Anomalous acceleration of ions in a plasma accelerator with an anodic layer

V M BARDAKOV; S D IVANOV; A V KAZANTSEV; N A STROKIN; A N STUPIN; Binhao JIANG (江滨浩); Zhenyu WANG (王振宇)

doi:10.1088/2058-6272/aa97cc

Plasma Science and Technology > 2018 > 20(3): 35501-035501. > DOI: 10.1088/2058-6272/aa97cc

V M BARDAKOV, S D IVANOV, A V KAZANTSEV, N A STROKIN, A N STUPIN, Binhao JIANG (江滨浩), Zhenyu WANG (王振宇). Anomalous acceleration of ions in a plasma accelerator with an anodic layer[J]. Plasma Science and Technology, 2018, 20(3): 35501-035501. DOI: 10.1088/2058-6272/aa97cc

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Anomalous acceleration of ions in a plasma accelerator with an anodic layer

1 Irkutsk State Transport University, Chernyshevsky Str., 15, 664074, Irkutsk, Russia 2 National Research Irkutsk Technical University, Lermontova Str., 83, 664074, Irkutsk, Russia 3 Department of Electrical Engineering, Harbin Institute of Technology, Harbin 15000l, People’s Republic of China

Funds: This work was partly supported by a grant ‘Organization of the conduct of research’ code 82 of the Ministry of Education and Science of the Russian Federation.

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Received Date: August 21, 2017

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Abstract

Abstract

In a plasma accelerator with an anodic layer (PAAL), we discovered experimentally the effect of ‘super-acceleration’ of the bulk of the ions to energies W exceeding the energy equivalent to the discharge voltage V_d. The E×B discharge was ignited in an environment of atomic argon and helium and molecular nitrogen. Singly charged argon ions were accelerated most effectively in the case of the largest discharge currents and pressure P of the working gas. Helium ions with W > eV_d (e being the electron charge) were only recorded at maximum pressures. Molecular nitrogen was not accelerated to energies W > eV_d. Anomalous acceleration is realized in the range of radial magnetic fields on the anode 2.8×10^–2 ≤ B_rA≤ 4×10^–2 T. It was also found analytically that the cathode of the accelerator can receive anomalously accelerated ions. In this case, the value of the potential in the anodic layer becomes higher than the anode potential, and the anode current exceeds some critical value. Numerical modeling in terms of the developed theory showed qualitative agreement between modeling data and measurements.
- plasma sources,
- particle orbit and trajectory,
- particle measurements

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References (48)

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