QED theory of the spectral line profile and its applications to atoms and ions

Andreev, O. Yu.; Labzowsky, L. N.; Plunien, G.

doi:10.1016/j.physrep.2007.10.003

Cited by 107 publications

(103 citation statements)

References 288 publications

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“…Higher quantum electrodynamic (QED) terms are required for strongly-ionized species, and may also be necessary for very high Z elements. A comprehensive discussion of the methodology suitable for handling higher QED effects, as well as other aspects of relativistic atomic physics, may be found in several recent publications [24,[55][56][57][58][59]. This methodology has yet to be applied to heavy atoms.…”

Section: The Relativistic Hamiltonianmentioning

confidence: 99%

Electronic structure theory of the superheavy elements

2015

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Section: The Relativistic Hamiltonianmentioning

confidence: 99%

Electronic structure theory of the superheavy elements

2015

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“…Our description of electron loss from helium-like HCIs by photo absorption and by the impact of fast atomic particles is based on the line-profile approach (LPA) [46,47] of QED. The Furry picture is used, in which the Coulomb interaction of the electrons of the HCI with its nucleus is fully taken into account from the onset.…”

Section: General Considerationmentioning

confidence: 99%

“…This interaction is taken into account in the zeroth and first orders of the perturbation expansion. Besides, the leading parts of the higher order corrections in the electron-electron interaction are also included into the treatment according to the LPA [47].…”

Section: General Considerationmentioning

confidence: 99%

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Effects of autoionization in electron loss from heliumlike highly charged ions in fast collisions with atomic particles

2017

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We study theoretically single electron loss from helium-like highly charged ions involving excitation and decay of autoionizing states of the ion. Electron loss is caused by either photo absorption or the interaction with a fast atomic particle (a bare nucleus, a neutral atom, an electron). The interactions with the photon field and the fast particles are taken into account in the first order of perturbation theory. Two initial states of the ion are considered: 1s 2 and (1s 2s)J=0. We analyze in detail how the shape of the emission pattern depends on the atomic number ZI of the ion discussing, in particular, the inter-relation between electron loss via photo absorption and due to the impact of atomic particles in collisions at modest relativistic and extreme relativistic energies. According to our results, in electron loss from the 1s 2 state autoionization may substantially influence the shape of the emission spectra only up to ZI ≈ 35-40. A much more prominent role is played by autoionization in electron loss from (1s 2s)J=0 where it not only strongly affect the shape of the emission pattern but also may substantially increase the total loss cross section.

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“…This leads to quantum electrodynamics in the Furry picture. The perturbation theory is employed to account for the electron-electron interaction and the radiative corrections [1][2][3][4][5].…”

Section: Bound-state Qed With Heavy Ionsmentioning

confidence: 99%

Tests of fundamental theories with heavy ions at low-energy regime

et al. 2011

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The current status of theoretical investigations of spectroscopic properties and fundamental interactions in highly charged ions is reviewed. Laying special attention on tests of quantum electrodynamics at strong fields recent progress in calculations of energy levels, hyperfine splitting and g factor values is reported. The parity nonconservation effect on the laser-induced 2 3 S 1 − 2 1 S 0 transition in heavy He-like ions is studied, which could serve as test scenario for the Standard Model in low-energy atomic physics. The Coulomb glory effect in collisions of antiprotons with heavy ions is considered. It is emphasized that observation of this effect in collisions of antiprotons with bare nuclei would exhibit the screening properties of the vacuum polarization potential. A new approach to the description of dynamic atomic processes in low-energy heavy-ion collisions is presented. As a first application of this approach, the charge transfer probabilities for the U 91+ (1s) -U 92+ collision are evaluated.

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QED theory of the spectral line profile and its applications to atoms and ions

Cited by 107 publications

References 288 publications

Electronic structure theory of the superheavy elements

Electronic structure theory of the superheavy elements

Effects of autoionization in electron loss from heliumlike highly charged ions in fast collisions with atomic particles

Tests of fundamental theories with heavy ions at low-energy regime

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