Maekawa T, Kobayashi T, Yamaguchi S, Yoshinaga K, Igami H, Uchida M, Tanaka H, Asakawa M, Terumichi Y
Graduate School of Energy Science, Kyoto University, Kyoto 606-8502, Japan.
Phys Rev Lett. 2001 Apr 23;86(17):3783-6. doi: 10.1103/PhysRevLett.86.3783.
Extraordinary (X) waves are perpendicularly injected for electron Bernstein (B) wave heating into an Ohmically heated plasma from the inboard side in the WT-3 tokamak. Measurements show that absorption does not take place at the electron cyclotron resonance layer nor the upper hybrid resonance layer, but does happen midway between them. This is consistent with the ray tracing prediction, i.e., the poloidal field and poloidal inhomogeneity of toroidal field lead the B waves to have a large parallel refractive index N( parallel) (>1), and the B waves are damped away via the Doppler-shifted cyclotron resonance.
在WT - 3托卡马克装置中，从内侧向欧姆加热等离子体垂直注入 extraordinary (X) 波以进行电子伯恩斯坦 (B) 波加热。测量结果表明，吸收并非发生在电子回旋共振层或上混合共振层，而是发生在它们之间的中间位置。这与射线追踪预测结果一致，即极向场和环向场的极向不均匀性导致B波具有较大的平行折射率N(平行) (>1)，并且B波通过多普勒频移的回旋共振而被衰减。
