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10
W/cm
Skobelev, I. Yu.*; Ryazantsev, S. N.*; Kulikov, R. K.*; Sedov, M. V.*; Filippov, E. D.*; Pikuz, S. A.*; Asai, Takafumi*; Kanasaki, Masato*; Yamauchi, Tomoya*; Jinno, Satoshi; et al.
Photonics (Internet), 10(11), p.1250_1 - 1250_11, 2023/11
Times Cited Count：4 Percentile：35.48(Optics)It is challenging to clearly distinguish the impacts of the optical field and collisional ionization in the evolution of the charge state of a plasma produced when matter interacts with high-intensity laser pulses. In this work, time-dependent calculations of plasma kinetics are used to show that it is possible only when low-density gaseous targets with sufficiently small clusters are used. In the case of Ar plasma, the upper limit of the cluster radius was estimated to be 
m.
Hayashi, Yukio; Pirozhkov, A. S.; Kando, Masaki; Ogura, Koichi; Kotaki, Hideyuki; Kiriyama, Hiromitsu; Okada, Hajime; Goto, Hideki*; Nishikawa, Tadashi*
Laser and Particle Beams, 31(3), p.419 - 425, 2013/09
Times Cited Count：1 Percentile：4.13(Physics, Applied)To increase X-ray photon number generated by laser-cluster interaction, it is important to understand the dependence of X-ray generation on cluster size. We carried out Xe K-shell X-ray generation using a conical nozzle with Xe clusters, the radius of which was controllable by adjusting the backing pressure. The experiment clarifies the result that the Xe K-shell X-ray photon number increases with increasing cluster radius from 8 to 12 nm, and saturates at the radius between 12 and 17 nm. We also investigated the Xe K-shell X-ray photon number dependence on laser intensity, and found that the threshold laser intensity of the Xe K-shell X-ray generation exists between 210
and 510
W/cm
.
Yoshida, Masaru; Nagaoka, Noiyasu*; Asano, Masaharu; Omichi, Hideki; Kubota, Hitoshi*; Ogura, K.*; Vetter, J.*; Spohr, R.*; Katakai, Ryoichi*
Journal of Nuclear Materials, 122(1), p.39 - 44, 1997/00
no abstracts in English
Aoki, Katsunori; Ogura, Hideki; Kubota, Mitsuru; Tsurudome, Koji; Ikeda, Koki; Nagasaki, Yasushi; Ogata, Nobuhisa; Furuta, Sadaaki*
no journal, ,
no abstracts in English
Aoki, Katsunori; Ogura, Hideki; Ogata, Nobuhisa; Ikeda, Koki; Nagasaki, Yasushi; Tsurudome, Koji; Furuta, Sadaaki*
no journal, ,
no abstracts in English
Yasue, Kenichi*; Hiramatsu, Yoshihiro*; Ogawa, Satoshi*; Yamazaki, Reiji*; Hirose, Kentaro*; Miura, Kazumasa*; Shirahama, Yoshiki*; Sugito, Nobuhiko*; Mukoyoshi, Hideki*; Fujita, Natsuko; et al.
no journal, ,
In the Noto Peninsula earthquake in 2024, fault scarps exceeding 2 m were formed in some areas along the Wakayama River. Part of this scarps overlap with existing cliff. This suggests that the fault may have been displace in the past. In this study, we carried out the excavation survey across the fault scarp to clarify the mechanism of scarp formation and past displacement. In addition, heavy rains on the Noto Peninsula in September 2024 caused large-scale flooding in the Wakayama River. The fault outcrop appeared due to lateral erosion caused by floodwaters. We also observed this outcrop.
