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THE HEATING OF PLASMA FOCUS ELECTRODES.

By ANGELI E., FRIGNANI M., MANNUCCI S., ROCCHI F., SUNINI M. and TARTARI A.

Abstract

Plasma focus (PF) technology development today is strictly related to the possibility of a high frequency repetitive working regime. One of the more relevant obstacles to this goal is the heating of structural components due to direct interaction with plasma. In this paper, temperature decay measurements of the inner electrode of a 7 U Mather type PF are presented. Data from several series of shots at different bank energies are analysed and compared with theoretical and numerical models. Two possible scale laws are derived from the experimental data to correlate thermal deposition with bank energy. It is found that a fraction of about 10% of total energy is released to the inner electrode. Finally, after some considerations about the cooling and heating mechanisms, an analysis on maximum temperature sustained by materials is presented

Topics: Plasma Focus, heat loading, material testing
Year: 2006
OAI identifier: oai:iris.unife.it:11392/1210338
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