2004 Fiscal Year Final Research Report Summary
Study of laser ; ultra-high-density Relativistic field using new electron positron spectrometer
| Project/Area Number |
14390033
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
広領域
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| Research Institution | Osaka University |
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Principal Investigator |
TANAKA Kazuo Osaka University, Graduate School of Engineering, 工学研究科, 教授 (70171741)
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| Co-Investigator(Kenkyū-buntansha) |
KITAGAWA Yoneyoshi Osaka University, Graduate School of Engineering, 工学研究科, 助教授 (40093405)
KODAMA Ryosuke Osaka University, Graduate School of Engineering, 工学研究科, 助教授 (80211902)
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| Project Period (FY) |
2002 – 2004
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| Keywords | Hot electron / Ultra-intense laser / Relativistic Physics / Positron / Imaging plate / Fast ignition / Laser fusion |
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| Research Abstract |
The achievements of this research are summarized as below.
1.Positron/electron spectrometer development
2.Spectrometer calibration
3.Application of the spectrometer to ultra-intense laser experiment
4.Positron spectrum
5.Electron spectrum
6.Clarification of physics issues relevant to laser fusion new scheme : fast ignition
1.This spectrometer is robust and easy to use. The detection part uses an imaging plate (Fuji film Co.). The use of IP has made it possible to use the spectrometer reliably under extremely intense EM noise situation typically existing in ultra-intense laser plasma experiments.
2.The IP was calibrated using cyclotron accelerator. The details are published in our paper list : K.A.Tanaka et al., Rev.Sci.Instr., 2004. Because of this accurate calibration, the use of the spectrometer became very versatile. The spectrometers were brought in ultra-intense laser experiments at the Rutherford Appleton Labo. (UK) and produced many electron spectral data. RAL decided to use the spectrometers as a standard diagnostics as well as the Oxford University. The spectrometer will be also approved to be a standard diagnostics at the Institute of Laser Fusion in China.
3.The spectrometers were used in many relativistic laser plasma experiments and produced accurate data.
4.In the ultra-intense laser experiments, focused laser light accelerates electrons and gamma rays resulting in producing positrons. The spectrometer detected positron spectrum as shown in our paper list : K.A.Tanaka et al., Phys.Plasmas, 2004.
5.Electron spectrum was copiously taken in many ultra-intense laser plasma experiments.
6.These electron spectral data contributed to many relativistic physics, fast ignition and high energy density science experiments.
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[Journal Article] Integrated implosion/heating studies for advanced fast ignition2004
Author(s)
P.A.Norreys, K.L.Lancaster, C.D.Murphy, H.Habara, S.Karsch, R.J.Clarke, J.Collier, R.Heathcote, C.Hemandez-Gomez, S.Hawkes, D.Neely, M.H.R.Hutchinson, R.G.Evans, M.Borghesi, L.Romagnani, M.Zepf, K.Akli, J.A.King, B.Zhang, R.H.Freeman, A.J.MacKinnon, S.P.Hatchett, P.Patel, R.Snavely, M.H.Key, A.Nikroo, R.Stephens, C.Stoeckl, K.A.Tanaka, T.Norimatsu, Y.Toyama, R.Kodama
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Journal Title
Physics of Plasmas Volume11, Number5
Pages: 2746-2753
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Characterization of GEKKO/HIPER-Driven Shock Waves for Equation-of-State Experiments in Ultra-High-Pressure Regime2004
Author(s)
OZAKI Norimasa, TANAKA Kazuo A., ONO Takatoshi, TAKAMATSU Kikuo, NAGAI Keiji, SHIGEMORI Keisuke, NAKAI Mitsuo, MIYANAGA Noriaki, AZECHI Hiroshi, YAMANAKA Tatsuhiko
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Journal Title
Journal of Plasma and Fusion Research Vol.80, No.6
Pages: 486-491
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Characterization of preplasma produced by an ultrahigh intensity laser system2004
Author(s)
K.Adumi, K.A.Tanaka, T.Matsuoka, T.Kurahashi, T.Yabuuchi, Y.Kitagawa, R.Kodama, K.Sawai, K.Suzuki, K.Okabe, T.Sera, T.Norimatsu, Y.Izawa
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Journal Title
Physics of Plasmas Volume11, Number8
Pages: 3721-3725
Description
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[Journal Article] Experimental Technique for Launching miniature flying plates using laser pulses2003
Author(s)
K.Okada, K.Wakabayashi, H.Takenaka, H.Nagao, K.Kondo, T.Ono, K.Takamatsu, N.Ozaki, K.Nagai, M.Nakai, K.A.Tanaka, M.Yoshida
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Journal Title
Int.Jour.Impact Eng. 29
Pages: 497
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Basic and Integrated studies for fast ignition2003
Author(s)
K.A.Tanaka, R.Kodama, K.Mima, Y.Kitagawa, H.Fujita, N.Miyanaga, K.Nagai, T.Norimatsu, T.Sato, Y.Sentoku, K.Shigemori, A.Sunahara, T.Shozaki, M.Tanpo, S.Tohyama, T.Yabuuchi, J.Zheng, T.Yamanaka
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Journal Title
Physics of Plasmas Vol.10, No.5, Part2
Pages: 1925-1930
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Equation-of-state measurements of polyimide at pressures up to 5.8 TPa using low-density foam with laser-driven shock waves2003
Author(s)
K.Takamatsu, N.Ozaki, K.A.Tanaka, T.Ono, K.Nagai, M.Nakai, T.Watari, A.Sunahara, M.Nakano, T.Kataoka, H.Takenaka, M.Yoshida, K.Kondo, T.Yamanaka
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Journal Title
Physical Review E 67
Pages: 056406-1-056406-5
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Hugoniot measurements for polyimide with laser and explosives2003
Author(s)
N.Ozaki, K.A.Tanaka, Y.Sasatani, K.Fujita, K.Takamatsu, M.Nakan, M.Yashida, K.Okada, E.Takahashi, Y.Owadano, H.Takenaka, K.Kondo
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Journal Title
Phys.Plasmas 10
Pages: 2475
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Observation of neutron spectrum produced by fast deuterons via ultraintense laser plasma interactions2002
Author(s)
N.Izumi, Y.Sentoku, H.Habara, K.Takahashi, F.Ohtani, T.Sonomoto, R.Kodama, T.Norimatsu, H.Fujita, Y.Kitagawa, K.Mima, K.A.Tanaka, T.Yamanaka
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Journal Title
Physical Review E Volume65
Pages: 036413-1-036413-10
Description
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[Journal Article] Fast heating scalable to laser fusion ignition2002
Author(s)
R.Kodama, H.Shiraga, K.Shigemori, Y.Toyama, S.Fujioka, H.Azechi, H.Fujita, H.Habara, T.Hall, Y.Izawa, T.Jitsuno, Y.Kitagawa, K.M.Krushelnics, K.L.Lancaster, K.Mima, K.Nagai, M.Nakai, H.Nishimura, T.Norimatsu, P.A.Norreys, S.Sakabe, K.A.Tanaka, A.Youssef, M.Zepf, T.Yamanaka
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Journal Title
Nature Vol418
Pages: 933-934
Description
「研究成果報告書概要(欧文)」より
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