Atomic ion energies for Na-like ions by a model potential method Z = 25–80

Ivanov, L. N.; Ivanova, Elena P.

doi:10.1016/0092-640x(79)90005-6

Cited by 89 publications

(32 citation statements)

References 9 publications

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“…We apply a generalized energy approach [11][12][13][14][15] and relativistic perturbation theory with the MP zeroth approximation [16][17][18][19][20] to computing the Rydberg atoms ionization parameters. In relativistic theory radiation decay probability (ionization cross-section etc) is connected with the imaginary part of electron energy shift.…”

Section: Ionization Of the Rydberg Atoms In The Blackbody Radiationmentioning

confidence: 99%

“…In fact this is a beginning of a new epoch in the atomic physics with external electromagnetic field. It has stimulated a great number of papers on the ac and dc Stark effect [1][2][3][4][5][6][7][8][9][10][11][12]. Conversely, the experiments with Rydberg atoms had very soon resulted in the discovery of an important ionization mechanism, provided by unique features of the Rydberg atoms.…”

Section: Introductionmentioning

confidence: 99%

“…Note that the correct treatment of the heavy Rydberg atoms parameters in an external electromagnetic field requires using strictly relativistic models. Here we apply an energy approach [11][12][13][14][15] with the MP zeroth approximation [16][17][18][19][20] to computing the thermal BBR ionization characteristics of the Rydberg atoms, in particular, the sodium.…”

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Spectroscopy of Rydberg atoms in a Black-body radiation field: Relativistic theory of excitation and ionization

Свинаренко

Khetselius

Buyadzhi

et al. 2014

J. Phys.: Conf. Ser.

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IntroductionA great progress in experimental laser physics and appearance of the so called tunable lasers allows one to access the highly excited Rydberg states of atoms. In fact this is a beginning of a new epoch in the atomic physics with external electromagnetic field. It has stimulated a great number of papers on the ac and dc Stark effect [1][2][3][4][5][6][7][8][9][10][11][12]. Conversely, the experiments with Rydberg atoms had very soon resulted in the discovery of an important ionization mechanism, provided by unique features of the Rydberg atoms. Relatively new topic of the modern theory is connected with consistent treating the Rydberg atoms in a field of the Blackbody radiation (BBR). It should be noted that the BBR is one of the essential factors affecting the Rydberg states in atoms [1]. The account for the ac Stark shift, fast redistribution of the levels' population and photoionization provided by the environmental BBR became of a great importance for successfully handling atoms in their Rydberg states.The most popular theoretical approaches to computing ionization parameters of the Rydberg atom in the BBR are based on the different versions of the model potential (MP) method, quasiclassical models. We mention a simple approximation for the rate of thermal ionization of Rydberg atoms, based on the results of our systematic calculations in the Simons-Fues MP [1]. In fact, using the MP approach is very close to the quantum defect method and other semi-empirical methods, which were also widely used in the past few years for calculating atom-field interaction amplitudes in the lowest orders of the perturbation theory. The significant advantage of the Simons-Fues MP method in comparison with other models is the possibility of presenting analytically (in terms of the hypergeometric functions) the characteristics for arbitrarily high orders, related to both bound-bound and bound-free transitions. Naturally, the standard methods of the theoretical atomic physics, including the Hartree-Fock and Dirac-Fock approximations, should be used in order to determine the thermal ionization characteristics of neutral and Rydberg atoms [2]. Note that the correct treatment of the heavy Rydberg atoms parameters in an external electromagnetic field requires using strictly relativistic models. Here we apply an energy approach [11][12][13][14][15] and relativistic perturbation theory (PT)

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Section: Ionization Of the Rydberg Atoms In The Blackbody Radiationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Spectroscopy of Rydberg atoms in a Black-body radiation field: Relativistic theory of excitation and ionization

Свинаренко

Khetselius

Buyadzhi

et al. 2014

J. Phys.: Conf. Ser.

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“…[1][2][3][4] and references therein). Relativistic many-body perturbation theory is effectively applied to the computation of spectra of low-lying states for lanthanides atoms [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Study of spectra for lanthanides atoms with relativistic many- body perturbation theory: Rydberg resonances

Свинаренко

2014

J. Phys.: Conf. Ser.

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Systematic trends in E2 transitions along the sodium isoelectronic sequence

Charro

Martı́n

2001

Int J of Quantum Chemistry

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ABSTRACT:Oscillator strengths for E2-forbidden spectral lines of sodium-isoelectronic ions, from K IX (Z = 19) to Cs XLV (Z = 55), have been calculated in the LS-coupling scheme using the relativistic quantum defect orbital (RQDO) method. The study of many of these sodiumlike ions is relevant to processes in fusion devices and in astrophysical objects. Our data are compared with the very few results available, and their systematic trend is analyzed for np 2 P 0 -n f 2 F 0 transitions. The influence of relativistic effects in E2 transitions along this sequence is also discussed. © 2002 Wiley Periodicals, Inc. Int J Quantum Chem 90: [403][404][405][406][407][408][409] 2002

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Atomic ion energies for Na-like ions by a model potential method Z = 25–80

Cited by 89 publications

References 9 publications

Spectroscopy of Rydberg atoms in a Black-body radiation field: Relativistic theory of excitation and ionization

Spectroscopy of Rydberg atoms in a Black-body radiation field: Relativistic theory of excitation and ionization

Study of spectra for lanthanides atoms with relativistic many- body perturbation theory: Rydberg resonances

Systematic trends in E2 transitions along the sodium isoelectronic sequence

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