Dynamic light scattering at the nonequilibrium crystal-melt interface in biphenyl and naphthalene

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Abstract
A strong-quasielastic laser light scattering at the growing crystal-melt interface of both biphenyl and naphthalene was observed in an experiment similar to the one first performed by Bilgram, Guttinger, and Kanzig [Phys. Rev. Lett. 40, 1394 (1978)]. Since its first observation, the origin of this light scattering remained unexplained. Cummins et al. [Solid State Commun. 60, 857 (1986)] suggested that this light scattering was caused by precipitated microbubbles of gases segregated at the growing interface. We report here the first quantitative confirmation of the microbubble hypothesis.