Electron cyclotron resonance heating in a short cylindrical plasma system

Pramana

D Bora1¹  Vipin K Yadav1¹ 

[1] Institute for Plasma Research, Bhat, Gandhinagar 382 428, India$$

关键词: X-wave;    electron cyclotron resonance;    upper hybrid reonance.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

Electron cyclotron resonance (ECR) plasma is produced and studied in a small cylindrical system. Microwave power is delivered by a CW magnetron at 2.45 GHz in TE10 mode and launched radially to have extraordinary (X) wave in plasma. The axial magnetic field required for ECR in the system is such that the first two ECR surfaces (𝐵 = 875.0 G and 𝐵 = 437.5 G) reside in the system. ECR plasma is produced with hydrogen with typical plasma density 𝑛e as 3.2 × 1010 cm-3 and plasma temperature 𝑇e between 9 and 15 eV. Various cut-off and resonance positions are identified in the plasma system. ECR heating (ECRH) of the plasma is observed experimentally. This heating is because of the mode conversion of X-wave to electron Bernstein wave (EBW) at the upper hybrid resonance (UHR) layer. The power mode conversion efficiency is estimated to be 0.85 for this system. The experimental results are presented in this paper.

【 授权许可】

Unknown