title: Far infrared study of the copper halides at low temperatures.
abstract: The far infrared spectra of the copper halides CuCl, CuBr, and Cul have been measured in transmission and in reflection at various fixed temperatures from room temperature to liquid-helium temperature. Marked changes of such parameters as resonance frquency and damping as a function of temperature have been observed, also a line-splitting in the case of CuCl. In addition, a considerable increase in the asymmetry of the transmission curves with decreasing temperature has been observed.
authors.affiliation: Air Force Cambridge Research Laboratories, Bedford, Massachusetts, USA.
authors.forename: J N
authors.initials: JN
authors.lastname: Plendl
authors.forename: A
authors.initials: A
authors.lastname: Hadni
authors.forename: J
authors.initials: J
authors.lastname: Claudel
authors.forename: Y
authors.initials: Y
authors.lastname: Henninger
authors.forename: G
authors.initials: G
authors.lastname: Morlot
authors.forename: P
authors.initials: P
authors.lastname: Strimer
authors.forename: L C
authors.initials: LC
authors.lastname: Mansur