THEORETICAL INFRARED SPECTRUM OF A POLYATOMIC POINT DEFECT

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1973

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Ohio State University

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A preliminary report of the progress made in calculating theoretical infrared spectra will be given. The system of interest is silane trapped as a point-defect impurity in rare-gas crystals. Computer programs have been developed for calculating the phonon-dispersion curves of the rare-gas crystals and for calculating the imperfect-crystal Green ‘s functions in a symmetry-adapted basis. All calculations are done in the irreducible 1/48 part of the first Brillouin zone. Calculations of infrared absorption coefficients are currently in progress. The theory and computational problems will be discussed.

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Author Institution: Department of Chemistry, Texas Tech University

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