Abstract
We have determined the temperature and hydrodynamic speed of a thin tantalum anode heated by a pinched relativistic electron beam. These measurements were simultaneously realized by analyzing the speed distribution of thermal ions emitted by the plasma. The plasma ions can be represented by a Maxwellian velocity distribution superposed upon an expansion velocity u. In the particular experimental condition with rapid short circuit, the interaction was realized by electrons of low energy. The maximal temperature obtained with a thin 25-μm tantalum anode was of the order of 20 eV and hydrodynamic speed 1.4 cm/μs. The characteristics of the electron beam generator used were 600 kV, 200 kA, and 60 ns.
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