The absolute intensity of depolarised light scattering from liquid argon

✍ Scribed by J.H.R. Clarke; J. Bruining

• Publisher: Elsevier Science
• Year: 1981
• Tongue: English
• Weight: 251 KB
• Volume: 80
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(81)80053-x

✦ Synopsis

The depolarised light scattering intensity from hquid argon has been measured relative to the 991 cm-l Raman line of benzene, whose absolute intenstty is known-The mean-square induced polarisability anisotropy is (10.6 f 1.0) X 10Vs' cm6, approximately five times larger than prevrously reported, but in agreement with simulatrons based on the dipoleinduced-dipole model and with another recent measurement. There exists some controversy concerning the detailed mechanism of depolarised "collision-induced" light scattering from argon at liquid densities. In an attempt to evaluate the simple dipole-induced-dipole model computer simulation calculations were used [l] to determine the expected total scattering intensity and a value was reported which was about six times larger than quoted from experimental data, and this was said to cast doubt on the proposed mechanism.