Influence of double Auger decay on low-energy 3<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>d</mml:mi></mml:math>photoelectrons of krypton

Sheinerman, S.; Linusson, P.; Eland, J. H. D.; Hedin, Lage; Andersson, Egil; Rubensson, Jan‐Erik; Karlsson, Leif; Feifel, Raimund

doi:10.1103/physreva.86.022515

Cited by 16 publications

(8 citation statements)

References 33 publications

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“…Similar double Auger decays have been observed, for instance, for krypton, 23 argon, 24 and carbon monoxide. 25 An alternative explanation based on regular Auger decay is the knock-out of a weakly bound valence electron by the Auger electron…”

Section: B Nexams Spectrasupporting

confidence: 81%

Near edge X-ray absorption mass spectrometry on coronene

Reitsma

Boschman

Deuzeman

et al. 2015

The Journal of Chemical Physics

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We have investigated the photoionization and photodissociation of free coronene cations C24H12 (+) upon soft X-ray photoabsorption in the carbon K-edge region by means of a time-of-flight mass spectrometry approach. Core excitation into an unoccupied molecular orbital (below threshold) and core ionization into the continuum both leave a C 1s vacancy, that is subsequently filled in an Auger-type process. The resulting coronene dications and trications are internally excited and cool down predominantly by means of hydrogen emission. Density functional theory was employed to determine the dissociation energies for subsequent neutral hydrogen loss. A statistical cascade model incorporating these dissociation energies agrees well with the experimentally observed dehydrogenation. For double ionization, i.e., formation of intermediate C24H12 (3+⋆)trications, the experimental data hint at loss of H(+) ions. This asymmetric fission channel is associated with hot intermediates, whereas colder intermediates predominantly decay via neutral H loss.

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Section: B Nexams Spectrasupporting

confidence: 81%

Near edge X-ray absorption mass spectrometry on coronene

Reitsma

Boschman

Deuzeman

et al. 2015

The Journal of Chemical Physics

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“…Multielectron coincidence spectroscopy [4,5] allows one to reliably select a decay pathway and ascribe it to the recorded photoelectron spectrum. Using this technique, PCI distortion of photoelectron spectra has been investigated for single Auger (SA) decay of Ar 2p, Kr 3d, and Xe 4d vacancies [6][7][8], as well as for double Auger (DA) decay of Ar 2p, Ar 2s, and Kr 3d vacancies [6,9,10]. However, the multielectron coincidence method is not very efficient for large kinetic energy differences between photoelectrons and Auger electrons, and thus it cannot be applied to the decay of deep inner vacancies.…”

Section: Introductionmentioning

confidence: 99%

Postcollision interaction effects inKLLAuger spectra following argon1sphotoionization

et al. 2015

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Postcollision interaction effects on the Auger decay of a deep core hole are studied both experimentally and theoretically. KL 2,3 L 2,3 decay spectra of the Ar 1s vacancy are measured with high-energy resolution with excess photon energies ranging from 0 to 200 eV above the ionization threshold. Interaction of the Auger electron with the photoelectron and the ion field manifests itself in the Auger spectra as a distortion of the energy distribution of the Auger electron close to threshold. Moreover, recapture of the photoelectron due to energy exchange is dominating in the low-photon-energy range above threshold. The experimental results are compared with calculations based on the semiclassical approach to the postcollision interaction. The energies of the discrete levels and individual recapture cross sections are computed in the Hartree-Fock approximation. Good agreement is found between the calculated and experimental spectra, validating the model used.

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“…It can be done within a semiclassical approach that has been applied to account for the PCI effects in SA Auger decays [30] and DA Auger decays [31]. The semiclassical approach for low-velocity photoelectron spectra has been successfully demonstrated for the PCI distortion of the Ar 2p photoelectrons [31] and Kr 3d photoelectrons [32] energy distributions.…”

Section: Theoretical Model and Calculationmentioning

confidence: 99%

Post-collision interaction manifestation in molecular systems probed by photoelectron-molecular ion coincidences

Bomme¹,

Guillemin²,

Sheinerman³

et al. 2013

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

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S1s photoionization in carbonyl sulfide (OCS), followed by multiple Auger decay is investigated both experimentally and theoretically, by means of photoelectron–ion coincidences. A strong influence of post-collision interaction is observed in the energy shift and the distortion of the photoelectron spectra. The magnitude of this effect depends on the total charge of the ionic fragments, i.e., on the number of electrons emitted during the decay of the inner vacancy. A satisfactory agreement is found between experiment and theory, which allows us to estimate the lifetimes of the various two-hole states of the intermediate OCS2 + ion.

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Influence of double Auger decay on low-energy 3dphotoelectrons of krypton

Cited by 16 publications

References 33 publications

Near edge X-ray absorption mass spectrometry on coronene

Near edge X-ray absorption mass spectrometry on coronene

Postcollision interaction effects inKLLAuger spectra following argon1sphotoionization

Post-collision interaction manifestation in molecular systems probed by photoelectron-molecular ion coincidences

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