𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Determination of damped molecular rotation in the liquid phase using interferometric coherent Raman scattering

✍ Scribed by V. P. Kozich; A. Lau; A. M. Pfeiffer; A. Kummrow

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
118 KB
Volume
30
Category
Article
ISSN
0377-0486

No coin nor oath required. For personal study only.

✦ Synopsis

Extremely low wavenumber responses of 3,3 0 -diethylthiadicarbocyanine iodide (DTDCI) in methanol, neat benzene, nitrobenzene and carbon disulfide were observed with interferometric coherent Raman spectroscopy using incoherent light techniques. Strongly damped modes with transition wavenumbers around 0.5 cm -1 were observed. The close agreement of the measured damping times with known orientational relaxation times for benzene and carbon disulfide and with the calculated rotational wavenumbers of isolated molecules strongly supports the interpretation of the measured wavenumber as being correlated with the free-rotor motion of the molecules. These results are in agreement with the picture of orientational relaxation in liquids as a sequence of successive free rotations interrupted by collisions.

📜 SIMILAR VOLUMES

Direct observation of the resonant–non-r
Direct observation of the resonant–non-resonant cross-term contribution to coherent Raman scattering of quasi-continuous-wave noisy light in molecular liquids
✍ Darin J. Ulness; Michael J. Stimson; Jason C. Kirkwood; A. C. Albrecht 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 599 KB

The resonant-non-resonant cross-term contribution to the coherent Raman scattering (CRS) signal produced by broadband non-transform limited quasi-cw (noisy) light is directly observed in the form of a spectrogram. The technique is a recently developed time-frequency domain version of CRS using noisy