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Laser excited Raman spectrum of ammonium sulfate single crystal
Author(s) -
Venkateswarlu P.,
Bist H. D.,
Jain Y. S.
Publication year - 1975
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250030205
Subject(s) - raman spectroscopy , excited state , excitation , laser , ion , chemistry , crystal (programming language) , phonon , lattice (music) , single crystal , spectral line , polarization (electrochemistry) , crystal structure , molecular physics , raman scattering , analytical chemistry (journal) , atomic physics , materials science , crystallography , optics , condensed matter physics , physics , organic chemistry , computer science , programming language , quantum mechanics , astronomy , chromatography , acoustics
The Raman spectra of (NH 4 ) 2 SO 4 single crystals have been recorded and measured using an Ar + laser as a scource of excitation. The polarization behaviour of the Raman lines in different crystal orientations has been studied. The observed shifts in the range 15–3400 cm −1 have been attributed to the phonons of different symmetry species originating from the internal modes of NH 4 +and SO 4 2−ions and the lattice modes calculated from group theoretical considerations.