HYDROGEN TRAPPING IN ZIRCONIUM UNDER PLASMA CONDITIONS.

被引：14

作者：

Yamashita, K. ^{[1
]}

Gimzewski, J.K. ^{[1
]}

Veprek, S. ^{[1
]}

机构：

[1] Univ of Zuerich, Inst of Inorganic, Chemistry, Zurich, Switz, Univ of Zuerich, Inst of Inorganic Chemistry, Zurich, Switz

来源：

Journal of Nuclear Materials | 1984年 / 128-129卷

关键词：

HYDROGEN - Transport Properties - PLASMAS - ZIRCONIUM AND ALLOYS;

D O I：

10.1016/0022-3115(84)90440-9

中图分类号：

学科分类号：

摘要：

For large Tokamaks of reactor dimensions, and, in particular, for those operating with a divertor, the interaction of hydrogen ions and atoms at low energies is of significant importance as there is a high flux density of such species in the boundary layer with energies below the implantation threshold. Hydriding of zirconium under conditions of low-pressure plasma has been studied by means of in-situ thermogravimetry. With atomic hydrogen at energies below implantation threshold the steady-state pseudoequilibrium concentration of hydrogen exceeds the value expected from the equilibrium diagram by several orders of magnitude. For example, at 600 degree C and a total pressure of 0. 05 Torr the atomic ratio left bracket H right bracket : left bracket Zr right bracket equals 1. 94 is reached instead of the equilibrium value of 0. 03.

引用

页码：705 / 707