带金属氢化物阴极的潘宁放电负空间电荷阳极层释放氢负离子

I. Sereda, Y. Hrechko, M. Azarenkov
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摘要

本论文讨论了通过在带金属氢化物阴极的潘宁放电等离子体中形成的负空间电荷沿轴向排出氢负离子的方法。等离子体是在氢气上产生的,氢气储存在金属氢化物阴极中,由于等离子体的离子流冲击,在没有任何外部气体供应的情况下就地注入放电池。非平衡解吸过程导致了氢分子的高振动激发,从而大大提高了氢离子的产生效率。高效驱逐 H 离子的方法取决于外部磁场。在高磁场下,通过提供反向阴极的负电偏压来实现,但在低磁场下,H 离子被阳极层的负空间电荷推向轴心。这两种方法在直流放电和脉动放电情况下都有影响。
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Expulsion of hydrogen negative ions by the anode layer of negative space charge from Penning discharge with metal hydride cathodes
The method of expulsion of hydrogen negative ions in the axial direction by a negative space charge formed in the plasma of Penning discharge with metal hydride cathodes is discussed. The plasma is produced on hydrogen, which is stored in metal hydride cathodes and injected locally into the discharge cell without any external gas supply due to ion current impact from plasma. The process of nonequilibrium desorption resulted in high vibrational excitation of H2 molecules, which greatly increases the efficiency of H− ion production. The method of efficient expulsion of H− ions depends on the external magnetic field. At a high magnetic field, it is performed by the supply of negative electric bias of the opposite cathode, but at a low one, H− ions are pushed out by the negative space charge of the anode layer, which expands toward the axis. The impact of both methods is considered in the case of DC discharge and in pulsating regime implementation.
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