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Brillouin scattering
Vacher, R. and Courtens, E.  International Tables for Crystallography (2013). Vol. D, ch. 2.4, pp. 349-355 [ doi:10.1107/97809553602060000914 ]
... liquids and in crystals as well as in disordered solids. Vacher & Boyer (1972) and Cummins & Schoen (1972) have performed a detailed ... applied to the displacement u of an elementary volume at r in a homogeneous material is Summation over repeated indices will ... described in terms of the third-rank electro-optic tensor r defined by Using the same approach as in (2.4.2.10), ...

Use of the tables
Vacher, R. and Courtens, E.  International Tables for Crystallography (2013). Vol. D, Section 2.4.5, p. 351 [ doi:10.1107/97809553602060000914 ]
... les symétries cristallines que peut révéler la diffraction des rayons Röntgen. C. R. Acad. Sci. Paris, 157, 1533-1536. International Tables for Crystallography ...

Scattering cross section
Vacher, R. and Courtens, E.  International Tables for Crystallography (2013). Vol. D, Section 2.4.4.2, pp. 350-351 [ doi:10.1107/97809553602060000914 ]
... sample, is Substituting (2.4.4.9a,b,c) in (2.4.4.7), one obtains (Vacher & Boyer, 1972) where the coupling coefficient is In the cases ... be written in the simpler form References Hayes, W. & Loudon, R. (1978). Scattering of light by crystals. New York: Wiley. Vacher, R. & Boyer, L. (1972). Brillouin scattering: a tool ...
     [more results from section 2.4.4 in volume D]

Coupling via the electro-optic effect
Vacher, R. and Courtens, E.  International Tables for Crystallography (2013). Vol. D, Section 2.4.3.2, p. 350 [ doi:10.1107/97809553602060000914 ]
... described in terms of the third-rank electro-optic tensor r defined by Using the same approach as in (2.4.2.10), for ...
     [more results from section 2.4.3 in volume D]

Piezoelectric media
Vacher, R. and Courtens, E.  International Tables for Crystallography (2013). Vol. D, Section 2.4.2.2, pp. 349-350 [ doi:10.1107/97809553602060000914 ]
Piezoelectric media 2.4.2.2. Piezoelectric media In piezoelectric crystals, a stress component is also produced by the internal electric field E, so that the constitutive equation (2.4.2.2) has an additional term (see Section 1.1.5.2 ), where e is the piezoelectric tensor at constant strain. The electrical displacement vector D, related to E by ...
     [more results from section 2.4.2 in volume D]

Introduction
Vacher, R. and Courtens, E.  International Tables for Crystallography (2013). Vol. D, Section 2.4.1, p. 349 [ doi:10.1107/97809553602060000914 ]
... liquids and in crystals as well as in disordered solids. Vacher & Boyer (1972) and Cummins & Schoen (1972) have performed a detailed ... interferometer. J. Opt. Soc. Am. 51, 398-399. Sandercock, J. R. (1971). The design and use of a stabilised multipassed ... studied by inelastic X-ray scattering. Science, 280, 1550-1555. Vacher, R. & Boyer, L. (1972). Brillouin scattering: a tool ...

Techniques of Brillouin spectroscopy
Vacher, R. and Courtens, E.  International Tables for Crystallography (2013). Vol. D, Section 2.4.6, pp. 351-355 [ doi:10.1107/97809553602060000914 ]
... an instrument is , where is the optical thickness. Values of R around to can be achieved. It is impractical to increase ... followed by a spherical instrument of high resolution (Pine, 1972; Vacher, 1972). To analyse the linewidth of narrow phonon lines ... derived by electro-optic modulation of the exciting laser (Sussner & Vacher, 1979). In this case, not only the width ...

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