Depolarized Rayleigh spectroscopy of small alkanes with picosecond relaxation times
作者： G. D. Patterson , P. J. Carroll
DOI: 10.1063/1.443569
关键词: Butane 、 Photochemistry 、 Pentane 、 Rayleigh scattering 、 Relaxation (NMR) 、 Picosecond 、 Molecular physics 、 Nonane 、 Intermolecular force 、 Chemistry 、 Polarizability
摘要: Depolarized Rayleigh scattering is studied as a function of temperature in group small alkanes under conditions where the observed relaxation time picosecond range. The molecules include n‐alkanes from pentane to nonane, 2‐methyl butane, 2,3‐dimethyl 2,4‐dimethyl pentane, 2,2,4,4‐tetramethyl and 3,3‐diethyl pentane. In n‐alkanes, spectrum dominated by molecular optical anisotropy second rank reorientational determined. other systems, depolarized determined intermolecular due dipole‐induced dipole interactions between pairs density fluctuations. linewidth can be accurately predicted using theory Madden [Mol. Phys. 36, 365 (1978)]. present results are intended serve an accurate data base for rapidly improving computer calculations dynamics alkanes.
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