JETP Letters

, Volume 90, Issue 7, pp 524–529

Narrowing of the vibrational spectrum under compression of liquid carbon dioxide

Condensed Matter


The broadening and shift of the Q bands of the 1388/1285-cm−1 Fermi doublet of carbon dioxide have been measured by means of the spectroscopy of coherent anti-Stokes Raman scattering in a wide density range realized at compression in dense gaseous and liquid states. The spectrum of the low-frequency Q band exhibits an essential narrowing upon the compression of the liquid in the density range of 320–400 amagat from a maximum width of about 2.2 cm−1 to about 1.7 cm−1 determined by elastic dephasing. The observed dependence is connected with the progressive narrowing of the spectral contribution attributed to the collapsed rotational structure.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Pleiades Publishing, Ltd. 2009

Authors and Affiliations

  1. 1.International Laser Center and Faculty of PhysicsMoscow State UniversityMoscowRussia

Personalised recommendations