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Spatial charge and compensation method in a whirler

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Plasma Science and Technology 2017年第5期19卷 85-90页

作者：王振宇江滨浩严禹明赵海龙 n a strokin Department of Electrical Engineering Harbin Institute of TechnologyHarbin 150001People's Republic of China Irkutsk State Technical University Irkutsk664074Russia

Based on particle-in-cell simulation, we studied the motions of ions and electrons. The results have shown that electrons are bounded by a magnetic field and only a small number of electrons can pass through the whirler channel. The plasma becomes non-neutral when it is emitted from the whirler, and the spatial charge leads to a beam divergence, which is unfavorable for mass separation. In order to compensate the spatial charge, a cathode is designed to transmit electrons and the quasi-neutral plasma beam. Experiment results have demonstrated that the auxiliary cathode can obviously improve the compensation degree of the spatial charge.

关键词： plasma mass separator whirler spatial charge compensation method PIC

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

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Plasma Science and Technology 2018年第3期20卷 95-105页

作者： V M BARDAKOV S D IVAnOV A V KAZAnTSEV n a strokin A n STUPIn Binhao JIAnG Zhenyu WAnG Irkutsk State Transport University Chernyshevsky Str.15664074IrkutskRussia national Research Irkutsk Technical University Lermontova Str.83664074IrkutskRussia Department of Electrical Engineering Harbin Institute of TechnologyHarbin 150001People's Republic of China

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 *** charged argon ions were accelerated most effectively in the case of the largest discharge currents and pressure P of the working *** ions with W〉eV_(d)(e being the electron charge)were only recorded at maximum *** nitrogen was not accelerated to energies W〉e V_(d).Anomalous acceleration is realized in the range of radial magnetic fields on the anode 2.8×10^(–2)≤B_(rA)≤4×10^(–2)*** was also found analytically that the cathode of the accelerator can receive anomalously accelerated *** this case,the value of the potential in the anodic layer becomes higher than the anode potential,and the anode current exceeds some critical *** modeling in terms of the developed theory showed qualitative agreement between modeling data and measurements.

关键词： plasma sources particle orbit and trajectory particle measurements

Results of the Main Phase of Ion Separation in the Process of Plasma-Optical Mass Separation

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Plasma Science and Technology 2015年第10期17卷 862-868页

作者： V.M.BARDAKOV S.D.IVAnOV A.V.KAZAnTSEV n.A.strokin Institute for Physics and Technology Irkutsk State Technical University

This paper presents separation results of a mixture of nitrogen, argon and krypton ions in the process of plasma-optical mass separation on the POMS-E-3 separator model. We determined the behavior of the separation with a change in the value of magnetic field induction in the azimuthator and in the degree of compensation of the spatial charge in ion flows. An analysis is performed for experimental data by correlation with the results of a theoretical study and numerical experiments. The objectives of future experiments are outlined.

关键词： plasma-optical mass separation plasma accelerator trajectories spatial charge