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Hyperfine splitting of $2^3S_1$ state in He$^3$

Krzysztof Pachucki
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Abstract

Relativistic corrections to the hyperfine splitting are calculated for the triplet $2^3S_1$ state of the helium isotope He$^3$. High precision variational wave functions are employed, where the electron-electron correlations are well accounted for. Due to the unknown nuclear structure a comparison with the experimental result is performed via He$^{3+}$ hyperfine splitting. Surprisingly, the second order contribution due to Fermi interaction, in spite of the additional small factor $m/M$, is very significant.

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Krzysztof Pachucki. 2001-05-19. Hyperfine splitting of $2^3S_1$ state in He$^3$. https://doi.org/10.1088/0953-4075/34/16/311

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