Auger decay widths of the ligand-field-split Br 3d components in the HBr molecule

Matila, T.; Püttner, R.; Kivimäki, A.; Aksela, H.; Aksela, S.

doi:10.1088/0953-4075/35/22/303

Cited by 11 publications

(8 citation statements)

References 18 publications

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“…The corresponding potential curves were calculated by Matila et al [22]. The molecular-field splitting of the Br 3d −1 core holes was resolved in photoelectron spectra [23][24][25] which also give access to their lifetime broadening [26].…”

Section: Sσ 4pσ 4pπmentioning

confidence: 99%

Selectivity of the Br 3d−1 Auger decays in HBr

et al. 2018

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The Auger decay of the spin-orbit and molecular-field split Br 3d −1 core holes in HBr is investigated, both by a photoelectron-Auger-electron coincidence experiment and by ab initio calculations based on the one-center approximation. The branching ratios for the Auger decay of the five different core-hole states to the 4p(σ, π) −2 dicationic final states are determined. Experimental and theoretical data are in good agreement and conform to results for the 4pπ −2 final states from a previous analysis of the high-resolution conventional Auger-electron spectrum. The branching ratios for the Br 3d −1 Auger decay to the 4p(σ, π) −2 with symmetry follow the propensity rule of L 2,3

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Section: Sσ 4pσ 4pπmentioning

confidence: 99%

Selectivity of the Br 3d−1 Auger decays in HBr

et al. 2018

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“…The Br 3d core-hole lifetime is 6.6 fs. 14 This time is of the same order of magnitude as the molecular dissociation time in bromomethane (7.1 fs), 2 thus UFD can be observed in the RAS spectra as two overlapping Auger features; one from the unfragmented molecules, which we designate M u , and one from Auger decays in the atomic Br fragment, designated M f . Figure 1 shows a schematic picture of these decay channels (left panel) and also of those in a bromomethane cluster, C u, f, d (right panel).…”

Section: Introductionmentioning

confidence: 95%

Suppression of the molecular ultra-fast dissociation in bromomethane clusters

Rander

Lindblad

Bradeanu

et al. 2014

The Journal of Chemical Physics

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Suppression of the molecular ultra-fast dissociation in bromomethane clusters. We address the influence of clustering on the ultra-fast dissociation of bromomethane. Valence and core photo-electron spectroscopy, partial electron yield absorption, and resonant Auger spectroscopy have been used together with ab initio calculations to investigate the properties of the ultra-fast dissociation. The ratio of ultra-fast dissociation of molecules in clusters as compared to free molecules is determined to be significantly reduced. We propose partial delocalization of the excited electronic state as being responsible for this behavior. © 2014 AIP Publishing LLC. Journal of Chemical Physics

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“…The photoelectron energy was chosen around 25 eV so that the 3d photoelectron is faster than the two Auger electrons from DA decay detected in coincidence with it. At 25 eV, the energy resolution ÁE=E ¼ 1:6% is enough to resolve the 1.25 eV spin orbit splitting of the 3d 3=2 and 3d 5=2 levels but not the molecular field splitting [15]. All data presented here correspond to the detection of three electrons in coincidence by selecting the corresponding events in the data list.…”

mentioning

confidence: 99%

Unveiling Residual Molecular Binding in Triply Charged Hydrogen Bromide

et al. 2011

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We present an experimental and theoretical study of triply charged hydrogen bromide ions formed by photoionization of the inner 3d shell of Br. The experimental results, obtained by detecting the 3d photoelectron in coincidence with the two subsequent Auger electrons, are analyzed using calculated potential energy curves of HBr3+. The competition between the short-range chemical binding potential and the Coulomb repulsion in the dissociative process is shown. Two different mechanisms are observed for double Auger decay: one, a direct process with simultaneous ejection of two Auger electrons to final HBr3+ ionic states and the other, a cascade process involving double Auger decay characterized by the autoionization of Br*+ ion subsequent to the HBr2+ fragmentation.

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Auger decay widths of the ligand-field-split Br 3d components in the HBr molecule

Cited by 11 publications

References 18 publications

Selectivity of the Br 3d−1 Auger decays in HBr

Selectivity of the Br 3d−1 Auger decays in HBr

Suppression of the molecular ultra-fast dissociation in bromomethane clusters

Unveiling Residual Molecular Binding in Triply Charged Hydrogen Bromide

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