| 摘要 |
Ion gun comprising a cathode with a charge exchange chamber and emission holes, anode and extraction electrode as well as the magnetic system which creates the magnetic field over the surface of the anode, characterized in that on the emission side of the cathode charge exchange chamber (1), there is an additional magnetic system (7) creating the magnetic field within the cathode charge exchange chamber (1) over the emission surface of the cathode (1).<IMAGE>
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