SF6- photodetachment near the adiabatic limit

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

doi:10.1039/c4cp05068a

SF₆^- photodetachment near the adiabatic limit

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

The Hebrew University of Jerusalem, Weizmann Institute of Science

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	7670-7675
Number of pages	6
Journal	Physical Chemistry Chemical Physics
Volume	17
Issue number	12
DOIs	https://doi.org/10.1039/c4cp05068a
State	Published - 28 Mar 2015

All Science Journal Classification (ASJC) codes

General Physics and Astronomy
Physical and Theoretical Chemistry

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10.1039/c4cp05068a

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title = "SF6- photodetachment near the adiabatic limit",

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 {\AA}2 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.",

author = "I. Luzon and M. Nagler and O. Heber and D. Strasser",

note = "Publisher Copyright: {\textcopyright} 2015 the Owner Societies.",

year = "2015",

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doi = "10.1039/c4cp05068a",

language = "الإنجليزيّة",

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T1 - SF6- photodetachment near the adiabatic limit

AU - Luzon, I.

AU - Nagler, M.

AU - Heber, O.

AU - Strasser, D.

PY - 2015/3/28

Y1 - 2015/3/28

N2 - 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.

AB - 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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U2 - 10.1039/c4cp05068a

DO - 10.1039/c4cp05068a

M3 - مقالة

SN - 1463-9076

VL - 17

SP - 7670

EP - 7675

JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

IS - 12

ER -

SF₆^- photodetachment near the adiabatic limit

Abstract

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