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Journal Articles

Characterization of preformed plasmas using a multi-dimensional hydrodynamic simulation code in the study of high-intensity laser-plasma interactions

Sagisaka, Akito; Utsumi, Takayuki*; Daido, Hiroyuki; Ogura, Koichi; Orimo, Satoshi; Takai, Mamiko; Hayashi, Yukio; Mori, Michiaki; Yogo, Akifumi; Kado, Masataka; et al.

Journal of Plasma Physics, 72(6), p.1281 - 1284, 2006/12

 Times Cited Count:0 Percentile:0.01(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Development of a two-color interferometer for observing wide range electron density profiles with a femtosecond time resolution

Sagisaka, Akito; Pirozhkov, A. S.; Daido, Hiroyuki; Fukumi, Atsushi*; Li, Z.*; Ogura, Koichi; Yogo, Akifumi; Oishi, Yuji*; Nayuki, Takuya*; Fujii, Takashi*; et al.

Applied Physics B, 84(3), p.415 - 419, 2006/09

 Times Cited Count:20 Percentile:65.94(Optics)

no abstracts in English

Journal Articles

New detection device for Thomson parabola spectrometer for diagnosis of the laser-plasma ion beam

Mori, Michiaki; Kando, Masaki; Pirozhkov, A. S.; Hayashi, Yukio; Yogo, Akifumi; Yoshimura, Norihisa; Ogura, Koichi; Takai, Mamiko; Sagisaka, Akito; Orimo, Satoshi; et al.

Plasma and Fusion Research (Internet), 1(9), p.042_1 - 042_4, 2006/09

A new detection device for evaluating ion energy distributions for laser-plasma ion source is demonstrated. The Imaging Plate (IP) with no protective layer as ion detector device for the Thomson Parabola spectrometeris used. The Imaging Plate Thomson Parabola spectrometer (IPTPS) is applicable for the analysis of the energydistribution of the laser-driven ion beam using an opto-electric digitizing technique.

Journal Articles

Characterization of preformed plasmas using a hydrodynamic simulation code in the study of high-intensity laser-plasma interactions

Sagisaka, Akito; Utsumi, Takayuki*; Daido, Hiroyuki; Ogura, Koichi; Orimo, Satoshi; Hayashi, Yukio; Takai, Mamiko; Mori, Michiaki; Yogo, Akifumi; Kado, Masataka; et al.

Reza Enerugigaku Kenkyu Senta Heisei-17-Nendo Kyodo Kenkyu Seika Hokokusho (Heisei-17-Nen 4-Gatsu $$sim$$ Heisei-18-Nen 3-Gatsu), p.61 - 62, 2006/07

no abstracts in English

Journal Articles

Characterization of a laser-driven proton beam

Sagisaka, Akito; Daido, Hiroyuki; Fukumi, Atsushi*; Takai, Mamiko; Yogo, Akifumi; Li, Z.*; Ogura, Koichi; Orimo, Satoshi; Hayashi, Yukio; Mori, Michiaki; et al.

Proceedings of RCNP-JAEA Workshop on Nuclear Photon Science "Hadron-nuclear physics probed by photon", p.195 - 200, 2006/00

High energy ions, electrons, and X-ray are generated from ultrashort pulse high-intensity laser-matter interactions. High-energy protons are observed with a thin-foil target irradiated with a high intensity Ti:sapphire laser at the peak intensity of $$sim$$2.7$$times$$10$$^{18}$$ W/cm$$^{2}$$. The maximum proton energy is $$sim$$900 keV.

Journal Articles

Laser polarization dependence of proton emission from a thin foil target irradiated by a 70 fs, intense laser pulse

Fukumi, Atsushi*; Takai, Mamiko; Daido, Hiroyuki; Li, Z.*; Sagisaka, Akito; Ogura, Koichi; Orimo, Satoshi; Kado, Masataka; Hayashi, Yukio; Mori, Michiaki; et al.

Physics of Plasmas, 12(10), p.100701_1 - 100701_4, 2005/10

 Times Cited Count:44 Percentile:80.31(Physics, Fluids & Plasmas)

A study of proton emission from a 3-$$mu$$m thick Ta foil target irradiated by$$p$$-, $$s$$- and circularly polarized laser pulses with respect to the targetplane has been carried out. Protons with energies up to 880 keV were observed in the target normaldirection under the irradiation by the $$p$$-polarized laser pulse, which yieldedthe highest efficiency for proton emission. In contrast, $$s$$- and circularlypolarized laser pulses gave the maximum energies of 610 keV and 680 keV,respectively. The difference in the maximum energy between the $$p$$- and$$s$$-polarized cases was associated with the difference between thesheath fields estimated from electron spectra.

Oral presentation

Proton generation from a metal thin foil irradiated with a high intensity ultra-short pulse laser

Sagisaka, Akito; Yogo, Akifumi; Daido, Hiroyuki; Fukumi, Atsushi*; Li, Z.*; Ogura, Koichi; Takai, Mamiko; Orimo, Satoshi; Hayashi, Yukio; Mori, Michiaki; et al.

no journal, , 

no abstracts in English

Oral presentation

Proton generation with a high intensity ultra-short pulse laser 1; Preformed plasma dependence

Sagisaka, Akito; Nakamura, Shu; Mori, Michiaki; Daido, Hiroyuki; Fukumi, Atsushi*; Ogura, Koichi; Orimo, Satoshi; Hayashi, Yukio; Takai, Mamiko; Yogo, Akifumi; et al.

no journal, , 

no abstracts in English

Oral presentation

JLITE-X multi-TW laser system and its applications

Mori, Michiaki; Ogura, Koichi; Sagisaka, Akito; Kando, Masaki; Hayashi, Yukio; Daito, Izuru; Fukumi, Atsushi*; Yogo, Akifumi; Takai, Mamiko; Orimo, Satoshi; et al.

no journal, , 

The multi-TW laser system "JLITE-X (JAEA Laser system for laser-matter InTeraction Experiment)" was developed for studying on the laser-matter interaction in sub-relativistic regime. Two quasi-monoenergetic charged particle production experiments were conducted after laser system development. The first, we successfully generated quasi-monoenergetic proton beam by using phase rotator which based on the radio-frequency accelerator technique. The quasi-monoenergetic component was observed near 600 keV with 1 TW / 220 fs laser operation mode. The second, we also successfully generated quasi-monoenergetic electron beam with energy of 20 MeV in self-modulated laser-wakefield regime with 3 TW / 70 fs operation mode. These results were indicated that the multi-TW laser is useful for not only plasma physics research but also high-energy particle source and its applications.

Oral presentation

Optimization of the target parameter for the phase rotation experiment by using proton beam driven by 100-TW class Ti:Sa laser

Mori, Michiaki; Ogura, Koichi; Sagisaka, Akito; Orimo, Satoshi; Takai, Mamiko; Yogo, Akifumi; Kiriyama, Hiromitsu; Ma, J.-L.; Kanazawa, Shuhei; Kondo, Shuji; et al.

no journal, , 

no abstracts in English

Oral presentation

Online observation of proton energy distributions in a high-intensity ultrashort laser-foil interaction

Yogo, Akifumi; Ogura, Koichi; Orimo, Satoshi; Sagisaka, Akito; Takai, Mamiko; Mori, Michiaki; Pirozhkov, A. S.; Daido, Hiroyuki; Nakamura, Shu*; Shirai, Toshiyuki*; et al.

no journal, , 

no abstracts in English

Oral presentation

Repititive highly collimated intense proton beam in the sub-MeV energy range produced by a compact tera-Watt femto-second laser

Takai, Mamiko; Daido, Hiroyuki; Sagisaka, Akito; Ogura, Koichi; Orimo, Satoshi; Kado, Masataka; Yogo, Akifumi; Mori, Michiaki; Hayashi, Yukio; Bulanov, S. V.; et al.

no journal, , 

We obtain a highly collimated sub-MeV proton beam with divergence angle of 10 degrees during the interaction of a few terawatt table-top Titanium Sapphaire laser pulse with a thin-metalic foil. By using the proton beam, we obtain a good quality projection imaging of a micrometer size mesh structure. The quantitative characterization of the beam is carried out. The transverse emittance of the beam is obtained to be less than 0.1 $$pi$$ mm mrad.

Oral presentation

High energy proton generation with thin-foil targets

Sagisaka, Akito; Daido, Hiroyuki; Yogo, Akifumi; Ogura, Koichi; Orimo, Satoshi; Ma, J.-L.; Mori, Michiaki; Pirozhkov, A. S.; Takai, Mamiko; Oishi, Yuji*; et al.

no journal, , 

no abstracts in English

13 (Records 1-13 displayed on this page)
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