Resonance rovibronic Raman scattering of ammonia

L. D. Ziegler; B. Hudson

doi:10.1021/j150650a016

Resonance rovibronic Raman scattering of ammonia

L. D. Ziegler, B. Hudson

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

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Abstract

A resonance Raman (RR) spectrum of NH₃ excited by 212.8-nm radiation (fifth harmonic of Nd: YAG) has been obtained. This frequency is in resonance with the v′ = 1 level of the X → A absorption band. High-quality RR spectra are observed even though the A state dissociates with near unity quantum yield. Direct spectral evidence is found for N-H stretching (v₁) Franck-Condon activity in the resonant absorption and the excited-state geometry is seen to be planar (D_3h). Resonance-enhanced rovibrational Raman structure is observed. The resonant emission is determined to be RR scattering and not resonance fluorescence by line-shape analysis. New bending (inversion) levels of the ground state are identified. Moderate success in fitting the observed RR intensities is found by using one-dimensional bending Franck-Condon factors.

Original language	English (US)
Pages (from-to)	1110-1116
Number of pages	7
Journal	Journal of Physical Chemistry
Volume	88
Issue number	6
DOIs	https://doi.org/10.1021/j150650a016
State	Published - 1984
Externally published	Yes

ASJC Scopus subject areas

General Engineering
Physical and Theoretical Chemistry

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10.1021/j150650a016

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title = "Resonance rovibronic Raman scattering of ammonia",

abstract = "A resonance Raman (RR) spectrum of NH3 excited by 212.8-nm radiation (fifth harmonic of Nd: YAG) has been obtained. This frequency is in resonance with the v′ = 1 level of the X → A absorption band. High-quality RR spectra are observed even though the A state dissociates with near unity quantum yield. Direct spectral evidence is found for N-H stretching (v1) Franck-Condon activity in the resonant absorption and the excited-state geometry is seen to be planar (D3h). Resonance-enhanced rovibrational Raman structure is observed. The resonant emission is determined to be RR scattering and not resonance fluorescence by line-shape analysis. New bending (inversion) levels of the ground state are identified. Moderate success in fitting the observed RR intensities is found by using one-dimensional bending Franck-Condon factors.",

author = "Ziegler, {L. D.} and B. Hudson",

year = "1984",

doi = "10.1021/j150650a016",

language = "English (US)",

volume = "88",

pages = "1110--1116",

journal = "Journal of Physical Chemistry",

issn = "0022-3654",

publisher = "American Chemical Society",

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TY - JOUR

T1 - Resonance rovibronic Raman scattering of ammonia

AU - Ziegler, L. D.

AU - Hudson, B.

PY - 1984

Y1 - 1984

N2 - A resonance Raman (RR) spectrum of NH3 excited by 212.8-nm radiation (fifth harmonic of Nd: YAG) has been obtained. This frequency is in resonance with the v′ = 1 level of the X → A absorption band. High-quality RR spectra are observed even though the A state dissociates with near unity quantum yield. Direct spectral evidence is found for N-H stretching (v1) Franck-Condon activity in the resonant absorption and the excited-state geometry is seen to be planar (D3h). Resonance-enhanced rovibrational Raman structure is observed. The resonant emission is determined to be RR scattering and not resonance fluorescence by line-shape analysis. New bending (inversion) levels of the ground state are identified. Moderate success in fitting the observed RR intensities is found by using one-dimensional bending Franck-Condon factors.

AB - A resonance Raman (RR) spectrum of NH3 excited by 212.8-nm radiation (fifth harmonic of Nd: YAG) has been obtained. This frequency is in resonance with the v′ = 1 level of the X → A absorption band. High-quality RR spectra are observed even though the A state dissociates with near unity quantum yield. Direct spectral evidence is found for N-H stretching (v1) Franck-Condon activity in the resonant absorption and the excited-state geometry is seen to be planar (D3h). Resonance-enhanced rovibrational Raman structure is observed. The resonant emission is determined to be RR scattering and not resonance fluorescence by line-shape analysis. New bending (inversion) levels of the ground state are identified. Moderate success in fitting the observed RR intensities is found by using one-dimensional bending Franck-Condon factors.

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JF - Journal of Physical Chemistry

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Resonance rovibronic Raman scattering of ammonia

Abstract

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