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High-Resolution Raman Spectra of ν2 and Associated Hot Bands of 12C2D2

✍ Scribed by D. Bermejo; G. Di Lonardo; J.L. Doménech; L. Fusina

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
208 KB
Volume
209
Category
Article
ISSN
0022-2852

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✦ Synopsis

The Raman spectra of the Q branch of the ν 2 band of 12 C 2 D 2 and associated hot bands

, and 2ν 2 -ν 2 ) have been recorded with an instrumental resolution of about 3 × 10 -3 cm -1 and analyzed. All of them have been recorded using high resolution inverse Raman spectroscopy. For 2ν 2 -ν 2 , this technique has been combined with stimulated Raman pumping in order to populate the υ 2 = 1 state. A simultaneous analysis of all the observed Raman transitions and of the ν 2 -ν 5 band recorded in the infrared region has been performed on the basis of a theoretical model which takes into account the rotational and vibrational -type resonances within each vibrational manifold and the Darling-Dennison anharmonic resonance between the ν 2 + 2ν 4 and ν 2 + 2ν 5 states. The determined parameters reproduce the assigned wavenumbers with a standard deviation of the same order of magnitude as the experimental uncertainty.

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