Development of Analyzer of Pulse Radiation and Heat Flows with Laser Ablation of Condensed Media under Vacuum

Results of test measurements of pulse radiation and heat flows with laser ablation of polymer and metallic targets under vacuum are obtained using the hot probe construction, developed on the basis of a grid analyzer and three-layer metallic bolometer with bismuth thermistor having the time resolution of 1.5-2.0 μs and sensitiveness of 10^-5-10^-6 J/cm^2. Operation technology is briefly described which allows an internal photo-effect in the bolometer thermistor to be thoroughly eliminated and the current contact with the investigated sample to be avoided. Grids with retarding fields and the gas filter make possible not only to determine an energy spectrum of charged particles but also to register individual energies of charged particles, neutrals and radiation within the absorption spectrum of the receiving element of the hot probe.