JOPSS - Search Results

Journal Articles

Development of a high-performance microstrip gas chamber with a capability of track discrimination for neutron detection

Nakamura, Tatsuya; Yamagishi, Hideshi; Masaoka, Sei; Soyama, Kazuhiko; Aizawa, Kazuya

Nuclear Instruments and Methods in Physics Research A, 529(1-3), p.336 - 341, 2004/08

https://doi.org/10.1016/j.nima.2004.05.008

Times Cited Count：6 Percentile：40.85(Instruments & Instrumentation)

A microstrip gas chamber (MSGC) with a capability of track discrimination for neutron detection was developed whilst ensuring the stability of the MSGC and fulfilling the specifications required for detectors using in high-flux reactors and high-intensity pulsed-neutron sources. The developed two-dimensional detector system comprises a MSGC with individual signal channel read-outs and a new instrument system with a capability of secondary-particle discrimination (InSPaD). The InSPaD identifies the particles -proton and triton- created in the nuclear reaction $^{3}He + n rightarrow p + T$ by a simple, fast and cost-effective method using the difference in the track length, and it enables a small amount of heavy gas such as $C_{2}H_{6}$ with helium-3 to be used as the filling gas whilst achieving a high spatial resolution.

Journal Articles

Tritium distribution in JT-60U W-shaped divertor

Masaki, Kei; Sugiyama, Kazuyoshi*; Tanabe, Tetsuo*; Goto, Yoshitaka*; Miyasaka, Kazutaka*; Tobita, Kenji; Miyo, Yasuhiko; Kaminaga, Atsushi; Kodama, Kozo; Arai, Takashi; et al.

Journal of Nuclear Materials, 313-316, p.514 - 518, 2003/03

https://doi.org/10.1016/S0022-3115(02)01388-0

Times Cited Count：55 Percentile：94.9(Materials Science, Multidisciplinary)

Detailed tritium profiles on the JT-60U W-shaped divertor and first wall tiles were examined by Tritium Imaging Plate Technique (TIPT) and full combustion method. The tritium deposition image obtained by TIPT was consistent with the distribution measured by combustion method. The highest tritium concentration was 60 kBq/cm $^{2}$ at the dome top tile. However, deposition layer was not obviously observed on the dome top tile. The tritium concentration in the inner divertor target tile was lower (2 kBq/cm $^{2}$ ) even with the thick deposition layer of 60 m. This tritium distribution can be explained by energetic triton particle loss due to ripple loss. According to the simulation using the OFMC code, 31% of the triton particles produced by D-D nuclear reaction is implanted deeply to the wall without fully losing the initial energy of 1 MeV.

Journal Articles

Energy loss and energy straggling of light ions in fullerite

Vacik, J.; Hnatowicz, V.*; Cervena, J.*; Naramoto, Hiroshi; Yamamoto, Shunya; Fink, D.*

Fullerene Science and Technology, 9(2), p.197 - 209, 2001/05

no abstracts in English

Journal Articles

Energy losses of MeV B clusters in solids

Narumi, Kazumasa; *; *; *; Saito, Yuichi; Yamamoto, Shunya; Aoki, Yasushi; Naramoto, Hiroshi

Materials Chemistry and Physics, 54(1-3), p.229 - 233, 1998/00

https://doi.org/10.1016/S0254-0584(98)00031-5

Times Cited Count：1 Percentile：8.21(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Rapid change of ion energy distribution and floating potential at L/H transition in the JFT-2M tokamak

Miura, Yukitoshi; Nagashima, Keisuke; Ito, Kimitaka; Ito, Sanae*; Okano, Fuminori; Suzuki, Norio; Mori, Masahiro; Hoshino, Katsumichi; Maeda, Hikosuke; Takizuka, Tomonori; et al.

Plasma Physics and Controlled Fusion, 36(7A), p.A81 - A86, 1994/07

https://doi.org/10.1088/0741-3335/36/7A/008

Times Cited Count：5 Percentile：24.23(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles