Abstract
Processed data is taken from the D-D fusion reaction experiments on PF-1000 at IFPILM Warsaw, operating with 2 MA, 1011 neutron yield, using interferometry, temporal resolved neutron diagnostics, magnetic probe diagnostics and X-ray diagnostics. The inductance is calculated under two different circumstances: with the known distribution function determined by the magnetic probe signal, and with the border of the plasma column determined from interferograms using Matlab. The inductance of the whole column is calculated using the formula for the inductance of a coaxial cylinder.
Highlights
Interferometry is a method for visualizing plasma and for obtaining some information about its structure and density
Counters with activated silver are used for total neutron yield estimation [4]
It is multiplied by the corresponding value of the distribution function, and added us up to get the inductance of the whole plasma column
Summary
Interferometry is a method for visualizing plasma and for obtaining some information about its structure and density. The PF-1000 plasma focus device, located at IPPLM in Warsaw, has recently been operating with 2 MA with 1011 neutron yield [7]. Interferometry, neutron diagnostics, hard X-ray diagnostics, and magnetic probes diagnostics [5] are used, along with measurements of current, its time-derivative and voltage with nanosecond resolution. The magnetic probes are induction-type probes customized for the PF-1000 device They register the temporal derivative of the azimuthal magnetic field at the anode front, and this enables the current density to be determined. The second calculation is based on estimating the current distribution from the magnetic probe data during the implosion
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