Oxidative removal of tokamak codeposits using NO2 and O2

被引：11

作者：

Alegre, D. ^{[1
]}

Finlay, T. J. ^{[2
]}

Davis, J. W. ^{[2
]}

Haasz, A. A. ^{[2
]}

Tabares, F. L. ^{[1
]}

机构：

[1] As Euratom CIEMAT, Madrid 28040, Spain

[2] Univ Toronto, Inst Aerosp Studies, Toronto, ON M3H 5T6, Canada

来源：

JOURNAL OF NUCLEAR MATERIALS | 2013年 / 438卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

DIII-D; THERMOOXIDATION;

D O I：

10.1016/j.jnucmat.2013.01.243

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The rate of removal of deuterium from DIII-D codeposits has been directly compared for thermo-oxidations using NO2 and O-2. At 286 and 350 degrees C and pressures of 2 and 20 kPa, NO2 is significantly more effective than O-2 in removing D from the codeposits. With both NO2 and O-2, only weak pressure dependence is seen for D removal. The gaseous products formed during oxidation have also been studied. Low levels of D-containing gaseous compounds have been detected in comparison to the amount of D removed as measured by post-oxidation laser thermal desorption spectroscopy. Post-oxidation XPS surface analysis showed increased boron concentration, but no increase in the nitrogen content of the codeposits. (C) 2013 Elsevier B. V. All rights reserved.

引用

页码：S1104 / S1108

页数：5

共 9 条

[1] Thermo-oxidation of DIII-D codeposits on open surfaces and in simulated tile gaps [J].