[Table of Contents]

Plasma and Fusion Research

Volume 8, 2405174 (2013)

Regular Articles


Deuterium Retention Properties of Co-Deposited Carbon Films Produced at Wall Gaps
Yuji NOBUTA, Jun KANAZAWA, Yuji YAMAUCHI, Tomoaki HINO, Kenji YOKOYAMA1), Satoshi SUZUKI1), Koichiro EZATO1), Mikio ENOEDA1), Masato AKIBA1), Satoshi AKAMARU2) and Yuji HATANO2)
Laboratory of Plasma Physics and Engineering, Hokkaido University, Sapporo 060-8628, Japan
1)
Japan Atomic Energy Agency, 801-1 Mukouyama, Naka-shi, Ibaraki 311-0193, Japan
2)
Hydrogen Isotope Research Center, University of Toyama, 3190 Gofuku, Toyama 930-8555, Japan
(Received 22 November 2012 / Accepted 13 November 2013 / Published 27 December 2013)

Abstract

Deuterium retention properties in co-deposited carbon film produced in gap and the relationship between this retention behavior and the crystal structure of carbon film were investigated. In the case of a wide gap, the atomic ratio of deuterium to carbon (D/C) in the film was almost constant at any depth in the gap, while in the case of a narrow gap the D/C ratio decreased with increasing distance from the gap entrance. The micro structure of carbon film tended to be more amorphous for the film produced at locations deeper in the gap. Thermal desorption spectra of D2 in the film produced near the gap entrance showed one broad main peak at around 1100 K, while that in the film produced near the bottom showed very sharp peaks at around 950 K. This difference in desorption behavior was related with the differences of micro structure.


Keywords

carbon, co-deposition, gap, deuterium retention, TDS, desorption

DOI: 10.1585/pfr.8.2405174


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This paper may be cited as follows:

Yuji NOBUTA, Jun KANAZAWA, Yuji YAMAUCHI, Tomoaki HINO, Kenji YOKOYAMA, Satoshi SUZUKI, Koichiro EZATO, Mikio ENOEDA, Masato AKIBA, Satoshi AKAMARU and Yuji HATANO, Plasma Fusion Res. 8, 2405174 (2013).