Hyperfine and Zeeman interactions of the a ( 1 ) [ 3 Σ 1 + ] </…
2011; American Physical Society; Volume: 83; Issue: 2 Linguagem: Inglês
10.1103/physreva.83.024502
ISSN1538-4446
Autores Tópico(s)Cold Atom Physics and Bose-Einstein Condensates
ResumoThe role of the interaction with the nearest electronic state ${}^{3}{\ensuremath{\Sigma}}_{{0}^{\ensuremath{-}}}^{+}$ on the hyperfine structure and magnetic properties of the $a(1)[{}^{3}{\ensuremath{\Sigma}}_{1}^{+}]$ state of PbO is assessed. The accounting for this contribution leads to the difference between $g$ factors of the $J=1$ $\ensuremath{\Omega}$-doublet levels $\ensuremath{\Delta}g=37\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$, which is in good agreement with the experimental data $\ensuremath{\Delta}g=30(8)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$. The contribution of this interaction rapidly grows with $J$. For $J=30$, the difference of $g$ factors of $\ensuremath{\Omega}$-doublet states reaches 100%; for hyperfine constants, it reaches 18%. These differences also depend on the electric field, and, for $E=11$ V/cm for $^{207}\mathrm{Pb}$O, the difference in $g$ factors turns to zero. The latter is important for suppressing systematic effects in the electron electric dipole moment search experiment.
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