Vibrational relaxation in liquid hydrogen and deuterium bromide—The influence of self and distinct correlation functions on the isotropic and anisotropic Raman line shape

1985 ◽  
Vol 83 (4) ◽  
pp. 1499-1506 ◽  
Author(s):  
Karl‐Ludwig Oehme ◽  
Georg Rudakoff ◽  
Klaus Klostermann
Keyword(s):  
Raman Line ◽  
Correlation Functions ◽  
Line Shape ◽  
Vibrational Relaxation ◽  
Liquid Hydrogen

Critical Raman line shape behavior of fluid nitrogen

2004 ◽  
Vol 76 (1) ◽  
pp. 147-155 ◽  
Author(s):  
M. Musso ◽  
F. Matthai ◽  
D. Keutel ◽  
K.-L. Oehme
Keyword(s):  
Raman Line ◽  
Line Shape ◽  
Line Broadening ◽  
Vibrational Resonance ◽  
Critical Isochore ◽  
Molecular Fluids ◽  
Detection Techniques ◽  
Gas Phases ◽  
Line Shapes ◽  
Band Position

Isotropic Raman line shapes of simple molecular fluids exhibit critical line broadening near their respective liquid-gas critical points. In order to observe this phenomenon, it is essential that the band position of a given vibrational mode is density-dependent, and that vibrational depopulation processes negligibly contribute to line broadening. Special attention was given to the fact that the isotropic (i.e., nonrotationally broadened) line shape of liquid N2 is affected by resonant intermolecular vibrational interactions between identical oscillators. By means of the well-chosen isotopic mixture (14N2).975 - (14N15N).025, the temperature and density dependences of shift, width, and asymmetry of the resonantly coupled 14N2 and, depending on the S/N ratio available, of the resonantly uncoupled 14N15N were determined, with up to milli-Kelvin resolution, in the coexisting liquid and gas phases and along the critical isochore, using a highest-resolution double monochromator and modern charge-coupled device detection techniques. Clear evidence was found that vibrational resonance couplings are present in all dense phases studied.

Infrared Studies of Rotational and Vibrational Relaxation in Liquid Cyclohexane

1982 ◽  
Vol 37 (1) ◽  
pp. 51-54
Author(s):  
T. Bien ◽  
G. Döge ◽  
J. Yarwood ◽  
K. E. Arnold
Keyword(s):  
Correlation Functions ◽  
Vibrational Relaxation ◽  
Molecular Correlation ◽  
Infrared Studies ◽  
Different Temperatures

Abstract Molecular correlation functions have been determined for the infrared active vibrations ν16, ν29 , ν30 and ν31 of neat liquid cyclohexane at different temperatures. The results have been com-pared with calculated reorientational correlation functions.

Polaritons in tetragonal BaTiO3; Theory of the Raman line shape

1970 ◽  
Vol 8 (17) ◽  
pp. 1387-1393 ◽  
Author(s):  
H.J. Benson ◽  
D.L. Mills
Keyword(s):  
Raman Line ◽  
Line Shape

Raman-line-shape study ofInxGa1−xAs on InP and GaAs substrates

1994 ◽  
Vol 50 (3) ◽  
pp. 1678-1683 ◽  
Author(s):  
J. L. Shen ◽  
I. M. Chang ◽  
Y. M. Shu ◽  
Y. F. Chen ◽  
S. Z. Chang ◽  
...  
Keyword(s):  
Raman Line ◽  
Line Shape ◽  
Gaas Substrates

Stochastic model for correlation functions from anisotropic Raman line shapes

1995 ◽  
Vol 26 (8-9) ◽  
pp. 771-775 ◽  
Author(s):  
Mauro C. C. Ribeiro ◽  
Paulo S. Santos
Keyword(s):  
Stochastic Model ◽  
Raman Line ◽  
Correlation Functions ◽  
Line Shapes

scholarly journals Size dependence of Raman line-shape parameters due to confined phonons in silicon nanowires

2020 ◽  
Vol 6 (4) ◽  
pp. 669-676 ◽  
Author(s):  
Km Neeshu ◽  
Chanchal Rani ◽  
Ritika Kaushik ◽  
Manushree Tanwar ◽  
Devesh Pathak ◽  
...  
Keyword(s):  
Raman Line ◽  
Silicon Nanowires ◽  
Line Shape ◽  
Size Dependence ◽  
Shape Parameters ◽  
Confined Phonons
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