Reversal of radial glow distribution in helicon plasma induced by reversed magnetic field

Y WANG (王宇); G ZHAO (赵高); C NIU (牛晨); Z W LIU (刘忠伟); J T OUYANG (欧阳吉庭); Q CHEN (陈强)

doi:10.1088/2058-6272/19/2/024003

Plasma Science and Technology > 2017 > 19(2): 24003-024003. > DOI: 10.1088/2058-6272/19/2/024003

Y WANG (王宇), G ZHAO (赵高), C NIU (牛晨), Z W LIU (刘忠伟), J T OUYANG (欧阳吉庭), Q CHEN (陈强). Reversal of radial glow distribution in helicon plasma induced by reversed magnetic field[J]. Plasma Science and Technology, 2017, 19(2): 24003-024003. DOI: 10.1088/2058-6272/19/2/024003

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Reversal of radial glow distribution in helicon plasma induced by reversed magnetic field

1 School of Physics, Beijing institute of technology, Beijing 100081, People’s Republic of China 2 Laboratory of Plasma Physics & Materials, Beijing Institute of Graphic Communication, Beijing 102600, People’s Republic of China

Funds: This study is financially supported by National Natural Science Foundation of China (Nos. 11175024, 11375031, 11505013), BJNSFC (No. KZ201510015014), Beijing Municipal Natural Science Foundation (No. 4162024), State Key Laboratory of Electrical Insulation and Power Equipment (No. EIPE15208) and Beijing municipal coordination innovation program 2011.

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Received Date: June 29, 2016

Graphical Abstract

Abstract

Abstract

In this work, the reversal of radial glow distribution induced by reversed magnetic field is reported. Based on the Boswell antenna which is symmetric and insensitive to the magnetic field direction, it seems such a phenomenon in theory appears impossible. However, according to the diagnostic of the helicon waves by magnetic probe, it is found that the direction of magnetic field significantly affects the propagation characteristic of helicon waves, i.e., the interchange of the helicon waves at the upper and the lower half of tube was caused by reversing the direction of magnetic field. It is suggested that the variation of helicon wave against the direction of magnetic field causes the reversed radial glow distribution. The appearance of the traveling wave does not only improve the discharge strength, but also determines the transition of the discharge mode.
- helicon plasma,
- reversal of radial glow distribution,
- the direction of magnetic field

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References (20)

References

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