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Koga, J. K.
AIP Conference Proceedings 1024, p.25 - 30, 2008/08
Murakami, Masao*; Hishikawa, Yoshio*; Miyajima, Satoshi*; Okazaki, Yoshiko; Sutherland, K.*; Abe, Mitsuyuki*; Bulanov, S. V.; Daido, Hiroyuki; Esirkepov, T. Z.; Koga, J. K.; et al.
AIP Conference Proceedings 1024, p.275 - 300, 2008/08
no abstracts in English
Kando, Masaki; Kiriyama, Hiromitsu; Koga, J. K.; Bulanov, S. V.; Chao, A. W.*; Esirkepov, T. Z.; Hajima, Ryoichi; Tajima, Toshiki
AIP Conference Proceedings 1024, p.197 - 207, 2008/06
no abstracts in English
Morita, Toshimasa; Esirkepov, T. Z.; Bulanov, S. V.; Koga, J. K.; Yamagiwa, Mitsuru
AIP Conference Proceedings 1024, p.114 - 124, 2008/06
We investigate high quality laser proton acceleration with three dimensional particle-in-cell simulations for oblique incidence of the laser pulse on a double-layer target. The double-layer target is composed of a high-Z ion layer coated by a thin and narrow hydrogen patch. The highest proton energy gain is achieved at a certain incidence angle at which the fast proton maximum energy is much grater than the case of normal incidence. The fast protons form a tilted bunch which propagates at some angle with the respect to the normal of the target surface, as determined by the proton energy and the incidence angle.
Pirozhkov, A. S.; Kando, Masaki; Esirkepov, T. Z.; Ma, J.-L.; Fukuda, Yuji; Chen, L. M.; Daito, Izuru; Ogura, Koichi; Homma, Takayuki; Hayashi, Yukio; et al.
no journal, ,
Nishikino, Masaharu; Hasegawa, Noboru; Kawachi, Tetsuya; Ochi, Yoshihiro; Nagashima, Keisuke; Tanaka, Momoko; Kishimoto, Maki; Kunieda, Yuichi; Yamatani, Hiroshi
no journal, ,
We are developing plasma X-ray lasers pumped by ultra-short pulse lasers and have concentrated our efforts on developing a silver X-ray laser (13.9 nm) with spatially full coherence and application research using a highly coherent X-ray laser. Recently, we have developed a new pumping laser system, which is a CPA laser consisting of an OPCPA pre-amplifier and zigzag-slab type glass amplifiers. For the purpose of further application experiments, 0.1-Hz operation of the driver laser and the X-ray laser at a wavelength of 13.9 nm were succeeded.
