A readily applicable procedure is presented for calculating the contribution of one-phonon scattering (TDS) to measured integrated intensities for single crystals of any symmetry under conventional experimental situations. The anisotropy of the scattering is included correctly within the continuum elasticity approximation. A computer program is presented for the calculation of TDS contribution for cubic, tetragonal, orthorhombic, hexagonal and trigonal crystal structures. The procedure is applied to the calculation of the one-phonon contribution for the hexagonal and tetragonal crystal structures.

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2. Calculation methods 2.1. Dynamical matrix Zone-centre lattice vibrations in a-sulphur including effects o f hydrostatic pressure. J .

Lattice statics with deformable molecules; a-sulphur under hydrostatic pressure. J. Kurittu (