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Quantum Electrodynamic and nuclear effects in Li-like ions and muonic atoms

Abstract : We have performed multi-configuration Dirac-Fock calculations of the transition energies in the transitions of 1s²2p²PJ-1s²2s²S1/2, J=1/2, 3/2, core-excited transitions of 1s2s2p²PJ-1s²2s²S1/2, J=1/2, 3/2 and 1s2s2p4PJ-1s²2s²S1/2, J=1/2, 3/2, 5/2, and Auger transition energies of 1s2s2p2PJ-1s2 1S0 and 1s2s2p4PJ- 1s2 1S0, J=1/2,3/2 in the lithium isoelectronic sequence for low- to high-Z ions (Z=10-96). Quantum-electrodynamic corrections with effective operator model and electronic correlation corrections are included in Dirac wave functions with finite nuclear size. All-order Breit and vacuum polarization corrections are also included in the calculation, with a fully optimized active set wavefunction. Extensive comparisons between existing theorical results and experiment are performed. We also evaluate nuclear parameters that minimize the weighted theory-experiment discrepancy in muonic 208Pb with two-parameter Fermi and three-parameter Gauss models. We obtain r=5.5057 fm in the Fermi model and r=5.5031 in Gauss model by polynomial-fitting. We also analyze the individual contributions of muonic 226Ra and 248Cm using the same prescription of exact QED correction for the upcoming experiments.
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Submitted on : Wednesday, September 22, 2021 - 1:01:40 AM
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  • HAL Id : tel-02519605, version 2

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Guojie Bian. Quantum Electrodynamic and nuclear effects in Li-like ions and muonic atoms. Physics [physics]. Sorbonne Université, 2019. English. ⟨NNT : 2019SORUS179⟩. ⟨tel-02519605v2⟩

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