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X-Ray Brillouin Scattering

1972; American Physical Society; Volume: 28; Issue: 23 Linguagem: Inglês

10.1103/physrevlett.28.1519

1092-0145

P. Eisenberger, N. G. Alexandropoulos, P. M. Platzman,

Geophysics and Sensor Technology

An investigation of x-ray scattering, when the Bragg condition is nearly satisfied, reveals the possibility of studying phonon phenomena at momenta as small as ${10}^{4}$ ${\mathrm{cm}}^{\ensuremath{-}1}$. A closer study of elastic Bragg scattering in that region provides an explanation for the previously observed "coherent crystal radiation."