The influence of a transverse magnetic field on a glow discharge tube

概要

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The positive column of low pressure discharge has been used for an illuminating lamp, a gas laser and a plasma display device. When a transverse magnetic field is applied on a positive column, the plasma parameters such as an axial electric field, an electron temperature and an electron density are increased. As a result, the light intensity of a gas laser, for example, is increased with the transverse magnetic field. In this paper, the experimental results on such plasma parameters and the light intensity are measured for the cylindrical discharge tube filled with neon gas. The tube used is 40 mm in diameter and the discharge current is 20-60 mA. The magnetic field is varied from 0 to 1000 G. It was found that the above mentioned plasma parameters were increased with the magnetic field, and that this effect is more remarkable at lower gas pressure. The experimental results were discussed qualitatively with the wall effect of electrons in the positive column.
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