Thermodynamic study of the vaporization of Cs₂UO₄ by high temperature mass spectrometry

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• 作者：Huang ; Jintao ; Yamawaki ; Michio ; Yamaguchi ; Kenji ; Ono ; Futaba ; Yasumoto ; Masaru ; Sakurai ; Hiroshi ; et. al.
• 关键词：Cs₂UO₄ ; Mass spectrometry ; Vaporization behavior ; Reactor severe accident simulation
• 刊名：Journal of Alloys and Compounds
• 出版年：1998
• 期刊代码：45_09258388
• 类别：ms
• 出版时间：June 12, 1998
• 卷：271-273
• 期：Complete
• 页码：625-628
• 文件大小：77.3 K

摘要

With regard to the behavior of high radioactivity fission products in the case of accidents, the thermochemical behavior of Cs₂UO₄ at high temperature is not completely known. A study of the vaporization of Cs₂UO₄ was carried out from 873 to 1373 K using the Knudsen effusion mass spectrometric method. To simulate some LWR accident atmospheres, a D₂/D₂O environment was established by introducing D₂(g) and/or D₂O(g) gas into the Knudsen cell, separately or as a mixed gas. Thus, the influence of the input of D₂/D₂O on the vaporization of Cs₂UO₄ was investigated quantitatively.