Dependence of inhomogeneous vibrational linewidth broadening on attractive forces from local liquid number densities

Journal Article · Mon Nov 01 04:00:00 EST 1982 · J. Chem. Phys.; (United States)

DOI:https://doi.org/10.1063/1.444385· OSTI ID:6715301

George, S M; Harris, C B

The dependence of inhomogeneous vibrational linewidth broadening on attractive forces form slowly varying local liquid number densities is examined. The recently developed Schweizer--Chandler theory of vibrational dephasing is used to compute absolute inhomogeneous broadening linewidths. The computed linewidths are compared to measured inhomogeneous broadening linewidths determined using picosecond vibrational dephasing experiments. There is a similarity between correlations of the Schweizer--Chandler and George--Auweter--Harris predicted inhomogeneous broadening linewidths and the measured inhomogeneous broadening linewidths. For the methyl stretches under investigation, this correspondence suggests that the width of the number density distribution in the liquid determines the relative inhomogeneous broadening magnitudes. (AIP)

• Research Organization: Department of Chemistry and Materials and Molecular Reseach Division of Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720
• OSTI ID: 6715301
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 77:9; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

640420* -- Fluid Physics-- Properties & Structure of Fluids-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ENERGY LEVELS
EXCITED STATES
FLUIDS
INFRARED SPECTRA
INTERMOLECULAR FORCES
LINE BROADENING
LINE WIDTHS
LIQUIDS
SPECTRA
VIBRATIONAL STATES