SF6- photodetachment near the adiabatic limit

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

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.

Original languageAmerican English
Pages (from-to)7670-7675
Number of pages6
JournalPhysical Chemistry Chemical Physics
Volume17
Issue number12
DOIs
StatePublished - 28 Mar 2015

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