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Oks, E.*; Dalimier, E.*; Faenov, A.*; Pikuz, T.*; Fukuda, Yuji; Andreev, A.*; Koga, J. K.; Sakaki, Hironao; Kotaki, Hideyuki; Pirozhkov, A. S.; et al.
Optics Express (Internet), 23(25), p.31991 - 32005, 2015/12
Times Cited Count：7 Percentile：38.91(Optics)We present experiments dealing with a femtosecond laser-driven cluster-based plasma, where by analyzing the nonlinear phenomenon of satellites of spectral lines of Ar XVII, we revealed the nonlinear phenomenon of the generation of the second harmonic of the laser frequency. For performing this analysis we developed new results in the theory of satellites of spectral lines. From such lineshape analysis we found, in particular, that the efficiency of converting the short (40 fs) intense (3
10
W/cm
) incident laser light into the second harmonic was 2%. This result is in the excellent agreement with the 2-Dimensional Particle-In-Cell (2D PIC) simulation that we also performed. There is also an order of magnitude agreement between the thresholds for the SHG found from the line shape analysis and from the 2D PIC simulations.
Zhidkov, A.*; Masuda, Shinichi*; Bulanov, S. S.*; Koga, J. K.; Hosokai, Tomonao*; Kodama, Ryosuke*
Physical Review Special Topics; Accelerators and Beams, 17(5), p.054001_1 - 054001_7, 2014/05
Times Cited Count：11 Percentile：60.34(Physics, Nuclear)Bulanov, S. V.; Esirkepov, T. Z.; Kando, Masaki; Koga, J. K.; Hosokai, Tomonao*; Zhidkov, A.*; Kodama, Ryosuke*
Physics of Plasmas, 20(8), p.083113_1 - 083113_10, 2013/08
Times Cited Count：19 Percentile：64.31(Physics, Fluids & Plasmas)Bulanov, S. V.; Esirkepov, T. Z.; Kando, Masaki; Koga, J. K.; Nakamura, Tatsufumi; Bulanov, S. S.*; Zhidkov, A.*; Kato, Yoshiaki; Korn, G.*
High-Power, High-Energy, and High-Intensity Laser Technology; and Research Using Extreme Light: Entering New Frontiers with Petawatt-Class Lasers (Proceedings of SPIE, Vol.8780), p.878015_1 - 878015_15, 2013/05
Times Cited Count：10 Percentile：96.7(Optics)Bulanov, S. S.*; Chen, M.*; Schroeder, C. B.*; Esarey, E.*; Leemans, W. P.*; Bulanov, S. V.; Esirkepov, T. Z.; Kando, Masaki; Koga, J. K.; Zhidkov, A. G.*; et al.
AIP Conference Proceedings 1507, p.825 - 830, 2012/12
Times Cited Count：9 Percentile：92.86(Physics, Applied)Bulanov, S. V.; Esirkepov, T. Z.; Hayashi, Yukio; Kando, Masaki; Kiriyama, Hiromitsu; Koga, J. K.; Kondo, Kiminori; Kotaki, Hideyuki; Pirozhkov, A. S.; Bulanov, S. S.*; et al.
AIP Conference Proceedings 1465, p.87 - 96, 2012/07
Times Cited Count：1 Percentile：46.45(Physics, Applied)Bulanov, S. V.; Esirkepov, T. Z.; Hayashi, Yukio; Kando, Masaki; Kiriyama, Hiromitsu; Koga, J. K.; Kondo, Kiminori; Kotaki, Hideyuki; Pirozhkov, A. S.; Bulanov, S. S.*; et al.
Nuclear Instruments and Methods in Physics Research A, 660(1), p.31 - 42, 2011/12
Times Cited Count：71 Percentile：98.1(Instruments & Instrumentation)Bulanov, S. V.; Esirkepov, T. Z.; Hayashi, Yukio; Kando, Masaki; Kiriyama, Hiromitsu; Koga, J. K.; Kondo, Kiminori; Kotaki, Hideyuki; Pirozhkov, A. S.; Bulanov, S. S.*; et al.
Plasma Physics and Controlled Fusion, 53(12), p.124025_1 - 124025_13, 2011/12
Times Cited Count：6 Percentile：27.22(Physics, Fluids & Plasmas)Bulanov, S. V.; Esirkepov, T. Z.; Hayashi, Yukio; Kando, Masaki; Kiriyama, Hiromitsu; Koga, J. K.; Kondo, Kiminori; Kotaki, Hideyuki; Pirozhkov, A. S.; Bulanov, S. S.*; et al.
Plasma Physics and Controlled Fusion, 53(12), p.124025_1 - 124025_13, 2011/11
Bulanov, S. V.; Esirkepov, T. Z.; Kando, Masaki; Koga, J. K.; Pirozhkov, A. S.; Rosanov, N. N.*; Zhidkov, A.*
AIP Conference Proceedings 1320, p.235 - 243, 2010/12
Zhidkov, A.*; Koga, J. K.; Hosokai, Tomonao*; Fujii, Takashi*; Oishi, Yuji*; Nemoto, Koshichi*; Kodama, Ryosuke*
Physics of Plasmas, 17(8), p.083101_1 - 083101_6, 2010/08
Times Cited Count：11 Percentile：39.78(Physics, Fluids & Plasmas)Zhidkov, A.*; Esirkepov, T. Z.; Fujii, Takashi*; Nemoto, Koshichi*; Koga, J. K.; Bulanov, S. V.
Physical Review Letters, 103(21), p.215003_1 - 215003_4, 2009/11
Times Cited Count：15 Percentile：64.36(Physics, Multidisciplinary)Kando, Masaki; Fukuda, Yuji; Kotaki, Hideyuki; Koga, J. K.; Bulanov, S. V.; Tajima, Toshiki; Chao, A. W.*; Pitthan, R.*; Schuler, K.-P.*; Zhidkov, A. G.*; et al.
Journal of Experimental and Theoretical Physics, 105(5), p.916 - 926, 2007/11
Times Cited Count：15 Percentile：62.92(Physics, Multidisciplinary)We suggest a novel method for injection of electrons into the acceleration phase of particle accelerators, producing low emittance beams appropriate even for the demanding high energy Linear Collider specifications. We discuss the injection mechanism into the acceleration phase of the wake field in a plasma behind a high intensity laser pulse, which takes advantage of the laser polarization and focusing. As shown in three-dimensional particle-in-cell simulations of the interaction of an elongated in transverse direction laser pulse with an underdense plasma, the electrons, injected via the transverse wake wave breaking and accelerated by the wake wave, perform betatron oscillations with different amplitudes and frequencies along the two transverse coordinates. The polarization and focusing geometry lead to a way to produce relativistic electron bunches with asymmetric emittance (flat beam). An approach for generating flat laser accelerated ion beams is briefly discussed.
Daido, Hiroyuki; Sagisaka, Akito; Ogura, Koichi; Orimo, Satoshi; Nishiuchi, Mamiko; Yogo, Akifumi; Mori, Michiaki; Li, Z.*; Kiriyama, Hiromitsu; Kanazawa, Shuhei; et al.
X-Ray Lasers 2006; Springer Proceedings in Physics, Vol.115, p.595 - 605, 2007/00
At present, using ultra-short high intensity lasers at APRC, JAEA Kansai photon research institute, we are developing laser driven multiple quantum beams such as protons, X-rays, electrons and THz waves. These beams are perfectly synchronized with each other. The pulse duration of each beam is lass than a pico-second. They have sharp directionality with high brightness. If we properly combined these, we have new pump-probe techniques for various applications.
Kando, Masaki; Masuda, Shinichi; Zhidkov, A.*; Yamazaki, Atsushi; Kotaki, Hideyuki; Kondo, Shuji; Homma, Takayuki*; Kanazawa, Shuhei; Nakajima, Kazuhisa; Hayashi, Yukio; et al.
Physical Review E, 71(1), p.015403_1 - 015403_4, 2005/01
Times Cited Count：33 Percentile：77.37(Physics, Fluids & Plasmas)no abstracts in English
Koga, J. K.; Zhidkov, A.*; Sasaki, Akira; Uesaka, Mitsuru*
Inertial Fusion Sciences and Applications 2003, p.237 - 241, 2004/00
By focusing petawatt class lasers to very small spot sizes the amount of radiation emitted by electrons can become very large. Resultingly, the damping of the electron motion by the emission of this radiation can become large. It has been found that in the radiation damping regime of the laser pulse-plasma interaction a substantial portion of the laser pulse energy is converted into very short wavelength electromagnetic radiation. Even in the relatively low intensity limit, radiation damping may play an important role. In order to study this problem a code is written to solve a set of equations describing the evolution of a strong electromagnetic wave interacting with plasma. These equations include the effect of radiation damping. The equations are finite differenced and solved on a uniform grid in one spatial dimension. The difference in the laser pulse and plasma electron dynamics will be studied in both regimes of low damping and high damping.
Zhidkov, A. J.*; Koga, J. K.; Sasaki, Akira; Uesaka, Mitsuru*
Physical Review Letters, 88(18), p.185002_1 - 185002_4, 2002/05
Times Cited Count：181 Percentile：96.39(Physics, Multidisciplinary)A strong effect of radiation damping on the interaction of an ultra-intense laser pulse with an overdense plasma slab is found and studied via a relativistic particle-in-cell simulation including ionization. Hot electrons generated by the irradiation of a laser pulse with a radiance of 
W
m/cm and duration of 20 fs can convert more than 35% of the laser energy to radiation. This incoherent X-ray emission lasts for only the pulse duration and can be intense. The radiation efficiency is shown to increase nonlinearly with laser intensity. Similar to cyclotron radiation, the radiation damping may restrain the maximal energy of relativistic electrons in ultra-intense-laser-produced plasmas.
Moribayashi, Kengo; Zhidkov, A. J.*; Sasaki, Akira; Sudo, Keiko; Suzuki, Shingo*
Atomic Collision Research in Japan, No.27, p.1 - 3, 2001/00
no abstracts in English
W/cm
Faenov, A.*; Colgan, J.*; Abdallah, J. Jr.*; Pikuz, S. A.*; Wagenaars, E.*; Booth, N.*; Brown, C. R. D.*; Culfa, O.*; Dance, R.*; Evans, R.*; et al.
no journal, ,
W/cmFaenov, A.*; Hansen, S.*; Colgan, J.*; Abdallah, J.*; Pikuz, T.; Pikuz, S.*; Skobelev, I.*; Nishiuchi, Mamiko; Sakaki, Hironao; Maeda, Shota; et al.
no journal, ,
W/cmFaenov, A.*; Hansen, S. B.*; Colgan, J.*; Abdallah, J.*; Pikuz, T.; Pikuz, S. A.*; Skobelev, I. Y.*; Nishiuchi, Mamiko; Sakaki, Hironao; Maeda, Shota; et al.
no journal, ,
