Computing plasma focus pinch current from total current measurement

S. Lee, S. H. Saw, P. C. K. Lee, R. S. Rawat, H. Schmidt
2008 Applied Physics Letters  
The total current I total waveform in a plasma focus discharge is the most commonly measured quantity, contrasting with the difficult measurement of I pinch . However, yield laws should be scaled to focus pinch current I pinch rather than the peak I total . This paper describes how I pinch may be computed from the I total trace by fitting a computed current trace to the measured current trace using the Lee model. The method is applied to an experiment in which both the I total trace and the
more » ... ma sheath current trace were measured. The result shows good agreement between the values of computed and measured I pinch .
doi:10.1063/1.2899632 fatcat:bknyefagnfgvxf2y7fgrgcfea4