Level-to-level and total probability for Auger decay including direct double processes of Ar<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mn>2</mml:mn><mml:msup><mml:mi>p</mml:mi><mml:mrow><mml:mo>−</mml:mo><mml:mn>1</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>hole states

Zeng, Jiaolong; Liu, Pengfei; Xiang, Wenjun; Yuan, Jianmin

doi:10.1103/physreva.87.033419

Cited by 43 publications

(38 citation statements)

References 45 publications

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“…The contributions from direct and cascade processes were determined from multi-electron coincidence experiment by Viefhaus et al [37] as 9.6% and 3.4%, respectively. These results are in very good agreement with the calculations of Zeng et al [7] who applied Eqs. (6), (7) and (3) to determine the direct and sequential DAD decay rates.…”

Section: Double Auger Decay In Rare Gasessupporting

confidence: 91%

“…In contrast, cascade double Auger decay (CDAD) in which the two electrons are emitted sequentially gives rise to a structured energy spectrum -each electron has a discrete energy given by the energy difference between the initial, intermediate and final states involved in the relaxation cascade. A number of theoretical and experimental studies have been devoted to DAD in both atomic and molecular systems, and they show that the contribution of the direct DAD driven by three electron correlation can indeed be significant [6,7, and references therein].…”

Section: Introductionmentioning

confidence: 99%

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Collective relaxation processes in atoms, molecules and clusters

Kolorenč

Averbukh

Feifel

et al. 2016

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

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Abstract. Electron correlation is an essential driver of a variety of relaxation processes in excited atomic and molecular systems. These are phenomena which often lead to autoionization typically involving two-electron transitions, such as the well-known Auger effect. However, electron correlation can give rise also to higherorder processes characterized by multi-electron transitions. Basic examples include simultaneous two-electron emission upon recombination of an inner-shell vacancy (double Auger decay) or collective decay of two holes with emission of a single electron. First reports of this class of processes date back to the 1960's, but their investigation intensified only recently with the advent of free-electron lasers. High fluxes of high-energy photons induce multiple excitation or ionization of a system on the femtosecond timescale and under such conditions the importance of multielectron processes increases significantly. We present an overview of experimental and theoretical works on selected multi-electron relaxation phenomena in systems of different complexity, going from double Auger decay in atoms and small molecules to collective interatomic autoionization processes in nanoscale samples.

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Section: Double Auger Decay In Rare Gasessupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Collective relaxation processes in atoms, molecules and clusters

Kolorenč

Averbukh

Feifel

et al. 2016

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

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“…The theoretical method for the calculations of the DDAD rates has been described in our recent work (Zeng et al 2013b(Zeng et al , 2013aLiu et al 2014a). In the secondorder perturbation theory, the DDAD rate reads as…”

Section: Theoretical Methodsmentioning

confidence: 99%

Single and double K-shell resonant photoionization and Auger decay of 1s → 2p excited states of O⁺–O⁴⁺

Zeng

Liu

et al. 2017

A&A

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In this work, single and double photoionization cross sections in the vicinity of 1s → 2p resonances are investigated theoretically for quantum states belonging to the ground and first excited configurations of O + -O 4+ . R-matrix method has been employed to obtain the single ionization cross section, whereas the double ionization cross sections are obtained by the branching ratios of the direct double Auger decay to the total Auger decay. By analyzing possible double ionization pathways, we conclude that the double photoionization originates predominately from the direct double Auger decay of the K-shell resonant states. Our theoretical work diagnosed the population fraction of the quantum state prepared in a recent experiment and successfully interpreted the experimental observations on both single and double photoionization cross sections.

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“…For autoionized levels, the broadening due to single Auger decay is included, whereas the contribution of direct double Auger decay is neglected. [33][34][35] In practical applications such as radiative transfer through hot dense plasmas, Planck and Rosseland mean opacities are required, which are defined as…”

Section: The Average Atomic Massmentioning

confidence: 99%

Ionization competition effects on population distribution and radiative opacity of mixture plasmas

Cheng

Tian

et al. 2015

Physics of Plasmas

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Ionization competition arising from the electronic shell structures of various atomic species in the mixture plasmas was investigated, taking SiO 2 as an example. Using a detailed-level-accounting approximation, we studied the competition effects on the charge state population distribution and spectrally resolved and Planck and Rosseland mean radiative opacities of mixture plasmas. A set of coupled equations for ionization equilibria that include all components of the mixture plasmas are solved to determine the population distributions. For a given plasma density, competition effects are found at three distinct temperature ranges, corresponding to the ionization of M-, Land nd K-shell electrons of Si. Taking the effects into account, the spectrally resolved and Planck and Rosseland mean opacities are systematically investigated over a wide range of plasma densities and temperatures. For a given mass density, the Rosseland mean decreases monotonically with plasma temperature, whereas Planck mean does not. Although the overall trend is a decrease, the Planck mean increases over a finite intermediate temperature regime. A comparison with the available experimental and theoretical results is made. V

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Level-to-level and total probability for Auger decay including direct double processes of Ar2p−1hole states

Cited by 43 publications

References 45 publications

Collective relaxation processes in atoms, molecules and clusters

Collective relaxation processes in atoms, molecules and clusters

Single and double K-shell resonant photoionization and Auger decay of 1s → 2p excited states of O⁺–O⁴⁺

Ionization competition effects on population distribution and radiative opacity of mixture plasmas

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Level-to-level and total probability for Auger decay including direct double processes of Ar2p−1hole states

Cited by 43 publications

References 45 publications

Collective relaxation processes in atoms, molecules and clusters

Collective relaxation processes in atoms, molecules and clusters

Single and double K-shell resonant photoionization and Auger decay of 1s → 2p excited states of O+–O4+

Ionization competition effects on population distribution and radiative opacity of mixture plasmas

Contact Info

Product

Resources

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Single and double K-shell resonant photoionization and Auger decay of 1s → 2p excited states of O⁺–O⁴⁺