| 摘要 |
A gas discharge apparatus (100) with a cylindrical axis, comprising: at least one pair of electrodes (106, 110); a cylindrical outer tube (114), surrounding the axis; a cylindrical inner tube (102) surrounding the axis; and a gas contained between said inner tube (102) and said outer tube (104), of suitable composition and pressure to create a gas discharge current when sufficient voltage is applied to said electrodes (106, 110), wherein no discharge is present inside the inner tube (102) during operation. |
