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Nakano, Tomohide; Shumack, A.*; Maggi, C. F.*
Journal of Physics B; Atomic, Molecular and Optical Physics, 2 Pages, 2016/01
Collaboration of researchers from Japan Atomic Energy Agency and EUROfusion Consortium (Dutch Institute For Fundamental Energy Research, Max-Planck-Institut f
r Plasmaphysik and so on) successfully led to determination of tungsten ion density in high temperature plasmas in Joint European Torus (JET) with an upgraded X-ray spectrometer. The researchers used the FAC code and successfully identified 
, 
and 
spectral lines. The line identification was confirmed experimentally by Mo injection to the plasma. From the measured absolute intensity of these spectral lines, tungsten and molybdenum ion densities in the plasma core were determined.
Sugie, Tatsuo
Purazuma Shindan No Kiso To Oyo, p.116 - 131, 2006/03
Radiation from the plasma degrades the performance of energy confinement. In addition, the efficiency of fusion reaction will be decreased by the fuel dilution due to the impurity ions in the plasma. Therefore, the impurity control (generation, reduction of the contamination, exhaust) becomes an important research subject. Spectroscopic diagnostics is the one of the most important methods to study such subjects. On the other hand, it is also utilized for the measurements of plasma parameters such as ion temperature, plasma current distribution etc. In this section, the radiation behavior and the spectroscopic diagnostics of high temperature plasma are described.
Shimada, Michiya; Costley, A. E.*; Federici, G.*; Ioki, Kimihiro*; Kukushkin, A. S.*; Mukhovatov, V.*; Polevoi, A. R.*; Sugihara, Masayoshi
Journal of Nuclear Materials, 337-339, p.808 - 815, 2005/03
Times Cited Count：63 Percentile：96.38(Materials Science, Multidisciplinary)ITER is an experimental fusion reactor for investigation and demonstration of burning plasmas, characterised of its heating dominated by alpha-particle heating. ITER is a major step from present devices and an indispensable step for fusion reactor development. ITER's success largely depends on the control of plasma-wall interactions(PWI), with power and particle fluxes and time scales one or two orders of magnitude larger than in present devices. The strategy for control of PWI includes the semi-closed divertor, strong fuelling and pumping, disruption and ELM control, replaceable plasma-facing materials and stepwise operation.
Shimada, Michiya
Purazuma, Kaku Yugo Gakkai-Shi, 80(3), p.222 - 226, 2004/03
Discussion is made on objectives of edge plasma and plasma-wall interaction studies, divertor performance projection of ITER and key R&D issues on plasma-wall interaction including material issues, tritium retention, and transient events like ELMs and disruptions. A perspective of future development is discussed for the purpose of projection to and control of ITER plasma.
Mironov, M. I.*; Khudoleev, A. V.*; Kusama, Yoshinori
Plasma Physics Reports, 30(2), p.164 - 168, 2004/02
Times Cited Count：0 Percentile：0.02(Physics, Fluids & Plasmas)High-energy charge-exchange diagnostics can determine the distribution function of fast atoms produced via the neutralization of hydrogen ions by hydrogen-like impurity ions. Deriving the distribution function requires to know the composition and spatial distribution of the target ions in a plasma. A charge-exchange target forms as a result of the interaction between impurity nuclei and beam atoms. Depending on the arrangement of heating beams with respect to the diagnostics, it is necessary to calculate their trajectories. A model which takes into account elementary processes resulting in the ionization equilibrium of the ions of impurities in a specific tokamak configuration is proposed. The model is applied to the JT-60U plasma. Mechanisms for the formation of charge-exchange atomic flows are considered. The relative contributions of different heating injectors to the charge-exchange flow are estimated. Based on the calculated results, a method is proposed for local measurements of the ion distribution function with a stationary analyzer.
Kubo, Hirotaka; Sakurai, Shinji; Higashijima, Satoru; Takenaga, Hidenobu; Itami, Kiyoshi; Konoshima, Shigeru; Nakano, Tomohide; Koide, Yoshihiko; Asakura, Nobuyuki; Shimizu, Katsuhiro; et al.
Journal of Nuclear Materials, 313-316(1-3), p.1197 - 1201, 2003/03
Times Cited Count：19 Percentile：76.2(Materials Science, Multidisciplinary)no abstracts in English
Ishijima, Tatsuo
JAERI-Research 2000-015, p.94 - 0, 2000/03
JAERI-Research-2000-015.pdf:3.4MB
no abstracts in English
Yoshino, Ryuji
Purazuma, Kaku Yugo Gakkai-Shi, 75(12), p.1337 - 1374, 1999/12
no abstracts in English
Nakano, Tomohide; Kubo, Hirotaka; Sugie, Tatsuo; Higashijima, Satoru; Suzuki, Shingo*; Sakasai, Akira; Itami, Kiyoshi
JAERI-Research 99-003, 16 Pages, 1999/01
JAERI-Research-99-003.pdf:0.58MB
no abstracts in English
Sugie, Tatsuo; Ogawa, Hiroaki; *; *; Ebisawa, Katsuyuki*; Ando, Toshiro; *; Kasai, Satoshi; Nishitani, Takeo
Review of Scientific Instruments, 70(1), p.351 - 354, 1999/01
Times Cited Count：10 Percentile：59.02(Instruments & Instrumentation)no abstracts in English
Kato, Takako*; *; Murakami, Izumi*; *; Kubo, Hirotaka; Shimizu, Katsuhiro
Proc. of 1996 Int. Conf. on Plasma Physics, 1, p.730 - 733, 1996/00
no abstracts in English
Saido, Masahiro; Ogiwara, Norio; Shimada, Michiya; Arai, Takashi; Hiratsuka, Hajime; ; Shimizu, Masatsugu; Ninomiya, Hiromasa; Nakamura, Hiroo; *; et al.
Japanese Journal of Applied Physics, 32(7), p.3276 - 3281, 1993/07
Times Cited Count：54 Percentile：90.36(Physics, Applied)no abstracts in English
Saido, Masahiro; Hiratsuka, Hajime; Arai, Takashi; Neyatani, Yuzuru; Shimada, Michiya;
Fusion Engineering and Design, 22, p.271 - 275, 1993/00
Times Cited Count：31 Percentile：96.57(Nuclear Science & Technology)no abstracts in English
Yoshino, Ryuji; Neyatani, Yuzuru; Hosogane, Nobuyuki; S.W.Wolfe*; Matsukawa, Makoto; Ninomiya, Hiromasa
Nuclear Fusion, 33(11), p.1599 - 1612, 1993/00
Times Cited Count：33 Percentile：71.34(Physics, Fluids & Plasmas)no abstracts in English
Hirayama, Toshio; Sugie, Tatsuo; Sakasai, Akira; Yoshino, Ryuji;
JAERI-M 91-169, 15 Pages, 1991/10
no abstracts in English
*; ; ; ; *
Nucl.Technol./Fusion, 4, p.498 - 507, 1983/00
no abstracts in English
JAERI-M 8750, 92 Pages, 1980/03
no abstracts in English
*;
JAERI-M 8420, 50 Pages, 1979/09
no abstracts in English
Sengoku, Seio; ; *; ;
JAERI-M 7918, 62 Pages, 1978/10
no abstracts in English
JAERI-M 5849, 20 Pages, 1974/09
no abstracts in English
Ogawa, Hiroaki; Kitazawa, Sin-iti; Sugie, Tatsuo; Katsunuma, Atsushi*; Kitazawa, Daisuke*; Omori, Keisuke*; Itami, Kiyoshi
no journal, ,
no abstracts in English
