摘要
In this work, we performed first-principles electromagnetic-kinetic simulations to study a phased antenna array and its interaction with deuterium plasmas within the lower hybrid range of frequency. We first gave wave accessibility and resonance results, which agree well with theoretical prediction. In addition, we further investigated the antenna power spectrum with different antenna phases in the presence of the plasma and compared it with that in a vacuum,which directly indicates wave coupling and plasma absorption. Furthermore, for the case with zero phasing difference, our simulation results show that, albeit the launch is away from the accessibility region, tunneling effect and mode conversion occurred, which enhanced coupling and absorption. Moreover, consistent interactions between the injected wave and the plasma concerning various antenna phase differences are shown. We presented the inchoate response of the plasma in terms of the launching directions. Our results could be favorable for the engineering design of wave heating experiments with a tunable phased antenna array in linear devices, such as simple magnetic mirrors or tandem mirrors.
作者
Guanghui ZHU
Qing LI
Xuan SUN
Jianyuan XIAO
Jiangshan ZHENG
Hang LI
朱光辉;李清;孙玄;肖建元;郑江山;李航(College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen 518060,People's Republic of China;School of Nuclear Science and Technology,University of Science and Technology of China,Hefei 230026,People's Republic of China;School of Physics,Beihang University,Beijing 100191,People's Republic of China)
基金
supported by the National Key R&D Program of China (No. 2017YFE0301802)
National Natural Science Foundation of China (Nos. 11905220, 11775219 and 12175226)。
