Abstract

The results of studying the propagation of plasma flows in the surrounding medium performed on the PF-3 plasma focus facility in the laboratory simulation of astrophysical jets from young stellar objects are presented. The modes with the plasma formations which retain their compactness when propagated over significant distances are obtained. The decrement of the flow’s deceleration as a result of its interaction with the background gas is determined. A technique is developed for estimating the plasma temperature by the ratio of radiation intensities from various parts of the spectrum. It is shown that the background gas is heated by the flow radiation, which leads to a change in its ionization state. Thus, the plasma flow propagates not in a neutral gas but in a weakly ionized plasma.

中文翻译：

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在背景等离子体中等离子体焦点放电中产生的等离子体流的传播

摘要

提出了在PF-3等离子体聚焦设备上对来自年轻恒星物体的天体物理射流进行实验室模拟时研究等离子体流在周围介质中传播的结果。获得具有等离子体形成的模式，当在相当远的距离上传播时，这些模式保持其紧凑性。确定由于与背景气体相互作用而导致的流量减速度的减小。开发了一种用于通过光谱各个部分的辐射强度之比估算等离子体温度的技术。示出了背景气体被流动辐射加热，这导致其电离状态的改变。因此，等离子体流不是在中性气体中传播，而是在弱电离的等离子体中传播。