Computational code in atomic and nuclear quantum optics: Advanced computing multiphoton resonance parameters for atoms in a strong laser field

Глушков, А. В.; Gurskaya, M. Yu.; Ignatenko, Anna V.; Smirnov, Alexander V.; Серга, И. Н.; Свинаренко, А. А.; Ternovsky, Eugeny V.

doi:10.1088/1742-6596/905/1/012004

Cited by 19 publications

(23 citation statements)

References 26 publications

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“…To define the hyperfine interaction potentials U(1/r n ,R), we use the method by Ivanov et al [11]. The key elements of the optimized relativistic energy approach to computing oscillator strengths are presented in [39,41,42,[46][47][48][49][50][51][52][53]. Let us remind that an initial general energy formalism combined with an empirical model potential method has been developed by Ivanov-Ivanova et al [11], further more general ab initio gauge-invariant relativistic approach has been presented in [42], where the calibration of the single model potential parameter b has been performed on the basis of the special ab initio procedure within relativistic energy approach (see also [4,45]).…”

Section: Relativistic Methods To Comput Hyperfine Structure Parametersmentioning

confidence: 99%

Надтонка Структура Важких Атомів В Рамках Релятивістської Багаточастинкової Теорії Збурень

et al. 2018

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The hyperfine structure and electric quadrupole moment of the mercury isotope are estimated within the relativistic many-body perturbation theory formalism with a correct and effective taking into account the exchange-correlation, relativistic, nuclear and radiative corrections. Analysis of the data shows that an account of the interelectron correlation effects is crucial in the calculation of the hyperfine structure parameters. The fundamental reason of physically reasonable agreement between theory and experiment is connected with the correct taking into account the interelectron correlation effects, nuclear (due to the finite size of a nucleus), relativistic and radiative corrections. The key difference between the results of the RHF, RMPT methods calculations is explained by using the different schemes of taking into account the inter-electron correlations. 2. Relativistic method to computing hyperfine structure parameters of atoms and ions Let us describe the key moments of the approach (more details can be found in refs. [3,4,10-20]). The electron wave functions (the PT zeroth basis) are found from solution of the relativistic Dirac equation with potential, which includes ab initio mean-field potential, electric, polarization potentials of a nucleus. The charge distribution in the Li-like ion is modelled within the Gauss model. The nuclear model used for the Cs isotope is the independent particle model with the Woods-Saxon and spin-orbit potentials (see refa. [3,4]). Let us consider in details more simple case of the Li-like ion. We set the charge distribution in the Li-like ion nucleus ρ(r) by the Gaussian function:

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Section: Relativistic Methods To Comput Hyperfine Structure Parametersmentioning

confidence: 99%

Надтонка Структура Важких Атомів В Рамках Релятивістської Багаточастинкової Теорії Збурень

et al. 2018

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“…All data obtained for the distribution of pressure altitude and temperature are taken from the model of the atmosphere of the middle latitudes (Odessa) [22,23]. The computing was performed with using the PC code Superatom [24][25][26][27][28]). It is clear that the time dependence of the relative resonance absorption coefficient of laser radiation by CO2 molecules for different laser pulses differs.…”

Section: Temporary Dependence Of Resonant Absorption Relative Coefficientmentioning

confidence: 99%

“…At the same time, e of the critical parameter is reached, the heating of the steam will prevail over oment of time. In such a physical situation, the effect of kinetic cooling will PC code Superatom [24][25][26][27][28]). It is clear that the time dependence of the relative resonance absorption coefficient of laser radiation by CO2 molecules for different laser pulses differs.…”

Section: Temporary Dependence Of Resonant Absorption Relative Coefficientmentioning

confidence: 99%

“…For accurate numerical calculations, it is important to accurately determine the probabilities of P 10 , P 20 , P 30 deactivation due to the levels of 10°0, 00°1 (СО 2 ) and v = 1 (N 2 ), the probability of Q resonance energy transfer СО 2 → N 2 , the excitation probability ω pulse of СО 2 laser and other constants. computing was performed with using the PC code Superatom [24][25][26][27][28]). It is clear that the time dependence of the relative resonance absorption coefficient of laser radiation by CO 2 molecules for different laser pulses differs.…”

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confidence: 99%

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Modeling of Nonlinear Optical Effects in the Interaction of Laser Radiation With Atmosphere and Sensing for Energy Exchange in a Mixture Atmospheric Gases

Бунякова¹,

Глушков²,

Хецеліус³

et al. 2019

SEMST

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It is presented an advanced quantum-kinetic model to describe the nonlinear-optical (spectroscopic) effect caused by the interaction of infrared laser radiation with a gas atmosphere. We determine the quantitative features of energy exchange in a mixture of CO 2 -N 2 -H 2 О atmospheric gases of atmospheric gases, which can be used in the development of new sensory spectroscopic technologies for observing the state of the atmosphere.

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“…In this paper the combined relativistic energy approach (REA) [10][11][12][13] and relativistic perturbation theory (PT) with the zeroth order ab initio one-particle representation [28][29][30][31] is used for computing spectral parameters of the heavy complex systems (Fr, Hg + ). The comparison of the calculated data with available theoretical and experimental data is performed.…”

Section: Introductionmentioning

confidence: 99%

Determination of Radiation Decay Parameters for Heavy Complex Atomic Systems

Буяджі¹,

Глушков²,

Тернівський³

et al. 2019

SEMST

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The combined relativistic energy approach and relativistic many-body perturbation theory with the zeroth order ab initio model potential optimized one-particle representation are used for precise computing the energy levels and radiative decay probabilities (radiation amplitudes) of heavy alkali elements, in particular, there are listed data for the 7s 1/2-np 1/2 , 3/2 , np 1/2 , 3/2-nd 3/2 , 5/2 (n=7-10) transitions in Fr and some E1 and E2 transitions in a single ionized Hg + atom. The comparison of the calculated values with available theoretical and experimental (compillated) data is performed..

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Computational code in atomic and nuclear quantum optics: Advanced computing multiphoton resonance parameters for atoms in a strong laser field

Cited by 19 publications

References 26 publications

Надтонка Структура Важких Атомів В Рамках Релятивістської Багаточастинкової Теорії Збурень

Надтонка Структура Важких Атомів В Рамках Релятивістської Багаточастинкової Теорії Збурень

Modeling of Nonlinear Optical Effects in the Interaction of Laser Radiation With Atmosphere and Sensing for Energy Exchange in a Mixture Atmospheric Gases

Determination of Radiation Decay Parameters for Heavy Complex Atomic Systems

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