N6,7O4,5O4,5

Abstract

The N6, 045045 Auger electron spectrum from mercury vapor has been measured using electron-impact excitation. The experimental spectrum has been decomposed into its components, and the relative energies and intensities have been compared with the theoretically calculated relative energies and intensities. The calculations have been done in the mixed-coupling scheme. Applying jj coupling to the initial state and intermediate coupling to the final states gives good agreement between the calculated and experimental results for both energy and intensity. The measured width of the Auger lines is greater than would be expected on theoretical grounds.

4fphotoionization and subsequent Auger decay in atomic Pb: Relativistic effects

“…This is because the 6p 1/2 orbital would remain occupied by two electrons forming a closed shell, and the 6p 3/2 orbital would remain empty. A similar peak structure as seen in the 4f −1 → 5d −2 Auger spectrum of mercury (ground-state configuration [Xe]4f 14 5d 10 6s 2 ) [33] would be expected. However, the Auger spectrum of Pb shows features which are typical for a spectrum taken from an open-shell atom.…”

“…The 2 F 5/2 hole states decay strongly to 1 D 2 (peak D) and to 1 G 4 (peak F) parent states as well, but also to 1 S 0 (peak E). There is some resemblance with the spectrum of Hg [33]: the same parents were the strongest lines in the decay of the 2 F 5/2 hole state and the 3 F 2 and 1 G 4 states were also strongly populated in the decay of the 2 F 7/2 hole state. In the Auger decay of Pb compared to Hg, however, many more final states get populated.…”

“…We will still use the leading LS terms of the 5d −2 configuration only in order to use a simple assignment for the lines and to see the analogy to a closed-shell system. Large deviations from the pure LSJ coupling is easy to understand as the spin-orbit splitting of the 5d orbital is large and thus the parent states are already strongly mixed, as was also seen in the 4f −1 → 5d −2 Auger decay of Hg [33]. In the decay of the 2 F 7/2 state of Pb, the most strongly populated final states are the parent states 1 D 2 (peak A), 3 F 2 (peak B), 053408-3 Auger kinetic energies (eV) and two leading jj -and LSJ -coupled CSFs for the Auger final states.…”

New determination of the core-level life-time broadenings in mercury

“…It is slightly larger than the value 0.24 eV of ref. [2] based on the line width of the Auger lines. However, we find that the two values agree, considering the respective error bars.…”

“…Core and valence electron spectra have been recorded for mercury in the gas phase [1][2][3][4][5], in the solid phase [1] and as a liquid. Data for this element are, however, relatively scarce.…”