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Ionization Potential of the Helium Atom

Vladimir Korobov·Alexander Yelkhovsky
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Abstract

Ground state ionization potential of the He^4 atom is evaluated to be 5 945 204 221 (42) MHz. Along with lower order contributions, this result includes all effects of the relative orders alpha^4, alpha^3*m_e/m_alpha and alpha^5*ln^2(alpha).

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Vladimir Korobov, Alexander Yelkhovsky. 2001-05-31. Ionization Potential of the Helium Atom. https://doi.org/10.1103/physrevlett.87.193003

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