey, A.: Proc. R. Soc. Lond. A 125, 484 (1929).
- 3.
Weizel, W.: Z Physik. 56, 727 (1929).
- 4.
Weizel, W.: Z Physik. 59, 320 (1930).
- 5.
Cfr. Hund, F.: Z Physik. 63, 719 (1930).
- 6.
Heitler, W., London, F.: Z Physik. 44, 455 (1927).
- 7.
London, F.: Z Physik. 46, 455 (1927); 50, 24 (1928). Heitler, W.: Z Physik. 46, 47 (1927); 47, 835 (1928). For a comprehensive review see, e.g., Heitler, W.: Phys. Z. 31, 185 (1930). E. A. Hylleraas in the study of the reaction between differently excited hydrogen atoms has found further degeneration deriving from the equality of the nuclei. Z Physik. 51, 150 (1928).
- 8.
Cfr. Gentile, G.: Z Physik. 63, 795 (1930).
- 9.
Hund, F.: Z Physik. 43, 788 (1927).
- 10.
In “Il Nuovo Cimento” it is erroneously printed y 8. (Note of the Editor, see also E. Amaldi, op. cit.)
- 11.
Slater, J.C.: Phys. Rev. 32, 349 (1928); Hylleraas, E.: Z Physik. 54, 347 (1929).
- 12.
Eisenschitz, R., London, F.: Z Physik. 60, 491 (1930)
- 13.
Sugiura, Y.: Z Physik. 45, 484 (1927).
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Majorana, E. (2020). On the Formation of Molecular Helium IonTranslated from Sulla formazione dello ione molecolare di elio, “Il Nuovo Cimento”, vol. 8, 1931, pp. 22–28, by P. Radicati di Brozolo.. In: Cifarelli, L. (eds) Scientific Papers of Ettore Majorana. Springer, Cham. https://doi.org/10.1007/978-3-030-23509-3_4
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