Study of transfer efficiency in a screw pinch plasma

A screwpinch for UV generation and possible FAIR plasma stripper applications was designed based on a previous development. The intention was to increase the applicable voltage and as a result the electron density. Research was conducted into the transfer efficiency for plasma generation providing preliminary values up to 66 \%. The device operates at a frequency of approximate 14 $kHz$ and is characterised by a capacity of 34 $\mu F$, a thyratron switch with a maximum current rise time of 5 $\textsc{MA}/\mu s$ as well as a variable set of up to 5 planar coils with diameters of 172 and 208 $mm$. A cylindrical volume of 4 $l$ can thusly be ignited within the region of 5$\cdot$10$^{-3}$ to 1 $mbar$ with an applied voltage of 6 to 13 $kV$, resulting in peak electron densities of 4$\cdot$10$^{16}$ electrons per $cm^3$.