Abstract
A method for determining the parameters of energy release in dense cascades of atomic displacements and for estimating the temperature and the level of pressures in thermalized cascade regions (thermal spikes) is proposed. It is based on the measurement and analysis of the spectral composition of the surface glow of condensed media in the course of irradiation with Ar+ 5-15 keV accelerated ions, under the assumption of the presence of a thermal component of glow defined by the presence of thermalized cascade regions.
Highlights
Many authors observed the surface glow of various substances in the visual range under the action of accelerated ion beams
Summary It is shown that the continuous spectral bands in the range 400-700 nm, as part of the surface emission spectra of metal targets (Al, Fe, and W), in the course of their bombardment by Ar+ 5-20 keV can be approximated by the Planck curves of thermal radiation
Numerical models of the evolution of atomic displacement cascades to the stage of thermal spikes can explain the tendency to a decrease in the temperature of these spikes with increasing ion energy
Summary
Many authors observed the surface glow of various substances in the visual range under the action of accelerated ion beams. This can be, e.g., the emission from so-called "thermal spikes" that are formed in the immediate vicinity of the surfaces of solids [4, 5] bombarded by ions of low and medium energy (1-100 keV).
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