| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2015: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2014: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
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| Outline of Final Research Achievements |
An ion generation experiment was performed using a pulse laser to apply higher charge state ion beams for the Direct Plasma Injection Scheme. To generate higher charge state ions, we irradiated an iron target using a Nd:YAG laser pulse of several hundred picoseconds. We found that higher charge state iron ions (up to Fe21+) were obtained using a laser pulse of several picoseconds in comparison to those obtained using a laser pulse of several nanoseconds (up to Fe19+). By irradiating the same spot and analyzing the produced plasmas (1st and 2nd), we determined that when the laser irradiation area was relatively large, the laser power was absorbed mainly by the contamination on the target surface. We believe that the removal of the contamination on the target surface is more important for targets outside of the focal point.
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