TY - JOUR
T1 - Fine structure of the beryllium P 3 states calculated with all-electron explicitly correlated Gaussian functions
AU - Stanke, Monika
AU - Kȩdziorski, Andrzej
AU - Adamowicz, Ludwik
N1 - Publisher Copyright:
© 2022 American Physical Society.
PY - 2022/1
Y1 - 2022/1
N2 - The recently presented general algorithm for calculating an atomic fine structure [Kȩdziorski et al., Chem. Phys. Lett. 751, 137476 (2020)CHPLBC0009-261410.1016/j.cplett.2020.137476] is employed to study the fine splitting of the lowest eight P3 states of beryllium, i.e., the 1s22snp, n=2, ,9, P3 states. All-electron explicitly correlated Gaussian functions and a finite-nuclear-mass variational method are used in the calculations. The energies of the states are augmented with the leading α2 relativistic and α3 (and approximate α4) QED corrections (α=1c is the fine-structure constant, and c is the speed of light in atomic units). The calculated results are compared with the available experimental data.
AB - The recently presented general algorithm for calculating an atomic fine structure [Kȩdziorski et al., Chem. Phys. Lett. 751, 137476 (2020)CHPLBC0009-261410.1016/j.cplett.2020.137476] is employed to study the fine splitting of the lowest eight P3 states of beryllium, i.e., the 1s22snp, n=2, ,9, P3 states. All-electron explicitly correlated Gaussian functions and a finite-nuclear-mass variational method are used in the calculations. The energies of the states are augmented with the leading α2 relativistic and α3 (and approximate α4) QED corrections (α=1c is the fine-structure constant, and c is the speed of light in atomic units). The calculated results are compared with the available experimental data.
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U2 - 10.1103/PhysRevA.105.012813
DO - 10.1103/PhysRevA.105.012813
M3 - Article
AN - SCOPUS:85124155227
SN - 2469-9926
VL - 105
JO - Physical Review A
JF - Physical Review A
IS - 1
M1 - 012813
ER -