Observations of systematic spatial modulation of low-Z impurity radiative emissions are analysed for Tore Supra ergodic divertor discharges limited on the inner wall. Some similarities to modulations previously observed with Marfe-like conditions are observed, but significant differences are also seen in the cases studied here. A simulation of the modulations is made, using the three-dimensional edge transport code BBQ. The simulations suggest that an important role is played by charge exchange with neutral deuterium, in addition to the ergodic divertor-induced modulations of the electron temperature. The interpretation highlights the important role of intermediate-Z states in impurity transport processes.
低Z杂质辐射的系统性空间调制观测，是在内壁限制的托卡马克超导托卡马克（Tore Supra）人体工学偏滤器（ergodic divertor）放电中进行的。与先前在类马氏（Marfe-like）条件下观测到的调制存在一些相似之处，但在本研究所考察的案例中，也观察到了显著差异。利用三维边缘输运代码BBQ对上述调制进行了模拟。模拟结果表明，除了人体工学偏滤器引起的电子温度调制外，与中性氘的电荷交换过程也发挥了重要作用。这一解释凸显了中间价态（intermediate-Z）离子在杂质输运过程中的关键作用。