| 摘要 |
PCT No. PCT/GB79/00168 Sec. 371 Date Jun. 20, 1980 Sec. 102(e) Date Jun. 17, 1980 PCT Filed Oct. 19, 1979 PCT Pub. No. WO80/00898 PCT Pub. Date May 1, 1980.In electrical discharge apparatus, such as a gas laser, in which a glow discharge is to be produced in a gas between two electrodes, at least one pre-ionizing member is placed near the discharge space and extending between the electrodes so that current flows in the member which is made of intermediate resistivity material such as crystalline semiconductor material. As a result, the discharge space is pre-ionized which assists initiation of the main discharge. The pre-ionization may be due to the formation of numerous small arcs between the electrodes and the member and the resulting production of ultra-violet light. |
