Striated Column Appearing in High Frequency GaS Discharge.

概要

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Stationary striations appearing in the plasma column of low pressure argon h. f. discharge brought about in cylindrical discharge tube of diameter from 5.8 to 18mm are investigated experimentally for the pressure range from 0.07 to 8mmHg. Their spatial intervals (so-called "wave-length") are proportional to the electrodes distance within a limited range of the wave-length. The relation between the wave-length and the electrodes distance is shown by sawteeth-like characteristics. The wave-length increases linearly as the radius of the discharge tube increases. But it decreases exponentially as the gas pressure increases. The influence of the frequency of the h. f. source does not exist over a range from 5mc to 53mc. The wave-length, however, increases as the h. f, power increases. When a d.c. voltage is superposed on the h. f. field through another pair of electrodes, striations move from positive side to negative side at a velocity proportional to the d. c. current. These results indicate that the stationary striations appearing in h. f. discharge can be regarded as a special state of moving striations.
社団法人日本物理学会の論文
1965-09-05