Study of local carbon transport on graphite, tungsten and molybdenum test limiters in TEXTOR by 13CH4 tracer injection
Study of local carbon transport on graphite, tungsten and molybdenum test limiters in TEXTOR by 13CH4 tracer injection
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DOI：
10.1016/j.jnucmat.2007.01.054
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发表时间：
2007-06
影响因子：
3.1
通讯作者：
A. Kreter;P. Wienhold;D. Borodin;S. Brezinsek;S. Droste;T. Hirai;A. Kirschner;A. Litnovsky;V. Philipps;A. Pospieszczyk;U. Samm;O. Schmitz;G. Sergienko
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文献类型：
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作者：
A. Kreter;P. Wienhold;D. Borodin;S. Brezinsek;S. Droste;T. Hirai;A. Kirschner;A. Litnovsky;V. Philipps;A. Pospieszczyk;U. Samm;O. Schmitz;G. Sergienko
在欧姆放电过程中，13 CH 4通过覆盖有石墨、钨或钼板的屋顶状测试限制器中的孔注入。沉积图案的演变进行了研究，在每个等离子体脉冲的原位反射。每次射击中局部沉积的13 C和共沉积的背景12 C的量在死后确定。13 C沉积效率在0.05-0.2%之间，随12 C含量的增加而增加。对于相同的12 C含量，钨的效率为0.11%，钼为0.14%，石墨为0.17%。
13CH4was injected through an aperture in a roof-like test limiter covered by a graphite, tungsten or molybdenum plate during Ohmic discharges. The evolution of the deposition pattern was studied by in situ reflectometry during each plasma pulse. Amounts of locally deposited13C and co-deposited background12C in each shot were determined post-mortem. The13C deposition efficiency is in a range of 0.05–0.2% and grows with the increasing amount of12C. For the same12C content the efficiency is of 0.11% for tungsten, 0.14% for molybdenum and 0.17% for graphite.