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Bulanov, S. V.; Esirkepov, T. Z.; Koga, J. K.; Pirozhkov, A. S.; 近藤 公伯; 神門 正城
Research Using Extreme Light; Entering New Frontiers with Petawatt-Class Lasers II (Proceedings of SPIE, Vol.9515), p.95150C_1 - 95150C_13, 2015/06
被引用回数：0 パーセンタイル：0.00(Engineering, Electrical & Electronic)High-order harmonic generation of high intensity ultra-short laser pulses by means of laser produced plasmas are discussed. Since with plasma targets there is no limitation on applicable laser intensity the generated harmonics can be substantially intense. Recent results of experiments and computer simulations on the high-order harmonic generation are briefly reviewed. Main attention is paid to the analysis of basic mechanisms of high-order harmonic generation from overdense and underdense plasma targets irradiated by relativistically intense laser pulses.
西内 満美子; 榊 泰直; Esirkepov, T. Z.; 西尾 勝久; Pikuz, T. A.*; Faenov, A. Ya.*; Pirozhkov, A. S.; 匂坂 明人; 小倉 浩一; 金崎 真聡; et al.
Research Using Extreme Light; Entering New Frontiers with Petawatt-Class Lasers II (Proceedings of SPIE, Vol.9515), p.95151D_1 - 95151D_4, 2015/06
被引用回数：0 パーセンタイル：0.00(Engineering, Electrical & Electronic)超高強度短パルスレーザーと金属ターゲットとの相互作用による多価重イオン加速実験の結果を発表する。10J以下のレーザーエネルギー、36fsのパルス幅、10
のコントラストを持つ200TWのJ-KARENレーザーシステムを用いた。ほぼ完全電離に近い鉄のイオンがトータルで0.9GeVのエネルギーにまで加速された。これは固体薄膜ターゲットと10
Wcm
のレーザーとの相互作用によってはじめて可能となったと考えられる。このように高いQ/Mを持つイオンは既存の重イオン加速器のイオン源においては、達成が難しい。
神門 正城; Bulanov, S. V.; Esirkepov, T. Z.; 福田 祐仁; 林 由紀雄; 金崎 真聡; 桐山 博光; Koga, J. K.; 今 亮; 近藤 公伯; et al.
no journal, ,
The high field sciences, which is typically phenomena excited by intense lasers, are considered. Such interesting fields are rapidly growing due advances in laser technology. In our institute we are upgrading the Ti:sapphire laser system to 
1 petawatt including experimental system. We aim to achieve a focused intensity of 10
W/cm
. Two pilot experiments, generation of 
100 MeV protons and 1 keV coherent X-rays, are planned to demonstrate the usable, total performance of our new J-KAREN-P experimental system. Other possible experiments such as flying mirrors and 
ray flash are also discussed. In addition, we present the current status of the upgrade as well as future prospects.
