Study of the valence electronic density distribution in Z=112-120 atoms

Kaygorodov, M. Y.; Kozhedub, Y. S.; Tupitsyn, I. I.; Shabaev, V. M.

doi:10.22323/1.353.0036

Cited by 7 publications

(4 citation statements)

References 13 publications

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“…These assumptions have been experimentally confirmed recently for the ground state configuration of Lr, which appeared to be different from that of Lu [3]. Hence, theoretical investigations of the properties of SHEs become important for experiments on atomic structure [3][4][5] and chemical properties [6][7][8][9][10][11] as well as for the concepts of the periodic-table extension [12][13][14][15][16][17]. A number of papers is devoted to calculations of the properties of SHEs by various methods [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36]; the reader is also referred to the reviews on advances in computational methods for electronic structure of SHEs [37][38][39][40][41][42] and the general reviews on this topic [43][44][45] that address the nuclear aspects of the problem as well.…”

Section: Introductionmentioning

confidence: 91%

Electron affinity of oganesson

Kaygorodov,

Skripnikov,

Tupitsyn

et al. 2021

Preprint

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Section: Introductionmentioning

confidence: 91%

Electron affinity of oganesson

Kaygorodov,

Skripnikov,

Tupitsyn

et al. 2021

Preprint

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“…The question of whether the periodic law holds for chemical elements beyond the seventh period [18][19][20][21][22][23] is one of the fundamental motivations to study the physics and chemistry of superheavy elements. These investigations are unfeasible without the proper treatment of the QED effects.…”

Section: Introductionmentioning

confidence: 99%

Model-QED operator for superheavy elements

et al. 2022

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The model-QED-operator approach [Phys. Rev. A 88, 012513 (2013)] to calculations of the radiative corrections to binding and transition energies in atomic systems is extended to the range of nuclear charges 110 Z 170. The self-energy part of the model operator is represented by a nonlocal potential based on diagonal and off-diagonal matrix elements of the ab initio self-energy operator with the Dirac-Coulomb wave functions. The vacuum-polarization part consists of the Uehling contribution which is readily computed for an arbitrary nuclear-charge distribution and the Wichmann-Kroll contribution represented in terms of matrix elements similarly to the self-energy part. Performance of the method is studied by comparing the model-QED-operator predictions with the results of ab initio calculations. The model-QED operator can be conveniently incorporated in any numerical approach based on the Dirac-Coulomb-Breit Hamiltonian to account for the QED effects in a wide variety of superheavy elements.

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“…Очевидно, что такие расчеты наряду с электронными корреляциями должны учитывать релятивистские и квантово-электродинамические (КЭД) эффекты. Электронная структура СТЭ интенсивно исследуется несколькими научными группами [4][5][6][7][8][9][10][11][12].…”

Section: Introductionunclassified

Релятивистские Расчеты Химических Свойств Сверхтяжелого Элемента С Z=119 И Его Гомологов

Tupitsyn¹,

Malyshev²,

Глазов³

et al. 2021

Оптика И Спектроскопия

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Relativistic calculations of the electronic structure of the superheavy element of the eighth period - eka-francium (Z=119) and its homologues, which form the group of alkali metals, are performed in the framework of the configuration-interaction method and many-body perturbation theory using the basis of the Dirac-Fock-Sturm orbitals (DFS). The obtained values of the ionization potentials, electron affinities, and root-mean-square radii are compared with the corresponding values calculated within the non-relativistic approximation. A comparison with the available experimental data and the results of previous theoretical calculations is given as well. The analysis of the obtained results indicates a significant influence of the relativistic effects for the francium and eka-francium atoms, which leads to a violation of the monotonic behaviour of the listed above chemical properties as a function of the alkaline-element atomic number. In addition, the quantum electrodynamics corrections to the ionization potentials are evaluated by employing the model Lamb-shift operator (QEDMOD).

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Study of the valence electronic density distribution in Z=112-120 atoms

Cited by 7 publications

References 13 publications

Electron affinity of oganesson

Electron affinity of oganesson

Model-QED operator for superheavy elements

Релятивистские Расчеты Химических Свойств Сверхтяжелого Элемента С Z=119 И Его Гомологов

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