| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Outline of Final Research Achievements |
The main objective of this research is the development of the ion-engine using the reflected-type negative ion source. The experiments were performed in our previously-developed RF ion source and the extraction of the negative ion beam from the source was tested. The acceleration electrodes consist of a molybdenum plasma grid, cupper extraction and acceleration grids. The extraction and acceleration voltage can be applied to 10 kV and 20 kV, respectively. The results show that the ratio of the negative ion in the extracted beam can be changed by the extraction voltage and it reaches about 10%. In addition, the arrangement of the cusp magnetic field around the source improves the performance of the negative ion source.
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