Phase Transitions of the First Kind as Radiation Processes

Physics – Optics

Scientific paper

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17 pages

Scientific paper

10.1016/j.physleta.2007.11.056

Crystallization and vapor condensation are considered as processes of sequential entering of single atoms/molecules into condensate. The latent heat can be carry away by radiation of characteristic frequencies generated in the course of transition. The estimated dependences of latent (radiated) energy of boiling on temperature confirm and prove the well-known empirical Trouton's rule applicable to many simple substances. It leads to the estimation of interrelation of critical parameters of corresponding substances. Experimental results of the authors and other researchers concerning crystallization from the melt of different substances (alkali halides, sapphire, tellurium, ice, copper) are presented, as well as condensation of water vapor, the correspondence to the offered model is established. It allows developing of the spectroscopy of phase transitions, and can lead to control of crystallization process, to crystallization stimulated by the characteristic radiation, etc. Formation of clouds in our atmosphere should be accompanied by characteristic radiation detectable for meteorological warnings.

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