Abstract
AbstractThis paper is concerned with the study of the dynamics of the expanded dense plasma from a coaxial electrodes discharge device. Experimental investigations were carried out with hydrogen gas at 0.8 Torr base pressure. The condenser bank voltage was 12 KV, which corresponds to a capacitor bank energy of 4.5 KJ.The experimental results show that a shock wave is generated near the muzzle, and is separated from the plasma shell. The shock front velocity (Vs) and the plasma shell velocity (V1) decay within propagation up to 14 cm according to the relations, Vs ∞ Z−1 and V1 ∞ Z−2. At Z = 14 cm a discontinuity in the velocity curves occurs, where velocities of both the shock front and the plasma shell are increased. The distribution of the self‐induced axial magnetic field along the expansion chamber axis shows that at Z = 14 cm the magnetic field lines have a solitary form. Its value is decreased before Z = 14 cm according to Bz ∞ Z−1, but after Z = 14 cm as the relation Bz ∞ Z−3. The time evaluation of soft X‐ray consists of two different spikes.
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