Measurements of net erosion and redeposition of molybdenum in DIII-D
Measurements of net erosion and redeposition of molybdenum in DIII-D
复制标题
DOI：
10.1016/j.jnucmat.2013.01.178
复制
发表时间：
2013-07
影响因子：
3.1
通讯作者：
W. Wampler;P. Stangeby;J. Watkins;D. Buchenauer;D. Rudakov;C. Wong
中科院分区：
文献类型：
--
作者：
W. Wampler;P. Stangeby;J. Watkins;D. Buchenauer;D. Rudakov;C. Wong
在DIII-D托卡马克装置中偏滤器等离子体对钼的净侵蚀是由薄膜测试样品在短时间暴露于良好控制的等离子体条件后厚度的减少确定的。还测量了沉积在相邻碳表面上的Mo的空间分布。整合的总量的Mo沉积在2厘米的源，给出了只有19%的量损失的膜表明，大部分的Mo被运输到更大的距离，尽管短的路径长度的电离的Mo偏滤器等离子体。这些测量为总侵蚀量和净侵蚀量之间的比较以及侵蚀和沉积的测量和模拟之间的比较提供了基准数据，这些数据将在本次会议的配套文件中讨论。腐蚀和碳的沉积，和氘滞留也进行了检查。
The net erosion of molybdenum by the divertor plasma in the DIII-D tokamak was determined from the reduction in thickness of a thin film test sample after a short exposure to well controlled plasma conditions. The spatial distribution of Mo deposited on adjacent carbon surfaces was also measured. Integration of the total quantity of Mo deposited within 2cm of the source, gave only 19% of the amount lost from the film indicating that most of the Mo is transported to greater distances, in spite of the short pathlength for ionization of Mo in the divertor plasma. These measurements provide benchmark data for comparisons between gross and net erosion and between measurements and simulations of erosion and deposition, which are discussed in companion papers at this conference. Erosion and deposition of carbon, and deuterium retention were also examined.