| Project/Area Number |
09640354
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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 |
素粒子・核・宇宙線
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| Research Institution | Osaka University |
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Principal Investigator |
SAKABE Shuji Osaka University, Graduate School of Engineering, Research Associate, 工学研究科, 助教授 (50153903)
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| Co-Investigator(Kenkyū-buntansha) |
BAKASHIMA Nobuyuki Osaka City University, Faculty of Science, Professor, 理学部, 教授 (00106163)
IZAWA Yasukazu Osaka University, Institute of Laser Engineering, Professor, レーザー核融合研究センター, 教授 (10029316)
IIDA Toshiyuki Osaka University, Graduate School of Engineering, Professor, 工学研究科, 教授 (60115988)
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| Project Period (FY) |
1997 – 1998
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| Project Status |
Completed (Fiscal Year 1998)
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| Budget Amount *help |
¥2,600,000 (Direct Cost: ¥2,600,000)
Fiscal Year 1998: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1997: ¥2,100,000 (Direct Cost: ¥2,100,000)
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| Keywords | NEET / femtosecond lasers / TW lasers / laser produced plasmas / high-energy ions / フェトム秒レーザー |
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| Research Abstract |
The NEET phenomena in uranium with a ultra-short high-intensity pulse laser has been succesfully observed. Table-top TW Ti : sapphire laser system has been developed. The energetic ions (>1MeV) emitted from the plasmas produced by the short pulse TW laser was studied by using nuclear-track detecotrs. Energetic ions of higher than 10Mev were observed and the converging efficiency of the >MeV ions are 10e-10. The irradiarice of TW laser pulse on uranium yield the energetic ions and x-ray, which would be ionize innershell electons of the atom. Actually the uranium iraddiated by the TW laser emit electorn with the decay of about 30minutes, whicj is corresponding to the electron produced by the internal exchange in uranium.
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