Vacuum electric field created by microwaves inside magnetic confinement devices
Vacuum electric field created by microwaves inside magnetic confinement devices
复制标题
磁约束装置内微波产生的真空电场
DOI：
10.1088/0029-5515/43/11/014
复制
发表时间：
2003
期刊：
影响因子：
3.3
通讯作者：
F. Castejón
中科院分区：
文献类型：
--
作者：
A. Cappa;F. Castejón
微波功率注入真空容器内产生的电场的知识是理解二次谐波ECRH等离子体击穿磁约束装置的基础。在这封信中描述的简单的光子模型允许确定电场假设一个均匀的和稳定的能量密度状态是在波注入后的第一个纳秒达到。根据二次谐波击穿理论，实现击穿的最大预充压力的测量允许间接确定所需的电场强度。在HSX上进行的实验表明，用这种方法得到的场值与用模型计算得到的场值吻合得很好。
The knowledge of the electric field created by microwave power injected inside the vacuum vessel is fundamental to understand second harmonic ECRH plasma breakdown in magnetic confinement devices. The simple photon model described in this letter allows to determine the electric field assuming that a homogeneous and stationary energy density state is reached during the first nanoseconds after the wave injection. According to second harmonic breakdown theory, the measurement of the maximum prefill pressure for which breakdown is achieved allows an indirect determination of the required electric field strength. Experiments performed in HSX show that the field value obtained in this way is in very good agreement with the value calculated with the model.