New Mechanism for Enhancing Ash Removal Efficiency and Reducing Tritium Inventory

作     者：李承跃 邓柏权 严建成 

作者机构：School of Physical Electronics University of Electronic Science and Technology of China Chengdu 610054 Southwestern Institute of Physics PO Box 432 Chengdu 610041 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2007年第24卷第1期

页      面：155-157页

核心收录：

学科分类：07[理学] 070203[理学-原子与分子物理] 0702[理学-物理学] 

主　　题：PARTICLES TRITIUM PONDEROMOTIVE force IONS 

摘      要：A new mechanism is suggested to suppress ash particle back streams in the divertor region of our fusion experimental breeder （FEB） reactor for enhancing the ash removal efficiency and reducing the tritium inventory by applications of the nonlinear effect of high power rf ponderomotive force potential which reflects the platereleased and re-ionized He^＋ back to the plate. Meanwhile, the potential does not hinder α particles, which are coming from scraping of the layer, flowing to the target plate. However, it does stop tritium ions flowing to the target. Based on the FEB design parameters, our calculations have shown that the ash removal efficiency can be improved by as much as 40% if the parallel component of rf field 150-200 V/cm is applied to the location at a perpendicular distance L = 20 cm apart from the plate and the plate-recycling neutral helium atom energy is＇ about 0.75eV, at the same time, the tritium inventory can be reduced to some extent.