Resonant and Nonresonant Auger Recombination

Aksela, H.; Aksela, S.; Kabachnik, N. M.

doi:10.1007/978-1-4613-0315-2_11

Cited by 10 publications

(10 citation statements)

References 191 publications

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“…Studying photorecombination in all orders of complexity, from DR to TR and QR, can become a fruitful approach for understanding more complex multi-electron processes such as shake-up and shake-off in outer shells, especially for heavier species [37,38]. Arguably, even higher recombination orders involving more than four simultaneous electronic excitations, which are more likely to be expected in recombination of open M -shell ions having many equivalent electrons and vacancies energetically closely spaced, should be investigated to learn about the stepwise buildup of a many-electron wave function.…”

Section: Discussionmentioning

confidence: 99%

Major role of multielectronicK-Lintershell resonant recombination processes in Li- to O-like ions of Ar, Fe, and Kr

et al. 2013

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Dielectronic and higher-order resonant electron recombination processes including a K-shell excitation were systematically measured at high resolution in electron beam ion traps. Storing highly charged Ar, Fe, and Kr ions, the dependence on atomic number Z of the contribution of these processes to the total recombination cross section was studied and compared with theoretical calculations. Large higher-order resonant recombination contributions are found, especially for systems with 10 < Z < 36. In some cases, they even surpass the strength of the dielectronic channel, which was hitherto presumed to be always the dominant one. These findings have consequences for the modeling of high-temperatur plasmas. Features attributed to inter-shell quadruelectronic recombination were also observed. The experimental data obtained for the He-like to O-like isoelectronic sequences compare well with the results of advanced relativistic distorted-wave calculations employing multiconfiguration Dirac-Fock bound state wave functions that include threefold and fourfold excitations.

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Section: Discussionmentioning

confidence: 99%

Major role of multielectronicK-Lintershell resonant recombination processes in Li- to O-like ions of Ar, Fe, and Kr

et al. 2013

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“…It is well known from the conventional theory of Auger decay that the plane-wave approximation for the Auger electron is not adequate. In order to obtain good agreement with experiment, one should take into account the distortion of the electron wave due to the interaction with the ionic core [17]. One can expect that for the laser-assisted Auger decay also, a better result will be obtained if, within SFA, the distorted waves are used in the computations of the Auger matrix element in equation (30).…”

Section: Strong Field Approximationmentioning

confidence: 99%

“…However, if the Auger electron is slow (20-30 eV or less), this approximation may fail and the SFA is not generally valid. On the other hand, low-energy Auger electrons appear quite often in Auger spectra [17,18]; therefore, a special theoretical analysis of this case is necessary.…”

Section: Introductionmentioning

confidence: 99%

Theory of laser-assisted Auger processes generated by ultrashort XUV pulses in atoms

Kazansky

Sazhina

Кабачник

2011

J. Phys. B: At. Mol. Opt. Phys.

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A non-stationary quantum mechanical theory of the laser-assisted Auger process in atoms excited by an ultrashort (attosecond) electromagnetic pulse in the field of a few-cycle strong optical laser pulse is considered. The theory is based on numerically solving the time-dependent Schrödinger equation describing Auger decay. An approach is suggested which can be applied for the case of low-energy Auger electrons when it is necessary to take accurately into account the electron interaction with both the laser field and the field of the residual ion. We show that the amplitude of the process can be presented as a coherent sum of contributions from the corresponding Auger decays at consecutive moments of time. This presentation saves considerable computer time in numerical calculations of the Auger spectrogram. It also demonstrates that the Auger electrons emitted at different moments are coherent. As an example, the electron spectra for laser-assisted Auger decay are calculated for the MNN transition in Kr. The variation of the Auger spectra with time delay between the two pulses is discussed. The results are compared with those obtained within the strong-field approximation.

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“…The resonant Auger effect was first observed by Eberhardt et al [1] in 1978 and since then a variety of studies has been presented. Overviews of the topic and surveys to the different sides of the phenomena have been made, for example, by Åberg and Howat [2], Hergenhahn et al [3], Åberg and Crasemann [4], Aksela et al [5][6][7], Svensson and Ausmees [8], Gel'mukhanov and Ågren [9], Armen et al [10], Piancastelli [11] and Sorensen and Svensson [12].…”

Section: Introductionmentioning

confidence: 99%

“…At the early stage of resonant Auger research, the rare gases Ne, Ar, Kr and Xe were subjects of many studies (see e.g. [3][4][5][6][7][8][9][10][11][12] and references therein). Also molecular samples were widely studied (see e.g.…”

Section: Introductionmentioning

confidence: 99%

Auger decay following 1s to 3p resonant excitation in sodium atoms

Kantia¹,

Partanen²,

Huttula³

et al. 2011

J. Phys. B: At. Mol. Opt. Phys.

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Non-monochromatized undulator radiation produced with two different undulator gaps was used to observe the Auger decay following 1s to 3p resonant excitation in atomic sodium. Experimental spectra were analysed by comparing with calculations carried out using the Hartree-Fock method with relativistic corrections. The spectra revealed a rich line structure due to the coupling of the holes created in the Auger decay with the electrons on the 3s and 3p subshells. The results of the analysis also suggest a strong shake-up behaviour of the spectator electron during the Auger decay.

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Resonant and Nonresonant Auger Recombination

Cited by 10 publications

References 191 publications

Major role of multielectronicK-Lintershell resonant recombination processes in Li- to O-like ions of Ar, Fe, and Kr

Major role of multielectronicK-Lintershell resonant recombination processes in Li- to O-like ions of Ar, Fe, and Kr

Theory of laser-assisted Auger processes generated by ultrashort XUV pulses in atoms

Auger decay following 1s to 3p resonant excitation in sodium atoms

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