| Project/Area Number |
13308025
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Nuclear engineering
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| Research Institution | The University of Tokyo |
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Principal Investigator |
HASEGAWA Shuichi (2003) The University of Tokyo, School of Engineering, Associate Professor, 大学院・工学系研究科, 助教授 (90262047)
鈴木 篤之 (2001-2002) 東京大学, 大学院・工学系研究科, 教授 (50011135)
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| Co-Investigator(Kenkyū-buntansha) |
TSUSHIMA Satoru Nagoya University, School of Engineering, Associate Professor, 大学院・工学研究科, 助教授 (80312990)
TODORIKI Masaru The University of Tokyo, School of Engineering, Research Associate, 大学院・工学系研究科, 助手 (10270886)
NAGASAKI Shinya The University of Tokyo, Graduate School of Frontier Science, Associate Professor, 大学院・新領域創成科学研究科, 助教授 (20240723)
長谷川 秀一 東京大学, 大学院・工学系研究科, 助教授 (90262047)
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| Project Period (FY) |
2001 – 2003
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| Project Status |
Completed (Fiscal Year 2003)
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| Budget Amount *help |
¥37,310,000 (Direct Cost: ¥28,700,000、Indirect Cost: ¥8,610,000)
Fiscal Year 2003: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
Fiscal Year 2002: ¥12,740,000 (Direct Cost: ¥9,800,000、Indirect Cost: ¥2,940,000)
Fiscal Year 2001: ¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
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| Keywords | laser / isotope analysis / radioactive waste / 微量分析 |
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| Research Abstract |
We have proposed the novel method of analyses on radioactive waste by means of laser and developed the apparatus to achieve the methodology. The following apparatus are developed. (1) The quadruple linear ion trap is developed. The ions that is generated by pulsed laser ablation are successfully trapped. (2) It is necessary to irradiate 397nm ultraviolet cw laser light to cool the ions. The bow-tie cavity with nonlinear crystal outside the laser was designed and developed. The stable ultraviolet light with enough power is obtained. (3) The wavelength, 866nm of the repumping laser (diode laser system) was stabilized with two methods, which used the modulation of the grating and the etalon, respectively. The better stabilization was performed with the modulation of the etalon. (4) Galvano spectroscopy was performed to obtain the absolute wavelengths of the resonance. The wavelengths of each laser system was controlled and obtained the resonance wavelengths. (5) The total system was built to perform laser cooling and the laser induced fluorescence was observed. With more efficient detection system, the laser cooling and single ion detection would be possible.
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