SF6− photodetachment near the adiabatic limit

Literature Information

Publication Date 2015-01-08
DOI 10.1039/C4CP05068A
Impact Factor 3.676
Authors

I. Luzon, M. Nagler, O. Heber, D. Strasser


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Abstract

High sensitivity photodetachment cross-section measurements of SF6− are performed near the adiabatic threshold limit. The extraction of adiabatic detachment energy (ADE) from the high sensitivity measurement of the cross-section change as a function of photon energy is discussed. Below the vertical detachment energy a steep 4 orders of magnitude cross-section drop is observed, with cross sections as low as 2 × 10−6 Å2 measured for photon energies below 2 eV. The cross-section is fitted with both the expected spectral shape based on recently calculated Frank–Condon overlaps and a phenomenological threshold function. The resulting 1.7 ± 0.02 eV ADE values are significantly higher than previously recommended experimental ADE values obtained based on kinetics modeling, and possible differences between the experimental approaches are discussed.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
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