Accession Number : AD0604273

Title :   NEW CRYOGENIC METHOD FOR RAMAN STUDIES OF MOLECULAR CRYSTALS.

Descriptive Note : Technical rept. no. 17,

Corporate Author : PRINCETON UNIV N J FRICK CHEMICAL LAB

Personal Author(s) : Savoie,R. ; Anderson,A.

Report Date : JUL 1964

Pagination or Media Count : 16

Abstract : A new technique has been developed for growing good quality molecular crystals, suitable for Raman studies at low temperatures. The method utilizes a copper rod, cooled by a suitable refrigerant, which lies axially in the sample tube. The crystal grows radially around the rod from the melt. Liquid nitrogen and helium cryostats, incorporating this method, for use with the Cary 81 Spectrophotometer, are described. These can be readily modified to suit other Raman instruments. Low Rayleigh scattering near the exciting line and the very sharp spectral lines of a number of samples so far studied indicate the good quality of such crystals, grown in a relatively short time. (Author)

Descriptors :   (*CRYSTAL GROWTH, CRYOGENICS), (*RAMAN SPECTROSCOPY, CRYSTALS), LIQUEFIED GASES, CRYOSTATS, SINGLE CRYSTALS, AMMONIA, SULFUR COMPOUNDS, DIOXIDES, METHANE, HYDROCHLORIC ACID, HYDROGEN COMPOUNDS, BROMIDES, SCATTERING, MOLECULAR ASSOCIATION

Distribution Statement : APPROVED FOR PUBLIC RELEASE