Correlation of the intensity ratio of C2/CH molecular bands with the flux ratio of C2Hy/CH4 particles
Correlation of the intensity ratio of C2/CH molecular bands with the flux ratio of C2Hy/CH4 particles
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DOI：
10.1016/j.jnucmat.2004.10.044
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发表时间：
2005-03
影响因子：
3.1
通讯作者：
U. Fantz;S. Meir
中科院分区：
文献类型：
--
作者：
U. Fantz;S. Meir
聚变实验边缘等离子体中碳材料的化学侵蚀通常用侵蚀产额来量化，即化学侵蚀的碳通量与入射氢通量的比率。碳颗粒通量的一种常见诊断方法是对分子自由基辐射的分析：CH辐射与甲烷颗粒通量的相关性。为了考虑高级碳氢化合物的形成，在实验室等离子体和ASDEX升级的等离子体边缘进行了系统的研究。重点讨论了C{sub2}辐射与C{sub2}H{suby}粒子通量之间的关系。建议用分子辐射比C{sub2}/CH作为监测C{sub2}H{suby}/CH{sub4}粒子通量的工具。从偏滤器气体喷雾得到了相对光子效率。提出了一种简化的碳通量光谱测定公式，该公式考虑了高级烃的形成。
The chemical erosion of carbon materials in the edge plasma of fusion experiments is commonly quantified by the erosion yield, i.e. the ratio of chemically eroded carbon flux to the incident hydrogen flux. A common diagnostic method for the carbon particle flux is the analysis of radiation from molecular radicals: the correlation of CH radiation with methane particle fluxes. In order to take into consideration the formation of higher hydrocarbons systematic investigations in laboratory plasmas and in the plasma edge of ASDEX Upgrade are carried out. Emphasis is laid on a correlation of C{sub 2} radiation with C{sub 2}H {sub y} particle fluxes. It is suggested to use the ratio of the molecular radiation C{sub 2}/CH as a monitor tool for C{sub 2}H {sub y}/CH{sub 4} particle fluxes. From divertor gas puff relative photon efficiencies are obtained. A simplified formula for the spectroscopic determination of carbon fluxes is presented which considers the formation of higher hydrocarbons.