Effect of water adsorption on tritium release from Li4SiO4 |
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| Authors: | Chunmei Kang Chengjian Xiao Xiaolin Wang Yuhui He Jun Liu Xiaojun Chen Shuming Peng Heyi Wang |
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| Affiliation: | 1. Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mailbox 919-214, Mianyang 621900, China;2. China Academy of Engineering Physics, Mailbox 919-1, Mianyang 621900, China;1. Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Canada;2. MTL-NRCan, 568 Booth Street, Ottawa, Canada;3. Chalk River Laboratories, Atomic Energy of Canada Limited, Chalk River, Canada;1. College of Physical Science and Technology, Sichuan University, Chengdu, 610064, China;2. Key Laboratory of Radiation Physics and Technology of Ministry of Education, Sichuan University, Chengdu, 610064, China;3. Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Box 919-214, Mianyang, 621900, China;1. College of Physical Science and Technology, Sichuan University, Chengdu 610064, China;2. Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Sichuan University, Chengdu 610064, China;3. College of Materials Science and Engineering, Sichuan University, Chengdu 610064, China;4. Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China;1. ENEA for EUROfusion, Via E. Fermi 45, 00044 Frascati, Roma, Italy;2. DEIM, University of Tuscia, Via del Paradiso 47, 01100 Viterbo, Italy;1. Department of Advanced Energy Science, Kyushyu University, Kasuga, Fukuoka, Japan;2. Department of Blanket Systems Research, National Institutes for Quantum and Radiological Science and Technology(QST), Rokkasho-mura, Kamikita-gun, Aomori, Japan |
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| Abstract: | As a ceramic material proposed for tritium breeding in a fusion reactor blanket, lithium orthosilicate (Li4SiO4) is being examined in view of the influence of water uptake on tritium release behavior. In this work, out-of-pile tritium release experiments were performed on Li4SiO4 samples that were transferred and stored under different moisture environments. The water content was measured on the samples that were treated in similar conditions. Effects of water adsorption on the chemical form and temperature of released tritium were investigated. It is found that with the water content increases, the gaseous tritium fraction decreases and the proportion of low-temperature desorption of HTO increases. The results of this study can be used later for engineering and design activities for fusion reactor blankets. |
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