A plasma gun for forming a plasma stream in the open magnetic mirror trap with additional helicoidal field SMOLA is described. The plasma gun is an axisymmetric system with a planar circular hot cathode based on lanthanum hexaboride and a hollow copper anode. The two planar coils are located around the plasma source and create a magnetic field of up to 200 mT. The magnetic field forms the magnetron configuration of the discharge and provides a radial electric insulation. The source typically operates with a discharge current of up to 350 A in hydrogen. Plasma parameters in the SMOLA device are Ti ~ 5 eV, Te ~ 5–40 eV and ni ~ (0.1–1) × 1019 m−3. Helium plasma can also be created. The plasma properties depend on the whole group of initial technical parameters: the cathode temperature, the feeding gas flow, the anode-cathode supply voltage and the magnitude of the cathode magnetic insulation.

中文翻译：

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用于 SMOLA 螺旋镜的长脉冲等离子源

描述了一种等离子枪，用于在具有附加螺旋场 SMOLA 的开放式磁镜陷阱中形成等离子流。等离子枪是一个轴对称系统，具有基于六硼化镧的平面圆形热阴极和空心铜阳极。两个平面线圈位于等离子体源周围，可产生高达 200 mT 的磁场。磁场形成放电的磁控管配置并提供径向电绝缘。该源通常在氢气中以高达 350 A 的放电电流运行。SMOLA 装置中的等离子体参数为吨一世~ 5 eV,吨e~ 5–40 eV 和n一世~ (0.1–1) × 1019米-3. 也可以产生氦等离子体。等离子体特性取决于整组初始技术参数：阴极温度、进料气体流量、阳极-阴极电源电压和阴极磁绝缘的大小。