Wienecke, R.

Wulff, H.

English

MPG.PuRe

96- THU, B 9 JlXPERIMENTAL \DEVICES "BOGEN" AND "EIERUHR" FOR THE PRODUCTION OF HIGH DENSITY STEADY STATE PLASMA IN THE TElotPE_RATURE RANGE ABOVE to eV by R. W1enecke and H. Wulff Instltut rur Plaamaphyslk, Garchlng b. MUnchen, Germany Abstract The maximum temperature that can be obtaiRed in steady state high pressure arc discharges ls limited by the radial heat con-duction losses. The application of a strong axial magnetic field to such discharges reduces thermal conductivity of the plasma pro-vided wC> 1. As a result of this, the temperature of the plasma inorea.es appreciably over the value that corr~sponds to zer o mag-netic fi eld, even though the power input requlred per unit length of the discharge column remains the same or decreases. Further-more, the magnetic field causes a radial pressure increase to-wards the axis of the discharge co lumn. The effects of the magnetic have been investigated in two dif-ferent experiments. In the first experilllent C'Bogen") an arc discharge has been maintained for a few seconds a hydrogen flow at total current values up to 3 kA and magnetic indUction field strengths up to 30 k r. In the s econd experiment (IIEieruhr'l) ~ an impulse discharge of 1 msec duration is produced in a closed vessel filled with hydrogen or helium. In this the total current and the magnetic indUction could be varied up to 5 kJ:t and 80 kr, respectively. In both experiments, the plasma is clearly separated from ~he wall and is free from impurities. Temperatures up to 4.105 OK and part1cle densities up to 2.1016 cm-3 have been measured. 

Experimental devices Bogen and Eieruhr for the Production of High Density Steady State Plasma in the Temperature Range Above eV

http://hdl.handle.net/21.11116/0000-0008-B97D-C

Experimental devices Bogen and Eieruhr for the Production of High Density Steady State Plasma in the Temperature Range Above eV

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