title: [The spectroscopic study of topaz].
abstract: In this paper, the natural gem material--Topaz (colorless transparent samples and reactor irradiation induced blue color samples) was studied on the spectroscopic analysis of Fourier transformation infrared spectrum (FTIR) and FT-Raman spectrum. The structure of topaz consists of OH groups and SiO4 groups. Si-O vibration spectrum was characterized with the group theoretical analysis. OH stretching modes of vibration showed many changes among the different color samples, the reason of the changes was explained. The color origin was preliminary investigated by ultra-violet and visible absorption spectrum.
authors.affiliation: Northwest Institute of Nuclear Technology, 710024 Xi'an.
authors.forename: B
authors.initials: B
authors.lastname: Wang
authors.forename: J
authors.initials: J
authors.lastname: Tu
mesh_terms: D019279:Resin Cements / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D019279:Resin Cements; C079516:Topaz resin