Experimental Study of a Conical Theta-Pinch Plasma Gun

概要

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Properties of plasma produced with a conical theta-pinch gun are described. Streak photography, magnetic probe method and laser interferometry are used for the measurement of the plasma. When the coil current is crowbarred, a single pulsed helium plasma is produced with the following characteristics: velocity of 1∼5 cm/μsec, radially averaged electron density of 0.4∼4×10^<16>/cm^3 and electron temperature of 5∿6×10^4 K. The length of the plasma is shortened by the diversion of the coil current. The gun system has the multipole windings to isolate the plasma from the wall of the conical discharge chamber. Impurities in the plasma are examined using the spectral line from silica ions, and the effect of the multipole field is not any noticeable for the impurity reduction.
社団法人応用物理学会の論文
1973-02-05