QED calculation of the 2p3/2-2p1/2 transition energy in five-electron ion of argon

Details QED calculation of the 2p3/2-2p1/2 transition energy in five-electron ion of argon QED calculation of the 2p3/2-2p1/2 transition energy in five-electron ion of argon

2007-02-23

arxiv.org/abs/physics/0702205v1

Phys. Rev. Lett. 98, 173004 (2007)

Physics

Atomic Physics

10 pages, 3 figures, 1 table

Scientific paper

10.1103/PhysRevLett.98.173004

We perform ab initio QED calculation of the (1s)^2(2s)^22p_{3/2} - (1s)^2(2s)^22p_{1/2} transition energy in the five-electron ion of argon. The calculation is carried out by perturbation theory starting with an effective screening potential approximation. Four different types of the screening potentials are considered. The rigorous QED calculations of the two lowest-order QED and electron-correlation effects are combined with approximate evaluations of the third- and higher-order electron-correlation contributions. The theoretical value for the wavelength obtained amounts to 441.261(70) (nm, air) and perfectly agrees with the experimental one, 441.2559(1) (nm, air).

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