Ion and neutron beam analyses of hydrogen isotopes

Kubota, Naoyoshi; Ochiai, Kentaro; Kutsukake, Chuzo; Kondo, Keitaro*; Shu, Wataru; Nishi, Masataka; Nishitani, Takeo

Fusion Engineering and Design, 81(1-7), p.227 - 231, 2006/02

https://doi.org/10.1016/j.fusengdes.2005.09.022

Hydrogen isotopes play important roles in the fuel recycling, the plasma condition etc. at the surface region of plasma facing components. The Fusion Neutronics Source (FNS) of Japan Atomic Energy Research Institute has started microanalysis studies for fusion components since 2002 by applying the beam analyses. In this study, we have measured tritium depth profiles of TFTR tiles exposed to the deuterium-tritium plasma to reveal the hydrogen isotope behavior at the surface region using some microscopic techniques for material analyses at FNS. As the result of the deuteron nuclear reaction analysis, four kinds of elements; deuterium, tritium, lithium-6 and lithium-7, were identified from the energy spectra. Using the spectra, depth profiles of each element were also calculated. The tritium profile had a peak at 0.5 micron, whereas the deuterium and lithium profiles were uniform from the surface to 1.0 micron depth. In addition, the surface region of the TFTR tile has retained the tritium more than one order of magnitude in the bulk.

Comparison of tritium retention and carbon deposition in JET and JT-60U

Tanabe, Tetsuo*; Sugiyama, Kazuyoshi*; Coad, P.*; Bekris, N.*; Glugla, M.*; Miya, Naoyuki

Journal of Nuclear Materials, 345(2-3), p.89 - 95, 2005/10

https://doi.org/10.1016/j.jnucmat.2005.05.004

no abstracts in English

Data processing system of GA and PPPL

Oshima, Takayuki

JAERI-Review 2001-034, 43 Pages, 2001/11

JAERI-Review-2001-034.pdf:13.99MB

Results of research in 1997 to General Atomics ( GA ) and Princeton Plasma Physics Laboratory ( PPPL ) are reported. The author visited the computer system of fusion group in GA. He joined the tokamak experiment in DIII-D, especially on the demonstration of the remote experiment inside U.S., and investigated the data processing system of DIII-D and the computer network, etc.After the visit to GA, He visited PPPL and exchanged the information about the equipment of remote experiment between JAERI and PPPL based on the US-Japan fusion energy research cooperation. He also investigated the data processing system of TFTR tokamak, the computer network and so on. Results of research of the second visit to GA in 2000 are also reported, which describes a rapid progress of each data processing equipment by the advance on the computer technology in just three years.

Radiation effects and safety control of tritium, 2; Status of tritium use and source term

Noguchi, Hiroshi

Nihon Genshiryoku Gakkai-Shi, 39(11), p.915 - 916, 1997/00

no abstracts in English

DT experiments in TFTR; Introduction

Nishitani, Takeo; *

Purazuma, Kaku Yugo Gakkai-Shi, 71(3), p.212 - 213, 1995/03

https://ci.nii.ac.jp/naid/110003827004

no abstracts in English

Radiological safety of D-T experiments

Miya, Naoyuki

Purazuma, Kaku Yugo Gakkai-Shi, 71(3), p.241 - 245, 1995/03

https://ci.nii.ac.jp/naid/110003827009

no abstracts in English

Ion temperature profile simulation of JT-60 and TFTR plasmas with ion temperature gradient mode transport models

Shirai, Hiroshi; Hirayama, Toshio; Koide, Yoshihiko; Yoshida, Hidetoshi; Naito, Osamu; Sato, Masayasu; Fukuda, Takeshi; Sugie, Tatsuo; Azumi, Masafumi; D.R.Mikkelsen*; et al.

Nuclear Fusion, 34(5), p.703 - 727, 1994/00

https://doi.org/10.1088/0029-5515/34/5/I09

no abstracts in English

Proceedings of the Workshop of Three Large Tokamak Cooperation on Energy Confinement Scaling Under Intensive Auxiliary Heating; May 18 20, 1992, Naka

JAERI-M 92-128, 27 Pages, 1992/09

JAERI-M-92-128.pdf:1.27MB

no abstracts in English

Neutron spectroscopy with He ionization chamber on TFTR

Nishitani, Takeo; J.D.Strachan*

Japanese Journal of Applied Physics, 29(3), p.591 - 596, 1990/03

https://doi.org/10.1143/JJAP.29.591

no abstracts in English

A Simple model for hot ion plasmas

P.R.Thomas*

JAERI-M 87-064, 16 Pages, 1987/05

JAERI-M-87-064.pdf:0.53MB

no abstracts in English