| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Landau damping of electrons with bouncing motion in a radio-frequency plasma |
| Jun Tao(陶军)1,2, Nong Xiang(项农)1,†, Yemin Hu(胡业民)1,‡, and Yueheng Huang(黄跃恒)3,4 |
1 Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China;
2 University of Science and Technology of China, Hefei 230026, China;
3 Advanced Energy Research Center, Shenzhen University, Shenzhen 518060, China;
4 Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China |
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Abstract One-dimensional particle simulations have been conducted to study the interaction between a radio-frequency electrostatic wave and electrons with bouncing motion. It is shown that bounce resonance heating can occur at the first few harmonics of the bounce frequency (nωb,n=1,2,3,...). In the parameter regimes in which bounce resonance overlaps with Landau resonance, the higher harmonic bounce resonance may accelerate electrons at the velocity much lower than the wave phase velocity to Landau resonance region, enhancing Landau damping of the wave. Meanwhile, Landau resonance can increase the number of electrons in the lower harmonic bounce resonance region. Thus electrons can be efficiently heated. The result might be applicable for collisionless electron heating in low-temperature plasma discharges.
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Received: 14 May 2021
Revised: 02 July 2021
Accepted manuscript online: 22 July 2021
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PACS:
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52.50.Qt
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(Plasma heating by radio-frequency fields; ICR, ICP, helicons)
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52.40.-w
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(Plasma interactions (nonlaser))
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52.65.-y
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(Plasma simulation)
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| Fund: Project supported by the National Key Research and Development Program of China (Grant No. 2017YFE0300406) and the National Natural Science Foundation of China (Grant Nos. 11975272, 12075276, 11805133, 11705236, and 11375234). |
Corresponding Authors:
Nong Xiang, Yemin Hu
E-mail: xiangn@ipp.ac.cn;yeminhu@ipp.ac.cn
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Cite this article:
Jun Tao(陶军), Nong Xiang(项农), Yemin Hu(胡业民), and Yueheng Huang(黄跃恒) Landau damping of electrons with bouncing motion in a radio-frequency plasma 2021 Chin. Phys. B 30 125202
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