| 摘要 |
<p>@ Apparatus and method for producing a pluri-energetic electron beam source. The apparatus includes a housing (10) which functions as an anode, the same having an electron emission window (12) convered by an electron-transparent grid, a cathode body mounted within the housing (10) and electically isolated therefrom, the spacing between the cathode body and grid being sufficient to permit a gas discharge to be maintained between them having a plasma region substantially thinner than the cathode sheath region. The method involves the simultaneous feeding of gas between a cathode body and an anode grid, applying voltages of about 10 kV to 20 kV and regulating the gas feed rate and the voltage to maintain a discharge condition of the character described above.</p> |
