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Tomita, Takuro*; Nishikino, Masaharu; Hasegawa, Noboru; Minami, Yasuo*; Takei, Ryota*; Baba, Motoyoshi*; Eyama, Tsuyoshi*; Takayoshi, Shodai*; Kaihori, Takeshi*; Morita, Toshimasa; et al.
Journal of Laser Micro/Nanoengineering, 9(2), p.137 - 142, 2014/06
Times Cited Count：5 Percentile：29.55(Nanoscience & Nanotechnology)Femtosecond laser ablation processes on platinum, gold, and tungsten were observed by the single shot pump and probe reflective imaging using a soft X-ray laser probe. To avoid the timing error due to the jitter, we adopted a posteriori correction technique by simultaneous measurement of timing between the pump and probe pulses for every single shot, using a soft X-ray streak camera. A clear difference was found in the temporal behavior of the dynamical response of the soft X-ray reflectivity depending on the irradiated laser fluence in these three materials. On the other hand, the narrow dark rings were found in Pt and W, while an additional bright ring was found outside the dark disk in Au. Our result gives the experimental data comparable with various numerical simulations.
Hasegawa, Noboru; Ochi, Yoshihiro; Kawachi, Tetsuya; Nishikino, Masaharu; Ishino, Masahiko; Imazono, Takashi; Kaihori, Takeshi; Morita, Toshimasa; Sasaki, Akira; Terakawa, Kota*; et al.
X-Ray Lasers 2012; Springer Proceedings in Physics, Vol.147, p.117 - 120, 2014/00
Times Cited Count：0 Percentile：0(Engineering, Electrical & Electronic)We have developed the femto-second laser pump and soft X-ray laser probe system in order to observe the dynamical processes of the femto-second laser ablation. By using this system, we succeed to obtain the temporal evolution of the soft X-ray reflectivity from the laser induced Pt surface. The results lead that the rate of decrease in the reflectivity of the probe beam has a non-linear relation with the pump laser fluence.
Sato, Soichi; Endo, Noboru; Fukuda, Kazuhito; Morita, Yasuji
Journal of Nuclear Science and Technology, 49(2), p.182 - 188, 2012/02
Times Cited Count：10 Percentile：60.35(Nuclear Science & Technology)Electrochemical oxidation method, to oxidize nitrosyl ruthenium to the tetra-oxide and then to remove ruthenium to the gas phase, was studied to separate Ru from the high-level liquid waste (HLLW). We carried out the experiments to clarify the effects following fundamental conditions to the electric oxidation, which are (a) electrolyte temperature, (b) presence of promoter elements, (c) evaporation or reflux of condensed phase and (d) using or not using of diaphragm at counter electrode. We found the fast oxidation conditions as follows; (1) higher temperature; 95
C, (2) Ce coexistence; 3000 ppm and (3) usage of a diaphragm for counter electrode. However evaporation or reflux conditions do not directly affect the electrochemical oxidation efficiency. Electric oxidation rate was increased 3 times compared with 25C, without Ce and diaphragm for counter electrode.
Nagase, Kenzo*; Morita, Noboru*; Watanabe, Akiyoshi*; Asao, Toyonobu*
JAERI-Tech 2005-052, 99 Pages, 2005/09
JAERI-Tech-2005-052.pdf:5.92MB
no abstracts in English
Fukuda, Kazuhito; Tomioka, Kenichiro; Endo, Noboru; Sato, Soichi; Yamagishi, Isao; Morita, Yasuji
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no abstracts in English
gas by wet or dry processFukuda, Kazuhito; Endo, Noboru; Sato, Soichi; Moriya, Yoichiro; Morita, Yasuji
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no abstracts in English
Hasegawa, Noboru; Nishikino, Masaharu; Kaihori, Takeshi*; Hirano, Yusuke; Morita, Toshimasa; Kawachi, Tetsuya; Yamagiwa, Mitsuru; Tomita, Takuro*; Minami, Yasuo*; Terakawa, Kota*; et al.
no journal, ,
no abstracts in English
