| Project/Area Number |
07680540
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Nuclear fusion studies
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| Research Institution | Gifu University |
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Principal Investigator |
SAKAGAMI Yukio Gifu University, Faculty of Engineering, Professor, 工学部, 教授 (90043463)
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| Co-Investigator(Kenkyū-buntansha) |
YOSHIDA Hiroki Gifu University, Faculty of Engineering, Research Assistant, 工学部, 助手 (90230755)
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| Project Period (FY) |
1995 – 1997
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| Project Status |
Completed (Fiscal Year 1997)
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| Budget Amount *help |
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1997: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1996: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1995: ¥1,500,000 (Direct Cost: ¥1,500,000)
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| Keywords | Laser fusion / Magnetic suspension / Electrodynamic levitation / Uniform implosion / Pellet fabrication / Pellet characterization / 電界懸架 |
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| Research Abstract |
1. Magnetic suspension of a pellet
(1) An active damper using optical force has been developed to damp horizontal vibration of a pellet. By analysis of the optical force, we found it is the resultant of radiometric force and photon force in the pressure range from 10^<-3> to 10^5 Pa. The decay time constant of horizontal vibration was effectively decreased down to 1/10.
2. Fabrication and characterization of the pellet
(1) Metal coat is necessary to fabricate a multi-layred pellet. By using of laser-ablation-coat, we obtained a prospect of low temperature Ni coating uniformly for plastic microballoon.
(2) By the application of electrodynamic levitation, the mass of a pellet was determined within 0.2 mug error.
(3) A spectrophotometry for determining metal thickness of a laser-fusion pellet is applied. The technique enabled one to determine Ni-coat-thickness within 5% error.
3. Electrodynamic levitation of the pellet
(1) For laser irradiation, rig electrodes were newly developed. We could extremely enlarge laser irradiation solid angle up to 85 % from 25%.
4. Uniform implosion
(1) By the combination of these research results, we could have a prospect of complete removal of low mode implosion-nonuniformity.
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