Energy Dissipation in Run-Down Phase of Mather-Type Plasma Focus Discharges
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概要
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The influence of the cathode structure on the focus discharges in a 7 kJ Mather-type plasma focus device was investigated by using two types of cathode electrodes, 1) bar and 2) tubular cathodes. In the present experimental results that were obtained under optimized conditions except the cathode structure, the cathode structure had a great influence on energy dissipation in the run-down phase and hence the neutron yield. The energy dissipation in the run-down phase was much lower in the bar cathode than in the tubular one and as a result, the pinch current and the neutron yield were higher in the bar cathode. The experimental results obtained by many authors using both cathodes do not seem to support our experimental results. However, they were obtained in different devices with the bar or tubular cathode. It seems that for a complete comparison it is necessary to investigate both types of cathode in the same device under optimized experimental conditions.
- 社団法人日本物理学会の論文
- 2003-03-15