Photo-assisted fragmentation spectroscopy of triatomic hydrogen

Susan F. Selgren; Gregory I. Gellene

doi:10.1016/0009-2614(88)87485-2

Photo-assisted fragmentation spectroscopy of triatomic hydrogen

Susan F. Selgren, Gregory I. Gellene

Chemistry and Biochemistry

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

19 Scopus citations

Abstract

The R₀(0) line of the 3s²A′₁←2p²A″₂ transition of the H₃ radical has been observed in absorption by the new technique of photo-assisted fragmentation spectroscopy. A fast beam of metastable H₃ radicals produced by H₃ ⁺/K electron transfer is interacted with visible light from a dye laser. Optical absorption is detected by observing a decrease in parent peak intensity in the H₃ ⁺ neutralization-reionization mass spectrum, resulting from dissociation of the neutral molecule. Absorption line widths are observed to be instrumentally limited (≈ 0.05 cm^-1) as the upper state of the transition is spectroscopically long lived. Application of the technique to various second-row hypervalent hydride radicals is discussed.

Original language	English
Pages (from-to)	485-489
Number of pages	5
Journal	Chemical Physics Letters
Volume	146
Issue number	6
DOIs	https://doi.org/10.1016/0009-2614(88)87485-2
State	Published - May 20 1988

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title = "Photo-assisted fragmentation spectroscopy of triatomic hydrogen",

abstract = "The R0(0) line of the 3s2A′1←2p2A″2 transition of the H3 radical has been observed in absorption by the new technique of photo-assisted fragmentation spectroscopy. A fast beam of metastable H3 radicals produced by H3 +/K electron transfer is interacted with visible light from a dye laser. Optical absorption is detected by observing a decrease in parent peak intensity in the H3 + neutralization-reionization mass spectrum, resulting from dissociation of the neutral molecule. Absorption line widths are observed to be instrumentally limited (≈ 0.05 cm-1) as the upper state of the transition is spectroscopically long lived. Application of the technique to various second-row hypervalent hydride radicals is discussed.",

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AU - Selgren, Susan F.

AU - Gellene, Gregory I.

PY - 1988/5/20

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N2 - The R0(0) line of the 3s2A′1←2p2A″2 transition of the H3 radical has been observed in absorption by the new technique of photo-assisted fragmentation spectroscopy. A fast beam of metastable H3 radicals produced by H3 +/K electron transfer is interacted with visible light from a dye laser. Optical absorption is detected by observing a decrease in parent peak intensity in the H3 + neutralization-reionization mass spectrum, resulting from dissociation of the neutral molecule. Absorption line widths are observed to be instrumentally limited (≈ 0.05 cm-1) as the upper state of the transition is spectroscopically long lived. Application of the technique to various second-row hypervalent hydride radicals is discussed.

AB - The R0(0) line of the 3s2A′1←2p2A″2 transition of the H3 radical has been observed in absorption by the new technique of photo-assisted fragmentation spectroscopy. A fast beam of metastable H3 radicals produced by H3 +/K electron transfer is interacted with visible light from a dye laser. Optical absorption is detected by observing a decrease in parent peak intensity in the H3 + neutralization-reionization mass spectrum, resulting from dissociation of the neutral molecule. Absorption line widths are observed to be instrumentally limited (≈ 0.05 cm-1) as the upper state of the transition is spectroscopically long lived. Application of the technique to various second-row hypervalent hydride radicals is discussed.

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