Calculations on polarization properties of alkali metal atoms using Dirac—Fock plus core polarization method

Youqi, Tang; Li, Chengbin; Qiao, Huijie

doi:10.1088/1674-1056/23/6/063101

Cited by 25 publications

(9 citation statements)

References 59 publications

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“…The DF potential V DF (r) is constructed by using the core orbital wave functions ψ(𝑟) obtained in the first step. [24] In the present work, the one-body core-polarization interaction potential V 1 (r) is expanded to include the leading-term V 1a (r) and the high-order term V 1b (r),…”

Section: Theoretical Methods 21 Modified Combination Of the Dfcp And ...mentioning

confidence: 99%

Calculations of dynamic multipolar polarizabilities of the Cd clock transition levels*

Zhou

Tang

2021

Chinese Phys. B

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The pursuit of a systematic frequency uncertainty beyond 10−18 clock has triggered a multitude of investigations on the multipolar and higher-order lattice light shifts. The Cd atom has been proposed as a new candidate for the development of a lattice clock because of its smaller blackbody radiation shift at room temperature. Here, we apply an improved combined method of the Dirac–Fock plus core polarization and relativistic configuration interaction methods to calculate the dynamic multipolar polarizabilities of the Cd clock states. The effects of the high-order core-polarization potentials on the energies, reduced matrix elements, and multipolar polarizabilities have been evaluated systematically. The detailed comparison with available literature demonstrates that taking into account of the high-order core-polarization potentials is a simple and effective approach to improve the results of atomic properties for heavy atoms.

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Section: Theoretical Methods 21 Modified Combination Of the Dfcp And ...mentioning

confidence: 99%

Calculations of dynamic multipolar polarizabilities of the Cd clock transition levels*

Zhou

Tang

2021

Chinese Phys. B

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“…In 2010, Mitroy et al [11] reviewed the theory and applications of atomic and ionic polarizabilities across the periodic table of the elements. The static and dynamic polarizabilities of Cs have increased in interest recently, as demonstrated by a number of experimental [17][18][19][20][21][22][23][24][25][26][27][28][29] and theoretical [11,[30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49] studies.…”

Section: Previous Cs Polarizability Studiesmentioning

confidence: 99%

Magic wavelengths, matrix elements, polarizabilities, and lifetimes of Cs

Safronova

Clark

2016

Phys. Rev. A

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Motivated by recent interest in their applications, we report a systematic study of Cs atomic properties calculated by a high-precision relativistic all-order method. Excitation energies, reduced matrix elements, transition rates, and lifetimes are determined for levels with principal quantum numbers n ≤ 12 and orbital angular momentum quantum numbers l ≤ 3. Recommended values and estimates of uncertainties are provided for a number of electric-dipole transitions and the electric dipole polarizabilities of the ns, np, and nd states. We also report a calculation of the electric quadrupole polarizability of the ground state. We display the dynamic polarizabilities of the 6s and 7p states for optical wavelengths between 1160 nm and 1800 nm and identify corresponding magic wavelengths for the 6s − 7p 1/2 , 6s − 7p 3/2 transitions. The values of relevant matrix elements needed for polarizability calculations at other wavelengths are provided. arXiv:1605.05210v1 [physics.atom-ph]

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“…The first step is the Dirac-Fock (DF) calculation of the frozen core part based on B-spline basis sets to obtain the core orbital functions, the details of which can be found in our previous work. [11,18] Then a semi-empirical core polarization potential is introduced to approximate the correlation interaction between the core and valence electron and with the functional form…”

Section: Computational Detailsmentioning

confidence: 99%

Magic wavelengths for the 7s _1/2 −6d _3/2,5/2 transitions in Ra ⁺

Wang¹,

Li²,

Youqi³

et al. 2016

Chinese Phys. B

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The dynamic polarizabilities of the 7s and 6d states of Ra + are calculated using a relativistic core polarization potential method. The magic wavelengths of the 7s 1/2 -6d 3/2,5/2 transitions are identified. Comparing to the common radiofrequency (RF) ion traps, using the laser field at the magic wavelength to trap the ion could suppress the frequency uncertainty caused by the micromotion of the ion, and would not affect the transition frequency measurements. The heating rates of the ion and the powers of the laser for the ion trapping are estimated, which would benefit the possible precision measurements based on all-optical trapped Ra + .

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Calculations on polarization properties of alkali metal atoms using Dirac—Fock plus core polarization method

Abstract: Tang Yong-Bo(唐永波) a)b) , Li Cheng-Bin(李承斌) b) † , and Qiao Hao-Xue(乔豪学) a) ‡

Cited by 25 publications

References 59 publications

Calculations of dynamic multipolar polarizabilities of the Cd clock transition levels*

Calculations of dynamic multipolar polarizabilities of the Cd clock transition levels*

Magic wavelengths, matrix elements, polarizabilities, and lifetimes of Cs

Magic wavelengths for the 7s _1/2 −6d _3/2,5/2 transitions in Ra ⁺

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Calculations on polarization properties of alkali metal atoms using Dirac—Fock plus core polarization method

Abstract: Tang Yong-Bo(唐永波) a)b) , Li Cheng-Bin(李承斌) b) † , and Qiao Hao-Xue(乔豪学) a) ‡

Cited by 25 publications

References 59 publications

Calculations of dynamic multipolar polarizabilities of the Cd clock transition levels*

Calculations of dynamic multipolar polarizabilities of the Cd clock transition levels*

Magic wavelengths, matrix elements, polarizabilities, and lifetimes of Cs

Magic wavelengths for the 7s 1/2 −6d 3/2,5/2 transitions in Ra +

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Product

Resources

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Magic wavelengths for the 7s _1/2 −6d _3/2,5/2 transitions in Ra ⁺