We report neutron-scattering measurements on highly supercooled liquid gallium droplets showing a vanishing quasi-elastic frequency width as the temperature is reduced. The width tends towards zero at a temperature within 1 standard deviation of the value TL=150±1 K at which gallium is always observed to become crystalline. This suggests the interpretation of TL as a metastability limit, below which the liquid state becomes unstable with respect to infinitesimal fluctuations.
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Bosio et al. (1975) studied this question.
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