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27 results on '"Mori, M"'

1. Laser Wakefield Accelerated Electron Beam Monitoring and Control.

Author

Koga, J. K., Mori, M., Kotaki, H., Bulanov, S. V., Esirkepov, T. Zh., Kiriyama, H., and Kando, M.

Subjects
*ELECTRON beam research, *LASER plasma accelerators, *ELECTRON accelerators, *UNDULATOR radiation, *LASERS
Abstract

We will discuss our participation in the ImPACT project, which has as one of its goals the development of an ultra-compact electron accelerator using lasers (< 1 GeV, < 10 m) and the generation of an x-ray beam from the accelerated electrons. Within this context we will discuss our investigation into electron beam monitoring and control. Since laser accelerated electrons will be used for x-ray beam generation combined with an undulator, we will present investigation into the possibilities of the improvement of electron beam emittance through cooling. [ABSTRACT FROM AUTHOR]

Published
2016
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2. X-ray emission from relativistically moving electron density cusps

Author

Kando, M., primary, Pirozhkov, A. S., additional, Nakamura, T., additional, Hayashi, Y., additional, Kotaki, H., additional, Kawase, K., additional, Esirkepov, T. Zh., additional, Fukuda, Y., additional, Kiriyama, H., additional, Okada, H., additional, Daito, I., additional, Kameshima, T., additional, Mori, M., additional, Koga, J. K., additional, Daido, H., additional, Faenov, A. Ya., additional, Pikuz, T., additional, Ma, J., additional, Chen, L.-M., additional, Ragozin, E. N., additional, Kawachi, T., additional, Kato, Y., additional, Tajima, T., additional, and Bulanov, S. V., additional

Published
2012
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3. Radiobiological study by using laser-driven proton beams

Author

Yogo, A., primary, Sato, K., additional, Nishikino, M., additional, Mori, M., additional, Teshima, T., additional, Numasaki, H., additional, Murakami, M., additional, Demizu, Y., additional, Akagi, S., additional, Nagayama, S., additional, Ogura, K., additional, Sagisaka, A., additional, Orimo, S., additional, Nishiuchi, M., additional, Pirozhkov, A. S., additional, Ikegami, M., additional, Tampo, M., additional, Sakaki, H., additional, Suzuki, M., additional, Daito, I., additional, Oishi, Y., additional, Sugiyama, H., additional, Kiriyama, H., additional, Okada, H., additional, Kanazawa, S., additional, Kondo, S., additional, Shimomura, T., additional, Nakai, Y., additional, Tanoue, M., additional, Sasao, H., additional, Wakai, D., additional, Kawachi, T., additional, Nishimura, H., additional, Bolton, P. R., additional, Daido, H., additional, Bolton, Paul R., additional, Daido, Hiroyuki, additional, and Bulanov, Sergei V., additional

Published
2009
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4. On-Target Contrast Diagnostic via Specular Reflectivity Measurement

Author

Pirozhkov, A. S., primary, Choi, I. W., additional, Sung, J. H., additional, Lee, S. K., additional, Yu, T. J., additional, Jeong, T. M., additional, Kim, I. J., additional, Hafz, N., additional, Kim, C. M., additional, Pae, K. H., additional, Noh, Y.-C., additional, Ko, D.-K., additional, Lee, J., additional, Robinson, A., additional, Foster, P., additional, Hawkes, S., additional, Streeter, M., additional, Spindloe, C., additional, McKenna, P., additional, Carroll, D. C., additional, Wahlström, C.-G., additional, Zepf, M., additional, Dromey, B., additional, Markey, K., additional, Kar, S., additional, Li, Y. T., additional, Xu, M. H., additional, Nagatomo, H., additional, Mori, M., additional, Yogo, A., additional, Kiriyama, H., additional, Ogura, K., additional, Sagisaka, A., additional, Orimo, S., additional, Nishiuchi, M., additional, Sugiyama, H., additional, Esirkepov, T. Zh., additional, Okada, H., additional, Kondo, S., additional, Kanazawa, S., additional, Nakai, Y., additional, Akutsu, A., additional, Motomura, T., additional, Tanoue, M., additional, Shimomura, T., additional, Ikegami, M., additional, Daito, I., additional, Kando, M., additional, Kameshima, T., additional, Bolton, P., additional, Bulanov, S. V., additional, Daido, H., additional, Neely, D., additional, Bolton, Paul R., additional, Daido, Hiroyuki, additional, and Bulanov, Sergei V., additional

Published
2009
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5. Ion acceleration in the interaction of short pulse laser radiation with the cluster-gas target

Author

Fukuda, Y., primary, Faenov, A. Ya., additional, Tampo, M., additional, Pikuz, T. A., additional, Nakamura, T., additional, Kando, M., additional, Hayashi, Y., additional, Yogo, A., additional, Sakaki, H., additional, Kameshima, T., additional, Pirozhkov, A. S., additional, Ogura, K., additional, Mori, M., additional, Esirkepov, T. Zh., additional, Boldarev, A. S., additional, Gasilov, V. A., additional, Magunov, A. I., additional, Kodama, R., additional, Bolton, P. R., additional, Kato, Y., additional, Tajima, T., additional, Daido, H., additional, Bulanov, S. V., additional, Bolton, Paul R., additional, Daido, Hiroyuki, additional, and Bulanov, Sergei V., additional

Published
2009
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6. Femtosecond-Laser-Driven Cluster-Based Plasma Source for High-Resolution Ionography

Author

Faenov, A. Ya., primary, Pikuz, T. A., additional, Fukuda, Y., additional, Kando, M., additional, Kotaki, H., additional, Homma, T., additional, Kawase, K., additional, Kameshima, T., additional, Pirozhkov, A., additional, Yogo, A., additional, Tampo, M., additional, Mori, M., additional, Sakaki, H., additional, Hayashi, Y., additional, Nakamura, T., additional, Pikuz, S. A., additional, Kartashev, V., additional, Skobelev, I. Yu., additional, Gasilov, S. V., additional, Giulietti, A., additional, Cecchetti, C. A., additional, Boldarev, A. S., additional, Gasilov, V. A., additional, Magunov, A., additional, Kar, S., additional, Borghesi, M., additional, Bolton, P., additional, Daido, H., additional, Tajima, T., additional, Kato, Y., additional, Bulanov, S. V., additional, Bolton, Paul R., additional, Daido, Hiroyuki, additional, and Bulanov, Sergei V., additional

Published
2009
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7. Laser driven proton beam for the applications: toward ultra-high intensity & short pulse proton beam

Author

Nishiuchi, M., primary, Daido, H., additional, Daito, I., additional, Ikegami, M., additional, Mori, M., additional, Orimo, S., additional, Ogura, K., additional, Sagisaka, A., additional, Yogo, A., additional, Pirozhkov, A. S., additional, Sugiyama, H., additional, Kiriyama, H., additional, Okada, H., additional, Kanazawa, S., additional, Kondo, S., additional, Shimomura, T., additional, Tanoue, M., additional, Nakai, Y., additional, Sasao, H., additional, Wakai, D., additional, Sakaki, H., additional, Hori, T., additional, Bolton, P., additional, Choi, I. W., additional, Sung, J. H., additional, Lee, J., additional, Oishi, Y., additional, Fujii, T., additional, Nemoto, K., additional, Souda, H., additional, Noda, A., additional, Iseki, Y., additional, Yoshiyuki, T., additional, Bolton, Paul R., additional, Daido, Hiroyuki, additional, and Bulanov, Sergei V., additional

Published
2009
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8. MeV quasi-mono-energetic proton beam created by a combination of a laser-plasma ion accelerator and synchronous rf cavity

Author

Ikegami, M., primary, Nakamura, S., additional, Iwashita, Y., additional, Shirai, T., additional, Souda, H., additional, Tajima, Y., additional, Tanabe, M., additional, Tongu, H., additional, Itoh, H., additional, Shintaku, H., additional, Yamazaki, A., additional, Daido, H., additional, Yogo, A., additional, Orimo, S., additional, Mori, M., additional, Nishiuchi, M., additional, Ogura, K., additional, Pirozhkov, A., additional, Ma, J., additional, Kiriyama, H., additional, Kanazawa, S., additional, Sagisaka, A., additional, Kondo, S., additional, Yamamoto, Y., additional, Shimomura, T., additional, Tanoue, M., additional, Nakai, Y., additional, Akutsu, A., additional, Bulanov, S. V., additional, Kimura, T., additional, Oishi, Y., additional, Nemoto, K., additional, Tajima, T., additional, Noda, A., additional, and Bulanov, Sergei V., additional

Published
2008
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9. Relativistic Tennis Using Flying Mirror

Author

Pirozhkov, A. S., primary, Kando, M., additional, Esirkepov, T. Zh., additional, Ma, J., additional, Fukuda, Y., additional, Chen, L.-M., additional, Daito, I., additional, Ogura, K., additional, Homma, T., additional, Hayashi, Y., additional, Kotaki, H., additional, Sagisaka, A., additional, Mori, M., additional, Koga, J. K., additional, Kawachi, T., additional, Daido, H., additional, Bulanov, S. V., additional, Kimura, T., additional, Kato, Y., additional, Tajima, T., additional, and Bulanov, Sergei V., additional

Published
2008
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10. Development of Laser-Driven Proton and Electron Sources Using APRI 100-TW Ti:Sapphire Laser System

Author

Choi, I. W., primary, Hafz, N., additional, Jeong, T. M., additional, Kim, H. T., additional, Kim, C. M., additional, Yu, T. J., additional, Sung, J. H., additional, Hong, K.-H., additional, Lee, S. K., additional, Noh, Y.-C., additional, Ko, D.-K., additional, Lee, J., additional, Orimo, S., additional, Yogo, A., additional, Sagisaka, A., additional, Ogura, K., additional, Mori, M., additional, Li, Z., additional, Ma, J., additional, Pirozhkov, A. S., additional, Bulanov, S. V., additional, Nishiuchi, M., additional, Daido, H., additional, Oishi, Y., additional, Nemoto, K., additional, Nakamura, S., additional, Iwashita, Y., additional, Shirai, T., additional, Noda, A., additional, and Bulanov, Sergei V., additional

Published
2008
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11. Laser ion acceleration by a near-critical density target

Author

Yogo, A., primary, Daido, H., additional, Bulanov, S. V., additional, Esirkepov, T. Zh., additional, Nemoto, K., additional, Oishi, Y., additional, Nayuki, T., additional, Fujii, T., additional, Ogura, K., additional, Orimo, S., additional, Sagisaka, A., additional, Ma, J.-L., additional, Mori, M., additional, Nishiuchi, M., additional, Pirozhkov, A. S., additional, Nakamura, S., additional, Noda, A., additional, Nagatomo, H., additional, and Bulanov, Sergei V., additional

Published
2008
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12. Femtosecond laser driven high-flux highly collimated MeV-proton beam

Author

Nishiuchi, M., primary, Daido, H., additional, Yogo, A., additional, Orimo, S., additional, Ogura, K., additional, Ma, J., additional, Sagisaka, A., additional, Mori, M., additional, Pirozhkov, A. S., additional, Kiriyama, H., additional, Bulanov, S. V., additional, Esirkepov, T. Zh., additional, Choi, Il Woo, additional, Yu, Tae Jun, additional, Shung, Jae Hee, additional, Jeong, Tae Moon, additional, Kim, Hyung Taek, additional, Hong, Kyung-Ham, additional, Noh, Young-Chul, additional, Ko, Do-Kyeong, additional, Lee, Jongmin, additional, Oishi, Y., additional, Nemoto, K., additional, Nagatomo, H., additional, Nagai, K., additional, and Bulanov, Sergei V., additional

Published
2008
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14. High-order harmonics from bow wave caustics driven by a high-intensity laser.

Author

Esirkepov, T. Zh., Pirozhkov, A. S., Kando, M., Gallegos, P., Ahmed, H., Ragozin, E. N., Faenov, A. Ya., Pikuz, T. A., Kawachi, T., Sagisaka, A., Koga, J. K., Coury, M., Green, J., Foster, P., Brenner, C., Dromey, B., Symes, D. R., Mori, M., Kawase, K., and Kameshima, T.

Subjects
SECOND harmonic generation, CAUSTICS (Optics), LASER pulses, ELECTRON distribution, COMPUTER simulation, NUCLEAR collective models, PLASMA density
Abstract

We propose a new mechanism of high-order harmonic generation during an interaction of a high-intensity laser pulse with underdense plasma. A tightly focused laser pulse creates a cavity in plasma pushing electrons aside and exciting the wake wave and the bow wave. At the joint of the cavity wall and the bow wave boundary, an annular spike of electron density is formed. This spike surrounds the cavity and moves together with the laser pulse. Collective motion of electrons in the spike driven by the laser field generates high-order harmonics. A strong localization of the electron spike, its robustness to oscillations imposed by the laser field and, consequently, its ability to produce high-order harmonics is explained by catastrophe theory. The proposed mechanism explains the experimental observations of high-order harmonics with the 9 TW J-KAREN laser (JAEA, Japan) and the 120 TW Astra Gemini laser (CLF RAL, UK) [A. S. Pirozhkov, et al., arXiv:1004.4514 (2010); A. S. Pirozhkov et al, AIP Proceedings, this volume]. The theory is corroborated by high-resolution two-and three-dimensional particle-in-cell simulations. [ABSTRACT FROM AUTHOR]

Published
2012
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15. Relativistic high harmonic generation in gas jet targets.

Author

Pirozhkov, A. S., Kando, M., Esirkepov, T. Zh., Gallegos, P., Ahmed, H., Ragozin, E. N., Faenov, A. Ya., Pikuz, T. A., Kawachi, T., Sagisaka, A., Koga, J. K., Coury, M., Green, J., Foster, P., Brenner, C., Dromey, B., Symes, D. R., Mori, M., Kawase, K., and Kameshima, T.

Subjects
RELATIVITY (Physics), SECOND harmonic generation, LASER beam polarization, JETS (Fluid dynamics), LASER pulses, ELECTRON distribution, PHOTON beams, LASER plasmas, NONLINEAR oscillations
Abstract

We experimentally demonstrate a new regime of high-order harmonic generation by relativistic-irradiance lasers in gas jet targets. Bright harmonics with both odd and even orders, generated by linearly as well as circularly polarized pulses, are emitted in the forward direction, while the base harmonic frequency is downshifted. A 9 TW laser generates harmonics up to 360 eV, within the 'water window' spectral region. With a 120 TW laser producing 40 uJ/sr per harmonic at 120 eV, we demonstrate the photon number scalability. The observed harmonics cannot be explained by previously suggested scenarios. A novel high-order harmonics generation mechanism [T. Zh. Esirkepov et al., AIP Proceedings, this volume], which explains our experimental findings, is based on the phenomena inherent in the relativistic laser - underdense plasma interactions (self-focusing, cavity evacuation, and bow wave generation), mathematical catastrophe theory which explains formation of electron density singularities (cusps), and collective radiation due to nonlinear oscillations of a compact charge. [ABSTRACT FROM AUTHOR]

Published
2012
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16. Development of Laser-Driven Ion Source.

Author

Daido, H., Nishiuchi, M., Fukumi, A., Li, Z., Sagisaka, A., Ogura, K., Orimo, S., Kado, M., Hayashi, Y., Mori, M., Nagashima, A., Pirozhkov, A., Bulanov, S., Esirkepov, T., Kimura, T., Tajima, T., Nemoto, K., Oishi, Y., Nayuki, T., and Fujii, T.

Subjects
SECONDARY ion emission, POLARIZATION (Nuclear physics), ION accelerators, PHYSICS, PARABOLA, PROTONS
Abstract

We have studied the ion emission from a thin-foil target irradiated by p, s and circularly polarized laser pulses in order to clarify the mechanism of ion acceleration using a Titanium Sapphire laser with a peak irradiance of 3 × 1018 W/cm2. A tape target driver provided a fresh surface of a tantalum foil with the thickness of 3 micro-meters during the measurements. The laser polarization was changed from p to s- and to circular polarization by using the 1/2 and 1/4 wave plates made of mica. To obtain the ion energy spectra and to resolve the ion species, a Thomson parabola ion analyzer was placed behind the target along the target normal direction. The energy spectra close to 1MeV were obtained. Possible explanation of the experimental result is described. Finally, we describe the phase rotation technique to obtain a monochromatic proton beam. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR]

Published
2006
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17. Hot Electrons Emitted from a Thin Foil Target Irradiated by Ultrashort Intense Laser Pulses.

Author

Li, Z., Daido, H., Fukumi, A., Orimo, S., Sagisaka, A., Ogura, K., Oishi, Y., Nayuki, T., Nishiuchi, M., Hayashi, Y., Mori, M., Kado, M., Esirkepov, T. Zh., Bulanov, S. V., Nakamura, S., Noda, A., Fujii, T., and Nemoto, K.

Subjects
HOT carriers, ELECTRONS, EXPERIMENTAL design, TANTALUM, PROTONS, PHYSICS
Abstract

The experimental study on hot electrons emitted from a 3-μm thick tantalum foil irradiated by s- and p-polarized intense femtosecond laser pulses with a peak intensity of ∼1018 W/cm2 are reported here. Three hot electron flows are found along the rear target normal, specular and target surface directions. The characters of hot electrons are discussed and applied to explain the experimental results of bremsstrahlung X-rays and generation of protons. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR]

Published
2006
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18. Photoluminescence and Relaxation Processes in the Optically Excited States of Fluorinated Fullerenes.

Author

Akimoto, I., Mori, M., and Kan'no, K.

Subjects
*FULLERENES, *PHOTOLUMINESCENCE, *EXCITED state chemistry, *POLARONS, *ELECTRONS, *RELAXATION phenomena
Abstract

Origin of the photoluminescence and relaxation processes in the optically excited states of fluorinated fullerenes has been investigated by site selective excitation and time resolved spectroscopy. The intrinsic luminescence consists of at least two components with the different kind of decay kinetics. One of which is of single exponential with τd ∼ 6 ns and the other is of non-exponential but proportional to t-1. The latter component seems to be recombination luminescence due to an intermolecular polaron, in which an electron and a hole are separately localized with accompanying some structural relaxation. © 2005 American Institute of Physics [ABSTRACT FROM AUTHOR]

Published
2005
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19. Image of second harmonic emission generated from ponderomotively excited plasma density gradient.

Author

Mori, M., Shiraishi, T., Abe, H., Taki, S., Kawada, Y., and Kondo, K.

Subjects
*PONDEROMOTIVE force, *POLARIZATION (Nuclear physics), *RAMAN effect
Abstract

We report on the observation of the second harmonic emission from underdense plasma without Raman scattering instability. Obtained second harmonic images were strongly depended on the polarization of the pump pulse. Experimental results were compared with the theoretical model of the second harmonic generation excited by ponderomotive electrons. [ABSTRACT FROM AUTHOR]

Published
2002

20. The SNR W28 at TeV energies.

Author

Rowell, G. P., Naito, T., Dazeley, S. A., Edwards, P. G., Gunji, S., Hara, T., Holder, J., Kawachi, A., Kifune, T., Matsubara, Y., Mizumoto, Y., Mori, M., Muraishi, H., Muraki, Y., Nishijima, K., Ogio, S., Patterson, J. R., Roberts, M. D., Sako, T., and Sakurazawa, K.

Subjects
SUPERNOVA remnants, TELESCOPE maintenance & repair, COSMIC rays, ASTRONOMICAL observations
Abstract

The southern supernova remnant (SNR) W28 was observed in 1994 and 1995 by the CANGAROO 3.8m telescope in a search for multi-TeV gamma ray emission, using the Cˇerenkov imaging technique. We obtained upper limits for a variety of point-like and extended features within a ±1° region and briefly discuss these results, together with that of EGRET within the framework of a shock acceleration model of the W28 SNR. © 2000 American Institute of Physics. [ABSTRACT FROM AUTHOR]

Published
2000

21. Initial performance of CANGAROO-II 7m telescope.

Author

Kubo, Hidetoshi, Dazeley, S. A., Edwards, P. G., Gunji, S., Hara, S., Hara, T., Jinbo, J., Kawachi, A., Kifune, T., Kushida, J., Matsubara, Y., Mizumoto, Y., Mori, M., Moriya, M., Muraishi, H., Muraki, Y., Naito, T., Nishijima, K., Patterson, J. R., and Roberts, M.D.

Subjects
TELESCOPES, GAMMA rays
Abstract

CANGAROO group constructed an imaging air Cherenkov telescope (CANGAROO-II) in March 1999 at Woomera, South Australia to observe celestial gamma-rays in hundreds GeV region. It has a 7m parabolic mirror consisting of 60 small plastic spherical mirrors, and the prime focus is equipped with a multi-pixel camera of 512 PMTs covering the field of view of 3 degrees. We report initial performance of the telescope. © 2000 American Institute of Physics. [ABSTRACT FROM AUTHOR]

Published
2000

22. TeV gamma ray emission from southern sky objects and CANGAROO project

Author

Kifune, T., primary, Dazeley, S. A., additional, Edwards, P. G., additional, Hara, T., additional, Hayami, Y., additional, Kamei, S., additional, Kita, R., additional, Konishi, T., additional, Masaike, A., additional, Matsubara, Y., additional, Matsuoka, Y., additional, Mizumoto, Y., additional, Mori, M., additional, Muraishi, H., additional, Muraki, Y., additional, Naito, T., additional, Nishijima, K., additional, Ogio, S., additional, Patterson, J. R., additional, Roberts, M. D., additional, Rowell, G. P., additional, Sako, T., additional, Sakurazawa, K., additional, Susukita, R., additional, Suzuki, A., additional, Suzuki, R., additional, Tamura, T., additional, Tanimori, T., additional, Thornton, G. J., additional, Yanagita, S., additional, Yoshida, T., additional, and Yoshikoshi, T., additional

Published
1997
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23. Suppression of disruptions with ECH on JFT-2M

Author

Hoshino, K., primary, Mori, M., additional, Yamamoto, T., additional, Tamai, H., additional, Shoji, T., additional, Miura, Y., additional, Aikawa, H., additional, Kasai, S., additional, Kawakami, T., additional, Kawashima, H., additional, Maeno, M., additional, Matsuda, T., additional, Nagashima, K., additional, Oasa, K., additional, Odajima, K., additional, Ogawa, H., additional, Ogawa, T., additional, Seike, T., additional, Shiina, T., additional, Uehara, K., additional, Yamauchi, T., additional, Suzuki, N., additional, and Maeda, H., additional

Published
1994
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24. H-mode by edge ECH in JFT-2M.

Author

Hoshino, K., Yamamoto, T., Kawashima, H., Tamai, H., Ogawa, T., Odajima, K., Suzuki, N., Uesugi, Y., Mori, M., Aikawa, H., Kasai, S., Kawakami, T., Matsuda, T., Miura, Y., Ogawa, H., Ohtsuka, H., Shoji, T., Yamauchi, T., Kondo, T., and Nakazawa, I.

Published
1989
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25. Fast wave current drive experiment on JFT-2M.

Author

Uesugi, Y., Yamamoto, T., Hoshino, K., Ohtsuka, H., Kawashima, H., Hasegawa, M., Kasai, S., Kawakami, T., Matoba, T., Matsuda, T., Matsumoto, H., Miura, M., Mori, M., Odajima, K., Ogawa, H., Ogawa, T., Sengoku, S., Shoji, T., Suzuki, N., and Tamai, T.

Published
1987
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