| 摘要 |
Excited energetic neutral particle beams are produced, in accordance with one method, by directing a low energy ion beam through a gaseous medium under thick target conditions. In accordance with a second method, the low energy ions, i.e., below 10 KeV, are directed through a first selected gaseous medium at which resonance or near resonance charge exchange neutralization occurs and the neutral particles are then passed through a second gaseous medium in which the particles are excited to high n-quantum levels. In either case the excited state neutral particle can then be more easily ionized by the Lorentz force when they are introduced into a magnetic containment field to form a plasma therein. The second gaseous medium generally comprises a different gas than the first and is especially selected to produce the maximum portion of excited states.
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