Experimental study of the disintegration of an instantaneously heated medium and the resulting impulse at energy concentrations less than the heat of evaporation
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An experiment using the radiation from a Q-switched laser was carried out to confirm the phenomenon of detachment of the surface layer of a material when it is rapidly heated at energy concentrations less than the heat of evaporation Q . The disintegration of the material was recorded by high-speed photography. Measurements were made of the impulse I for different energy concentrations, and it was shown that the dependence of I on the supplied energy E was in good agreement with the theoretical calculations reported in .
It is shown that by determining the pressure impulse produced during the disintegration of the rapidly heated material it is possible to investigate its thermodynamic properties at densities approaching the normal value.
KeywordsSurface Layer Energy Density Thermodynamic Property Energy Concentration Photography
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