Multiphoton ionization mechanisms in CH3I and CD3I

Simon J. Garrett; D. Howard Fairbrother; Victor P. Holbert; Eric Weitz; Peter C. Stair

doi:10.1016/0009-2614(94)00120-0

Multiphoton ionization mechanisms in CH₃I and CD₃I

Simon J. Garrett^*, D. Howard Fairbrother, Victor P. Holbert, Eric Weitz, Peter C. Stair

^*Corresponding author for this work

Chemistry

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

14 Scopus citations

Abstract

The processes that occur subsequent to the absorption of multiple photons by CH₃I and CD₃I in the 325-335 nm region have been studied using a single stage time-of-flight mass spectrometer. At the fluences employed, ionization of methyl iodide, at parent resonances that were studied, can compete with parent fragmentation and subsequent ionization of the photofragments. The predominant source of the I⁺, CD⁺₂, CD⁺, and C⁺ signals observed in the wavelength region under study is fragmentation of the methyl iodide parent ion. A similar mechanism is likely for CH₃I.

Original language	English (US)
Pages (from-to)	409-415
Number of pages	7
Journal	Chemical Physics Letters
Volume	219
Issue number	5-6
DOIs	https://doi.org/10.1016/0009-2614(94)00120-0
State	Published - Mar 18 1994

Funding

We acknowledges upport of this work by the Air Force Office of Scientific Research, Air Force Systems Command, USAF under grant AFOSR-9 I-0303 and 91-0377 and by the National Science Foundation under grant CHE-9202523.

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

Access to Document

10.1016/0009-2614(94)00120-0

Cite this

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title = "Multiphoton ionization mechanisms in CH3I and CD3I",

abstract = "The processes that occur subsequent to the absorption of multiple photons by CH3I and CD3I in the 325-335 nm region have been studied using a single stage time-of-flight mass spectrometer. At the fluences employed, ionization of methyl iodide, at parent resonances that were studied, can compete with parent fragmentation and subsequent ionization of the photofragments. The predominant source of the I+, CD+2, CD+, and C+ signals observed in the wavelength region under study is fragmentation of the methyl iodide parent ion. A similar mechanism is likely for CH3I.",

author = "Garrett, {Simon J.} and Fairbrother, {D. Howard} and Holbert, {Victor P.} and Eric Weitz and Stair, {Peter C.}",

note = "Funding Information: We acknowledges upport of this work by the Air Force Office of Scientific Research, Air Force Systems Command, USAF under grant AFOSR-9 I-0303 and 91-0377 and by the National Science Foundation under grant CHE-9202523.",

year = "1994",

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doi = "10.1016/0009-2614(94)00120-0",

language = "English (US)",

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T1 - Multiphoton ionization mechanisms in CH3I and CD3I

AU - Garrett, Simon J.

AU - Fairbrother, D. Howard

AU - Holbert, Victor P.

AU - Weitz, Eric

AU - Stair, Peter C.

N1 - Funding Information: We acknowledges upport of this work by the Air Force Office of Scientific Research, Air Force Systems Command, USAF under grant AFOSR-9 I-0303 and 91-0377 and by the National Science Foundation under grant CHE-9202523.

PY - 1994/3/18

Y1 - 1994/3/18

N2 - The processes that occur subsequent to the absorption of multiple photons by CH3I and CD3I in the 325-335 nm region have been studied using a single stage time-of-flight mass spectrometer. At the fluences employed, ionization of methyl iodide, at parent resonances that were studied, can compete with parent fragmentation and subsequent ionization of the photofragments. The predominant source of the I+, CD+2, CD+, and C+ signals observed in the wavelength region under study is fragmentation of the methyl iodide parent ion. A similar mechanism is likely for CH3I.

AB - The processes that occur subsequent to the absorption of multiple photons by CH3I and CD3I in the 325-335 nm region have been studied using a single stage time-of-flight mass spectrometer. At the fluences employed, ionization of methyl iodide, at parent resonances that were studied, can compete with parent fragmentation and subsequent ionization of the photofragments. The predominant source of the I+, CD+2, CD+, and C+ signals observed in the wavelength region under study is fragmentation of the methyl iodide parent ion. A similar mechanism is likely for CH3I.

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