Accession Number : AD0622091

Title :   FAR-INFRARED SPECTRA OF CRYSTALS AND SOLIDS IN A LARGE RANGE OF TEMPERATURES.

Descriptive Note : Annual summary rept. no. 3, 1 May 64-30 Apr 65,

Corporate Author : CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE PARIS (FRANCE)

Personal Author(s) : Lecomte,J. ; Hadni,A.

Report Date : 15 MAY 1965

Pagination or Media Count : 31

Abstract : Far-Infrared absorption spectra were obtained of thallium halides, copper halides, rare earth fluorides, dysprosium gallate, B2O3, quartz. Reflexion spectra of ZnTe, CdTe, ZnSe, Thallium halides and Copper halides were obtained at room temperature, liquid nitrogen, liquid hydrogen and liquid helium temperature from 40 to 900 microns. The different behaviour of crystals and glasses in the farinfrared at low temperature and the evidence of single phonon processes in glasses and ionic crystals is considered. (Author)

Descriptors :   (*INFRARED SPECTROSCOPY, LOW TEMPERATURE), (*CRYSTALS, INFRARED SPECTRA), (*GLASS, INFRARED SPECTRA), THALLIUM COMPOUNDS, COPPER COMPOUNDS, HALIDES, RARE EARTH COMPOUNDS, FLUORIDES, DYSPROSIUM COMPOUNDS, GALLATES, BORON COMPOUNDS, OXIDES, QUARTZ, ZINC COMPOUNDS, CADMIUM COMPOUNDS, TELLURIDES, SELENIDES, PHONONS, IMPURITIES, FRANCE, TELLURIUM ALLOYS, CADMIUM ALLOYS, ZINC ALLOYS

Distribution Statement : APPROVED FOR PUBLIC RELEASE