Parameters of Isotope Shifts for $2s2p{}^{3,1}\!P_{1} \to 2s^{2}{}^{1}\!S_0$ Transitions in Heavy Be-Like Ions

doi:10.1088/0256-307X/36/11/113101

Chin. Phys. Lett.

2019, Vol. 36

Issue (11): 113101 DOI: 10.1088/0256-307X/36/11/113101

ATOMIC AND MOLECULAR PHYSICS

Parameters of Isotope Shifts for $2s2p{}^{3,1}\!P_{1} \to 2s^{2}{}^{1}\!S_0$ Transitions in Heavy Be-Like Ions

Xiang Zhang¹, Jian-Peng Liu¹, Ji-Guang Li^2**, Hong-Xin Zou^1**

¹College of Liberal Arts and Science, National University of Defense Technology, Changsha 410073
²Institute of Applied Physics and Computational Mathematics, Beijing 100088

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Xiang Zhang, Jian-Peng Liu, Ji-Guang Li et al 2019 Chin. Phys. Lett. 36 113101

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Abstract The field shift and mass shift parameters of the 2$s2p\,{}^{3,1}\!P_{1}\to 2s^{2}\,{}^{1}\!S_0$ transitions in Be-like ions ($70 \le Z \le 92$) are calculated using the multi-configuration Dirac–Hartree–Fock and the relativistic configuration interaction methods with the inclusion of the Breit interaction and the leading QED corrections. We find that the mass shift parameters of these two transitions do not change monotonously along the isoelectronic sequence in the high-$Z$ range due to the relativistic nuclear recoil effects. A minimum value exists for the specific mass shift parameters around $Z=80$, especially for the 2$s2p\,{}^{3}\!P_{1}\to 2s^{2}\,{}^{1}\!S_0$ transition. In addition, the field shifts and mass shifts of these two transitions are estimated using an empirical formula, and their contributions are compared along the isoelectronic sequence.

Received: 01 July 2019 Published: 21 October 2019

PACS:	31.15.V-	(Electron correlation calculations for atoms, ions and molecules)
	31.15.am	(Relativistic configuration interaction (CI) and many-body perturbation calculations)
	31.30.J-	(Relativistic and quantum electrodynamic (QED) effects in atoms, molecules, and ions)
	31.30.Gs	(Hyperfine interactions and isotope effects)

Fund: Supported by the National Natural Science Foundation of China under Grant Nos 11874090, 11604385, 91536106 and 11204374, and the Research Project of National University of Defense Technology under Grant No ZK17-03-11.

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https://cpl.iphy.ac.cn/10.1088/0256-307X/36/11/113101 OR https://cpl.iphy.ac.cn/Y2019/V36/I11/113101

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	Xiang Zhang
	Jian-Peng Liu
	Ji-Guang Li
	Hong-Xin Zou

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