✦ LIBER ✦

Resonance hyper-Raman scattering spectra of ammonia

✍ Scribed by L.D. Ziegler; J.L. Roebber

Publisher: Elsevier Science
Year: 1987
Tongue: English
Weight: 557 KB
Volume: 136
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(87)80270-1

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✦ Synopsis

The first observation of a vibrationally (and rotationally) resolved resonance hyper-Raman spectrum is reported. Inelastic scattering spectra in the UV are observed when blue radiation ( a 4 16 nm) is focused in ammonia (1-8 atm). Twice the corresponding incident frequency is resonant with the second vibronic feature of the %+A absorption band. The narrow linewidths of the resonant secondary radiation clearly distinguishes this emission as scattering and not fluorescence. The resonance hyper-Raman signals are nearly as strong as observed linear resonance Raman signals of ammonia in agreement with cross section estimates.

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