The S21 lines of the A2Σ+ (v′ = 1)←X2Π (v″ = 0) transitions of OH and OD

Shiaw Ruey Lin; Sze Tsen Lee; Yuan-Pern Lee

doi:10.1016/0022-4073(87)90079-3

The S₂₁ lines of the A²Σ⁺ (v′ = 1)←X²Π (v″ = 0) transitions of OH and OD

Shiaw Ruey Lin^*, Sze Tsen Lee, Yuan-Pern Lee

^*Corresponding author for this work

Department of Applied Chemistry

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

6 Scopus citations

Abstract

The S₂₁ lines of the OH radical for the A²Σ⁺ (v′ = 1)←X²Π (v″ = 0) transition have been observed in the 278-280 nm region from the laser-excitation spectrum. The OH radical was generated from either the H + NO₂ or the H + O₃ reaction in a flow system and the fluorescence passing through a 309.6 nm interference filter was detected with a photomultiplier-boxcar integrator arrangement. The weak S₂₁ lines were observed at laser energies above 0.2 mJ. The observed peak wavenumbers are in excellent agreement with those predicted for the S₂₁ bands of the A (v>′ = 1)←X (v″ = 0) transition from the known spectroscopic parameters. Observation of the corresponding S₂₁ system for OD in the 286.0-286.9 nm region further confirms this assignment. The relative absorption cross-sections of about one-tenth those of the P₁ lines are in good agreement with theoretical considerations.

Original language	English
Pages (from-to)	163-166
Number of pages	4
Journal	Journal of Quantitative Spectroscopy and Radiative Transfer
Volume	38
Issue number	3
DOIs	https://doi.org/10.1016/0022-4073(87)90079-3
State	Published - Sep 1987

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title = "The S21 lines of the A2Σ+ (v′ = 1)←X2Π (v″ = 0) transitions of OH and OD",

abstract = "The S21 lines of the OH radical for the A2Σ+ (v′ = 1)←X2Π (v″ = 0) transition have been observed in the 278-280 nm region from the laser-excitation spectrum. The OH radical was generated from either the H + NO2 or the H + O3 reaction in a flow system and the fluorescence passing through a 309.6 nm interference filter was detected with a photomultiplier-boxcar integrator arrangement. The weak S21 lines were observed at laser energies above 0.2 mJ. The observed peak wavenumbers are in excellent agreement with those predicted for the S21 bands of the A (v>′ = 1)←X (v″ = 0) transition from the known spectroscopic parameters. Observation of the corresponding S21 system for OD in the 286.0-286.9 nm region further confirms this assignment. The relative absorption cross-sections of about one-tenth those of the P1 lines are in good agreement with theoretical considerations.",

author = "Lin, {Shiaw Ruey} and Lee, {Sze Tsen} and Yuan-Pern Lee",

year = "1987",

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doi = "10.1016/0022-4073(87)90079-3",

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journal = "Journal of Quantitative Spectroscopy and Radiative Transfer",

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T1 - The S21 lines of the A2Σ+ (v′ = 1)←X2Π (v″ = 0) transitions of OH and OD

AU - Lin, Shiaw Ruey

AU - Lee, Sze Tsen

AU - Lee, Yuan-Pern

PY - 1987/9

Y1 - 1987/9

N2 - The S21 lines of the OH radical for the A2Σ+ (v′ = 1)←X2Π (v″ = 0) transition have been observed in the 278-280 nm region from the laser-excitation spectrum. The OH radical was generated from either the H + NO2 or the H + O3 reaction in a flow system and the fluorescence passing through a 309.6 nm interference filter was detected with a photomultiplier-boxcar integrator arrangement. The weak S21 lines were observed at laser energies above 0.2 mJ. The observed peak wavenumbers are in excellent agreement with those predicted for the S21 bands of the A (v>′ = 1)←X (v″ = 0) transition from the known spectroscopic parameters. Observation of the corresponding S21 system for OD in the 286.0-286.9 nm region further confirms this assignment. The relative absorption cross-sections of about one-tenth those of the P1 lines are in good agreement with theoretical considerations.

AB - The S21 lines of the OH radical for the A2Σ+ (v′ = 1)←X2Π (v″ = 0) transition have been observed in the 278-280 nm region from the laser-excitation spectrum. The OH radical was generated from either the H + NO2 or the H + O3 reaction in a flow system and the fluorescence passing through a 309.6 nm interference filter was detected with a photomultiplier-boxcar integrator arrangement. The weak S21 lines were observed at laser energies above 0.2 mJ. The observed peak wavenumbers are in excellent agreement with those predicted for the S21 bands of the A (v>′ = 1)←X (v″ = 0) transition from the known spectroscopic parameters. Observation of the corresponding S21 system for OD in the 286.0-286.9 nm region further confirms this assignment. The relative absorption cross-sections of about one-tenth those of the P1 lines are in good agreement with theoretical considerations.

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U2 - 10.1016/0022-4073(87)90079-3

DO - 10.1016/0022-4073(87)90079-3

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SN - 0022-4073

VL - 38

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JO - Journal of Quantitative Spectroscopy and Radiative Transfer

JF - Journal of Quantitative Spectroscopy and Radiative Transfer

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ER -

The S₂₁ lines of the A²Σ⁺ (v′ = 1)←X²Π (v″ = 0) transitions of OH and OD

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