Abstract
A measurement of surface temperature has been developed for pulsed radiation dose levels such that vaporization of the material under investigation is obtained. This method, which has been successfully used, is based on the kinetic definition of temperature, and can be used for temperatures above the vaporization threshold and beyond without changing the physical phenomena. A detector located at a distance l from the target establishes the speed distribution of atoms ejected, from which we deduce the temperature. The rise time of the leading portion of the signal obtained depends on the temperature. Compared to optical methods, this method has the advantage of being unaffected by the electromagnetic and bremsstrahlung noises inherent to electron generators. Moreover, the hydrodynamic expansion velocity can be calculated and the blowoff density estimated. This method can also be used in the case of other pulsed energy sources such as photons or ions.
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