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FLUX DEPENDENCE AND ISOTOPE EFFECT OF THE CHEMICAL EROSION OF CARBON UNDER TOKAMAK CONDITIONS

机译：托卡马克条件下碳化学侵蚀的通量依赖性和同位素效应

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Chemical erosion of carbon is investigated in the outer Divertor II of the ASDEX Upgrade tokamak for ion fluxrndensities up to 10~(23) m~(-2) s~(-1) and up to reactor-relevant values of the power per major plasma radius, P/R ≤ 12rnMW/m. Surface temperatures are relatively low and do not exceed 100 ℃ at the position of the measurements.rnThe erosion yields calculated from CH molecular line emission exhibit a pronounced hydrogen flux dependencernand an isotope effect, resulting in lower yields for higher fluxes and a factor of 2 higher yields for deuteriumrnin comparison to hydrogen. Corresponding yields derived from carbon ion lines corroborate these results. Thernobserved parameter dependences of the chemical erosion yields can be described with the analytical model ofrnRoth and Garcia-Rosales, Nucl. Fusion 36 (1996), if an additional, empirical time constant for the hydrogenationrnprocess is introduced.

机译：在ASDEX升级版托卡马克的外部Divertor II中研究了碳的化学侵蚀，其离子通量密度高达10〜（23）m〜（-2）s〜（-1），并且高达与反应堆相关的每主功率值等离子半径，P / R≤12rnMW / m。表面温度相对较低，在测量位置处不超过100℃。rn由CH分子线发射计算得出的腐蚀产率表现出明显的氢通量依赖性和同位素效应，导致较高通量时产率较低，而较高通量则为2倍与氢相比，氘rn的产率。来自碳离子线的相应产率证实了这些结果。化学侵蚀产量的热力学参数依赖性可以用rnRoth and Garcia-Rosales，Nucl的分析模型来描述。 Fusion 36（1996），如果引入了氢化过程的附加经验时间常数。

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来源
《Fusion energy 1998》|1998年|p.1-4|共4页
会议地点 Yokohama(JP)
作者
A. KALLENBACH; A. BARD; K. KRIEGER; J. ROTH; U. WENZEL;
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Max-Planck-Institut für Plasmaphysik, EURATOM Association, D-85748 Garching and Berlin;

rnMax-Planck-Institut für Plasmaphysik, EURATOM Association, D-85748 Garching and Berlin;

rnMax-Planck-Institut für Plasmaphysik, EURATOM Association, D-85748 Garching and Berlin;

rnMax-Planck-Institut für Plasmaphysik, EURATOM Association, D-85748 Garching and Berlin;

rnMax-Planck-Institut für Plasmaphysik, EURATOM Association, D-85748 Garching and Berlin;

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中图分类受控热核反应（聚变反应理论及实验装置）;
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1. Evidence for hydrogen flux dependence of the apparent chemical erosion yield of graphite under high flux conditions [J] . A.Kallenbach, A.Thoma, A.Bard Nuclear fusion . 1998,第7期

机译：高通量条件下石墨的表观化学侵蚀量与氢通量的相关性证据
2. Density functional study of chemical erosion mechanisms in carbon and boron-doped carbon as plasma facing material in tokamaks [J] . Ferro Y., Marinelli F., Allouche A., Journal of Nuclear Materials: Materials Aspects of Fission and Fusion . 2003,第2a3期

机译：托卡马克中作为等离子体材料的碳和掺硼碳中化学腐蚀机理的密度泛函研究
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5. Weathering and geochemical fluxes in the Canadian Cordillera: Evidence from major elements, rare earth elements, mercury, and carbon and sulphur isotopes in the Fraser, Skeena and Nass Rivers. [D] . Spence, Jody. 2005

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7. Hydrocarbon injection for quantification of chemical erosion yields in tokamaks [O] . Brezinsek, S., Pospieszczyk, A., Groth, M., 2007

机译：注入烃以定量测定托卡马克中的化学侵蚀量
8. High heat flux erosion of carbon fibre composite materials in the TEXTOR tokamak. [R] . Hassanein, A. 1998

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FLUX DEPENDENCE AND ISOTOPE EFFECT OF THE CHEMICAL EROSION OF CARBON UNDER TOKAMAK CONDITIONS

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