Development of attosecond pulse radiolysis
| Project/Area Number |
26249146
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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 | Osaka University |
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Principal Investigator |
Yoshida Yoichi 大阪大学, 産業科学研究所, 教授 (50210729)
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| Co-Investigator(Kenkyū-buntansha) |
近藤 孝文 大阪大学, 産業科学研究所, 助教 (50336765)
菅 晃一 大阪大学, 産業科学研究所, 助教 (60553302)
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| Co-Investigator(Renkei-kenkyūsha) |
GOHDO Masao 大阪大学, 産業科学研究所, 特任研究員 (60705094)
OGATA Atsushi 大阪大学, 産業科学研究所, 特任研究員 (60023727)
SHIBATA Hiromi 大阪大学, 産業科学研究所, 特任研究員(客員准教授) (30216014)
KOBAYOSHI Hitoshi 大阪大学, 産業科学研究所, 特任研究員(客員教授) (80133099)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥41,730,000 (Direct Cost: ¥32,100,000、Indirect Cost: ¥9,630,000)
Fiscal Year 2016: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
Fiscal Year 2015: ¥12,740,000 (Direct Cost: ¥9,800,000、Indirect Cost: ¥2,940,000)
Fiscal Year 2014: ¥21,060,000 (Direct Cost: ¥16,200,000、Indirect Cost: ¥4,860,000)
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| Keywords | 放射線工学・ビーム科学 / パルスラジオリシス / 放射線化学 / 量子ビーム産業応用 / 放射線工学 / ビーム科学 / アト秒 / ナノファブリケーション / 時間分解吸収分光 / 量子ビーム初期過程 / 超短パルス電子線 |
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| Outline of Final Research Achievements |
By constructing a broadband THz Michelson interferometer, pulse width of electron beam can be measured to the attosecond. It was successfully generated an electron beam pulse of 8.7 fs with good reproducibility. As a result of construction of a double decker THz pulse radiolysis system, carrier density of quasi - free electrons in Si could be observed. And then we have extended the measurement wavelength of pulse radiolysis and found that an excited radical cation is directly related in radiolysis of dodecane. In ethanol, pre - solvation electrons were observed in the near infrared region, and it was found from the time constant that cleavage of hydrogen bond was related to pre - solvation electron formation. Radiation decomposition and protection effect of polystyrene was studied, by observing formation of dimer radical cation and excimer, and branching ratio of reaction was estimated.
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Report
(4 results)
Research Products
(147 results)
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[Journal Article] Femtosecond pulse radiolysis2016
Author(s)
T. Kondoh, J. Yang, K. Kan, M. Gohdo, H. Shibata, Y. Yoshida
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Journal Title
Electron. Comm. Jpn.
Volume: 99, No. 7
Issue: 7
Pages: 25-31
DOI
NAID
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Measurement of <20 fs bunch length using coherent transition radiation2014
Author(s)
I. Nozawa, K. Kan, J. Yang, A. Ogata, T. Kondoh, M. Gohdo, K. Norizawa, H. Kobayashi, H. Shibata, S. Gonda, and Y. Yoshida
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Journal Title
Phys. Rev. ST Accel. Beams
Volume: 17
Issue: 7
Pages: 072803-072803
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Femtosecond Pulse Radiolysis2014
Author(s)
近藤孝文,楊金峰,菅晃一,神戸正雄,柴田裕実,吉田陽一
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Journal Title
IEEJ Transactions on Electronics, Information and Systems
Volume: 134
Issue: 5
Pages: 664-669
DOI
NAID
ISSN
0385-4221, 1348-8155
Related Report
Peer Reviewed / Open Access
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[Presentation] Measurement of Coherent Transition Radiation from Electron Beam Using Large-apeture Photoconductive Antenna2015
Author(s)
K. Kan, J. Yang, A. Ogata, M. Gohdo, T. Kondoh, S. Sakakihara, I. Nozawa, K. Norizawa, T. Toigawa, H. Shibata, S. Gonda, and Y. Yoshida
Organizer
The 40th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2015)
Place of Presentation
Hong Kong, China
Year and Date
2015-08-26
Related Report
Int'l Joint Research
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[Presentation] Simulation study on electron beam acceleration using coherent Cherenkov radiation2014
Author(s)
K. Kan, J. Yang, A. Ogata, T. Kondoh, M. Gohdo, I. Nozawa, T. Toigawa, K. Norizawa, Y. Yoshida, M. Hangyo, R. Kuroda, H. Toyokawa
Organizer
the 5th International Particle Accelerator Conference (IPAC’14)
Place of Presentation
Dresden, Germany
Year and Date
2014-06-17
Related Report
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[Presentation] Pulse radiolysis using terahertz pulse2014
Author(s)
K. Kan, J. Yang, A. Ogata, T. Kondoh, M. Gohdo, I. Nozawa, T. Toigawa, K. Norizawa, H. Kobayashi, Y. Yoshida
Organizer
Advanced Lasers and Their Applications (ALTA) 2014
Place of Presentation
Jeju, Korea
Year and Date
2014-05-08
Related Report
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