| 摘要 |
The present invention mainly relates to an ion accelerator with significantly simplified construction, for accelerating an much larger amount of ions, wherein that a plasma-generating target 12, a vacuum chamber 16 for extracting ions from plasma generated from the plasma-generating target 12, and an ion linac 30 are connected in series, the vacuum chamber 16 is installed near an ion entrance of the ion linac 30, the ion accelerator also has a high voltage power supply boosting the vacuum chamber 16 to a desired voltage, and ions are directly injected from the vacuum chamber 16 to the ion linac 30. In addition, so as to improve the above-described ion accelerator 20, to greatly simplifying construction, to efficiently extracting all the ions included in accelerable plasma that is generated, and to be able to accelerate an ion beam with large pulse width, an ion accelerator has the construction that a plasma-generating target 112 for generating plasma by radiating a plasma generating laser L, a vacuum chamber 116 that extracts ions from plasma generated in the plasma-generating target 112 and is directly installed in an ion entrance 138 of an ionic linac 130, and an ion linac 130 are serially connected so that ions may be directly injected into the ion linac 130 by using the diffusion velocity of the plasma.
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