Recoil Effect on the g Factor of Li-Like Ions
Abstract
The nuclear recoil effect on the g factor of Li-like ions is evaluated. The one-electron recoil contribution is treated within the framework of the rigorous QED approach to the first order in the electron-to-nucleus mass ratio m /M and to all orders in the parameter α Z . These calculations are performed in a range Z =3 - 92 . The two-electron recoil term is calculated for low- and middle-Z ions within the Breit approximation using a four-component approach. The results for the two-electron recoil part obtained in the Letter strongly disagree with the previous calculations performed using an effective two-component Hamiltonian. The obtained value for the recoil effect is used to calculate the isotope shift of the g factor of Li-like <mml:mmultiscripts>CaA </mml:mmultiscripts> 17 + with A =40 and A =48 which was recently measured. It is found that the new theoretical value for the isotope shift is closer to the experimental one than the previously obtained value.
- Publication:
-
Physical Review Letters
- Pub Date:
- December 2017
- DOI:
- 10.1103/PhysRevLett.119.263001
- arXiv:
- arXiv:1711.09363
- Bibcode:
- 2017PhRvL.119z3001S
- Keywords:
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- Physics - Atomic Physics;
- High Energy Physics - Phenomenology
- E-Print:
- 5 pages