Messung der Druckerhöhung in einem Wasserstoff-Lichtbogen bei überlagertem axialem Magnetfeld

Abstract

In a cylindrically symmetric hydrogen arc discharge located in an axial magnetic field, pressure is increased in the inner region, where ionization occurs. Measurements were made with initial pressures of 7.5 and 15 torr, with temperatures between 8000 and 12 000 °K, and with magnetic inductions of 8.5 and 12.5 kGauss. A mercury gauge was connected to a small opening in the anode to measure the radial pressure distribution in the plasma. Temperatures and electron densities were determined spectroscopically. The SAHA equation was found to be applicable in this case. Therefore, experimental results can be compared with theory based on the SAHA equation.