Tritium removal from codeposits on carbon tiles by a scanning laser
Tritium removal from codeposits on carbon tiles by a scanning laser
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DOI：
10.1016/s0022-3115(02)00713-4
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发表时间：
2001-09
影响因子：
3.1
通讯作者：
C. H. Skinner;C. Gentile;A. Carpe;G. Guttadora;S. Langish;K. M. Young;W.M Shu;H. Nakamura
中科院分区：
文献类型：
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作者：
C. H. Skinner;C. Gentile;A. Carpe;G. Guttadora;S. Langish;K. M. Young;W.M Shu;H. Nakamura
在托卡马克聚变试验反应堆的石墨和碳纤维复合瓦共沉积层上，证明了一种新的氚释放方法。扫描连续波Nd激光束在氩气气氛中将共沉积加热到1200 ~ 2300℃，加热时间为10 ~ 200 ms。共沉积的温升明显高于人造瓷砖材料的温升（例如1770°C，而不是1080°C）。在激光强度为80 W/mm2，峰值温度高于1230℃，加热时间为10-20 ms的条件下，氚的大部分被热解吸，表面变化很小。在两个实验中，激光扫描过程中释放了总氚的46%和84%。这种方法在托卡马克反应器中去除氚的应用看起来很有前景，并且比氧化技术具有显著的优势。
A novel method for tritium release has been demonstrated on codeposited layers on graphite and carbon-fiber-composite tiles from the Tokamak Fusion Test Reactor. A scanning continuous wave Nd laser beam heated the codeposits to a temperature of 1200–2300 °C for 10–200 ms in an argon atmosphere. The temperature rise of the codeposit was significantly higher than that of the manufactured tile material (e.g. 1770 °C cf. 1080 °C). A major fraction of tritium was thermally desorbed with minimal change to the surface at a laser intensity of 80 W/mm2, peak temperatures above 1230 °C and heating duration 10–20 ms. In two experiments, 46% and 84% of the total tritium was released during the laser scan. The application of this method for tritium removal from a tokamak reactor appears promising and has significant advantages over oxidative techniques.