This paper presents the results of studies of plasma flow parameters on the PF-1000U facility. A distinctive feature of this facility is the ability to create profiled initial gas distributions using gas puffs. In the experiments described, a combined system for filling the vacuum chamber with a working gas was used, in which an additional injection of various gases (deuterium, helium, neon and their mixtures) into the axial region of the chamber prefilled with deuterium was performed using a pulse valve. Thus, both the pinching processes and, accordingly, the generation of axial plasma flows and the conditions of their propagation in the background gas of the facility chamber were affected. Regimes with the generation of compact stable plasma formations propagating over long distances were found. The results obtained can be used in laboratory modelling of astrophysical jets from young stellar objects.

中文翻译：

---

PF-1000U等离子聚焦装置轴向等离子流中的环形磁场特性

本文介绍了在 PF-1000U 设施上研究等离子体流动参数的结果。该设施的一个显着特点是能够使用气体粉扑创建剖面的初始气体分布。在所描述的实验中，使用了一种用工作气体填充真空室的组合系统，其中将各种气体（氘、氦、氖及其混合物）额外注入到预先填充了氘的真空室的轴向区域中。使用脉冲阀。因此，收缩过程和相应的轴向等离子体流的产生以及它们在设施室的背景气体中的传播条件都受到了影响。发现了产生长距离传播的紧凑稳定等离子体形成的机制。