We report measurements of the laser excitation thresholds for the onset of electron-hole---droplet luminescence in Si in the temperature range 2.5-19.3 K. The results are consistent with finite-lifetime nucleation theory. Fits to the data determine a surface tension {}1.1×{}10^-2 erg/cm² and a sticking fraction {}5%.
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Hammond et al. (1979) studied this question.
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