Formation of multi-charged ions and plasma stability at quasigasdynamic plasma confinement in a mirror magnetic trap
Formation of multi-charged ions and plasma stability at quasigasdynamic plasma confinement in a mirror magnetic trap
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镜磁阱中准气动力等离子体约束下多带电离子的形成和等离子体稳定性
DOI：
10.1063/1.1150255
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发表时间：
2000
影响因子：
1.6
通讯作者：
V. Zorin
中科院分区：
文献类型：
--
作者：
S. Golubev;S. Razin;V. Semenov;A. Smirnov;A. Vodopyanov;V. Zorin
众所周知，多电荷离子源中等离子体密度的增加导致离子电流的大幅增加，并略微改善了电荷状态上的离子分布。这一说法的有效性在等离子体密度不超过1012 cm−3的几个单位的实验中得到了验证。 在目前的工作中，它是实验证明，电子密度超过1013 cm−3，在陷阱中的等离子体约束的制度显着变化，实现了准等离子体约束的制度。 数值模拟和实验数据的比较表明，等离子体中电子速度分布的各向异性对离子电荷态分布有本质的影响。这允许寻找在等离子体中产生高电荷离子的最佳条件。在这篇文章中，我们还解决了在强微波泵浦下的轴对称镜阱中的等离子体稳定性问题。第一次从稠密等离子体中提取离子的实验...
It is known that an increase in plasma density in sources of multicharged ions leads to a substantial increase of ion current and slightly improves the ion distribution over charge states. The validity of this statement was verified in experiments with plasma densities not exceeding several units of 1012 cm−3. In the present work it is demonstrated experimentally that, for the electron densities exceeding 1013 cm−3, the regime of plasma confinement in a trap changes significantly and the quasigasdynamic regime of plasma confinement is realized. Comparison of numerical simulations and experimental data showed the essential influence of the anisotropy of electron velocity distribution in a plasma on the ion charge state distribution. This allows looking for the optimal conditions for the creation of highly charged ions in plasma. In this article we also address problems of plasma stability in an axisymmetric mirror trap under powerful microwave pumping. First experiments on ion extraction from a dense plasm...