Temperature dependence of the Raman scattering spectrum of molten CsCl

Raptis, C; McGreevy, RL

dc.contributor.author	Raptis, C	en
dc.contributor.author	McGreevy, RL	en
dc.date.accessioned	2014-03-01T01:09:05Z
dc.date.available	2014-03-01T01:09:05Z
dc.date.issued	1992	en
dc.identifier.issn	0953-8984	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/10827
dc.subject.classification	Physics, Condensed Matter	en
dc.subject.other	LIGHT-SCATTERING	en
dc.subject.other	COLLECTIVE MODES	en
dc.subject.other	HALIDES	en
dc.subject.other	ALKALI	en
dc.subject.other	SALTS	en
dc.title	Temperature dependence of the Raman scattering spectrum of molten CsCl	en
heal.type	journalArticle	en
heal.identifier.primary	10.1088/0953-8984/4/25/003	en
heal.identifier.secondary	http://dx.doi.org/10.1088/0953-8984/4/25/003	en
heal.identifier.secondary	003	en
heal.language	English	en
heal.publicationDate	1992	en
heal.abstract	Light scattering measurements have been carried out in molten CsCl over the temperature range 945-1245 K. Assuming the molten salt system to be a quasi-harmonic oscillator, the authors have found that the integrated intensity of the spectra increases with temperature at rates that exceed those anticipated for first-order scattering. The spectral variation of the intensity shows that the excess scattering, due mainly to second-order summation or difference bands, occurs in the low-frequency region (up to 80 cm-1) and the high-frequency tail (above 150 cm-1). The average depolarization ratio rho d of the spectra remains constant with temperature, but the depolarization ratio spectrum shows that (a) rho d( nu ) increases with T up to approximately=60/sup /cm-1 and (b) decreases with T above 60 cm-1. This is explained as due to a transition of the ions that contribute most strongly to the scattering from an anisotropic environment, determined by binary collisions to a more isotropic environment determined by the average local structure.	en
heal.publisher	IOP PUBLISHING LTD	en
heal.journalName	Journal of Physics: Condensed Matter	en
dc.identifier.doi	10.1088/0953-8984/4/25/003	en
dc.identifier.isi	ISI:A1992JA39300003	en
dc.identifier.volume	4	en
dc.identifier.issue	25	en
dc.identifier.spage	5471	en
dc.identifier.epage	5478	en