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Fujioka, Shinsuke*; Nishimura, Hiroaki*; Nishihara, Katsunobu*; Sasaki, Akira; Sunahara, Atsushi*; Okuno, Tomoharu*; Ueda, Nobuyoshi*; Ando, Tsuyoshi*; Tao, Y.*; Shimada, Yoshinori*; et al.
Physical Review Letters, 95(23), p.235004_1 - 235004_4, 2005/12
Times Cited Count：147 Percentile：95.58(Physics, Multidisciplinary)no abstracts in English
Masnavi, M.*; Nakajima, Mitsuo*; Sasaki, Akira; Hotta, Eiki*; Horioka, Kazuhiko*
Applied Physics Letters, 87(11), p.111502_1 - 111502_3, 2005/09
Times Cited Count：4 Percentile：17.87(Physics, Applied)no abstracts in English
Shimada, Yoshinori*; Nishimura, Hiroaki*; Nakai, Mitsuo*; Hashimoto, Kazuhisa*; Yamaura, Michiteru*; Tao, Y.*; Shigemori, Keisuke*; Okuno, Tomoharu*; Nishihara, Katsunobu*; Kawamura, Toru*; et al.
Applied Physics Letters, 86(5), p.051501_1 - 051501_3, 2005/01
Times Cited Count：113 Percentile：94.26(Physics, Applied)no abstracts in English
Sasaki, Akira; Nishihara, Katsunobu*; Murakami, Masakatsu*; Koike, Fumihiro*; Kagawa, Takashi*; Nishikawa, Takeshi*; Fujima, Kazumi*; Kawamura, Toru*; Furukawa, Hiroyuki*
Applied Physics Letters, 85(24), p.5857 - 5859, 2004/12
Times Cited Count：43 Percentile：80.02(Physics, Applied)no abstracts in English
Masnavi, M.*; Nakajima, Mitsuo*; Sasaki, Akira; Hotta, Eiki*; Horioka, Kazuhiko*
Japanese Journal of Applied Physics, 43(12), p.8285 - 8291, 2004/12
Times Cited Count：5 Percentile：23.97(Physics, Applied)no abstracts in English
Nishihara, Katsunobu*; Nishimura, Hiroaki*; Mochizuki, Takayasu*; Sasaki, Akira
Reza Kenkyu, 32(5), p.330 - 336, 2004/05
no abstracts in English
Kawachi, Tetsuya; Sasaki, Akira; Tanaka, Momoko; Kishimoto, Maki; Hasegawa, Noboru; Nagashima, Keisuke; Koike, Masato; Daido, Hiroyuki; Kato, Yoshiaki
Physical Review A, 69(3), p.033805_1 - 033805_4, 2004/03
Times Cited Count：16 Percentile：57.84(Optics)We have observed strong amplification for the 4d-4p transition of the Ni-like La ions at a wavelength of 8.8nm pumped by a chirped pulse amplificatio Nd:glass laser with an energy of 18 J. In this experiment, laser pulses consist of a pre-pulse and a main pulse with duration of 200ps and 7 ps separated by 250ps. The KeV X-ray spectroscopy and theoretical calculation indicate that the plasma temperature increasesd effectively by reducing the prepulse intensity, and that the substantial gain is generated in a small overcritical region heated by the electron heat transport.
Fujima, Kazumi*; Nishihara, Katsunobu*; Kawamura, Toru*; Furukawa, Hiroyuki*; Kagawa, Takashi*; Koike, Fumihiro*; More, R.*; Murakami, Masakatsu*; Nishikawa, Takeshi*; Sasaki, Akira; et al.
Emerging Lithographic Technologies VIII, Proceedings of SPIE Vol.5374, p.405 - 412, 2004/00
no abstracts in English
Kim, J.*; Kim, D. E.*; Kawachi, Tetsuya; Hasegawa, Noboru; Sukegawa, Kota*; Iwamae, Atsushi*; Fujimoto, Takashi*
Journal of the Optical Society of Korea, 7(3), p.145 - 149, 2003/09
The anistropy of electron energy distribution in oxygen plasmas produced by a high intensinty laser was investigated by using polarization spectroscopy. An ultra-short pulsed laser with a pulse duration of 66.5 fs and a power density of 1
10
W/cm
was used. At this power density and pulse duration, the plasma was generated predominantly by optical field ionization. The degree of polarization of OVI 1s2p P-1s4d D
(J=1/2-3/2 and J=3/2-5/2) transition line at 129.92 
の1s 2pP-1s4sS (J=1/2-1/2 and J=3/2-1/2) transition line at 132.26 AA was used to calibrate the sensitivity of the optical system. The dependencies of the degree of polarization on the initial gas density and on the laser polarization were investigated. When the laser polarization was changed from a linear to a circlar polarization was decreased. When the initial gas density was increased, the degree of polarization was decreased.
Kawachi, Tetsuya; Kado, Masataka; Tanaka, Momoko; Hasegawa, Noboru; Nagashima, Akira; Kato, Yoshiaki
Journal de Physique, IV, 11(Pr2), p.Pr2_225 - Pr2_258, 2001/07
no abstracts in English
Namba, Shinichi; Kawachi, Tetsuya; Hasegawa, Noboru; Nagashima, Keisuke; Sukegawa, Kota*; Kado, Masataka; Tanaka, Momoko; Daido, Hiroyuki; Kato, Yoshiaki
International Journal of Applied Electromagnetics and Mechanics, 11(1), p.1 - 7, 2000/12
no abstracts in English
Okasaka, Kazunobu*; Kawachi, Tetsuya; Oyama, Hitoshi*; Hara, Tamio*; Yamaguchi, Naohiro*; Ando, Kozo*
Japanese Journal of Applied Physics, 39(1), p.70 - 81, 2000/01
Times Cited Count：1 Percentile：6.92(Physics, Applied)no abstracts in English
Kawachi, Tetsuya
NIFS-PROC-44, p.69 - 72, 2000/01
no abstracts in English
Kawachi, Tetsuya; *; Ando, Kozo*; Hara, Tamio*; *
Inst. Phys. Conf. Ser., (159), p.211 - 214, 1999/00
no abstracts in English
Kubo, Hirotaka; Sawada, Keiji*
Purazuma, Kaku Yugo Gakkai-Shi, 74(6), p.562 - 567, 1998/06
no abstracts in English
Wakaida, Ikuo; Oba, Hironori; Ikeda, Yuji*; Sakka, Tetsuo*; Taira, Takunori*
no journal, ,
no abstracts in English
