Collision-induced hyper-Rayleigh spectrum of octahedral molecules: The case of SF6

A theoretical expression giving the collision-induced hyper-Rayleigh (CI HR) spectrum due to pairs of centrosymmetric molecules of octahedral symmetry has been derived. The dipole2-quadrupole hyperpolarizability light scattering mechanism of collision-induced hyperpolarizability ΔβLM is discussed in...

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Bibliographic Details
Published in:The Journal of chemical physics 2001-11, Vol.115 (18), p.8547-8551
Main Authors: Bancewicz, Tadeusz, Godet, Jean-Luc, Maroulis, George
Format: Article
Language:English
Subjects:
Physics
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Summary:A theoretical expression giving the collision-induced hyper-Rayleigh (CI HR) spectrum due to pairs of centrosymmetric molecules of octahedral symmetry has been derived. The dipole2-quadrupole hyperpolarizability light scattering mechanism of collision-induced hyperpolarizability ΔβLM is discussed in detail and proposed to explain the CI HR spectrum. Numerically we have applied our analytical formulas to binary CI HR spectrum of sulfur-hexafluoride. We have normalized our SF6 CI HR spectrum to the monomer HR spectrum of CCl4. The spectral contribution due to second hyperpolarizability-permanent hexadecapole HR light scattering mechanism has been estimated and showed to be negligible.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.1410979