等离子体-中性流体相互作用模型及其在磁化马歇尔炮中CT形成研究中的应用
A model for plasma-neutral fluid interaction and its application to a study of CT formation in a magnetised Marshall gun
摘要：
等离子体/中性流体相互作用的模型的开发，并包括在DELiTE代码框架实现的非线性MHD方程。离子，电子和中性流体的动量和能量，由于电离和复合的源率推导出使用一个简单的方法，使确定的体积率的热能转移从电子到光子和中性粒子的辐射复合反应。这个量不能用标准的形式化的程序来计算，在其他的研究中被忽略了。等离子体/中性流体相互作用模型被应用于研究CT形成SMRT和SPECTOR磁化马歇尔枪，使澄清CT电子密度显着增加，经常观察到的SPECTOR实验形成后的机制。中性气体，它仍然集中在下面的气体阀门后，CT的形成，扩散了枪筒的CT容纳区域，在那里它被电离，导致观察到的电子密度增加。这种理解有助于解释在SPECTOR上进行的电极边缘偏置实验期间观察到的温度异常显著升高和密度显著降低。人们认为，边缘加燃料障碍（偏置诱导的传输障碍的结果）是导致观察到的温度升高和密度降低的主要原因。
英文摘要：
A model for plasma/neutral fluid interaction was developed and included in the DELiTE code framework implementation of non-linear MHD equations. The source rates of ion, electron and neutral fluid momentum and energy due to ionization and recombination are derived using a simple method that enables determination of the volumetric rate of thermal energy transfer from electrons to photons and neutral particles in the radiative recombination reaction. This quantity can not be evaluated with the standard formal procedure of taking moments of the relevant collision operator, and has been neglected in other studies. The plasma/neutral fluid interaction model was applied to study CT formation in the SMRT and SPECTOR magnetized Marshall guns, enabling clarification of the mechanisms behind the significant increases in CT electron density that are routinely observed well after formation on the SPECTOR experiment. Neutral gas, which remains concentrated below the gas valves after CT formation, diffuses up the gun barrel to the CT containment region where it is ionized, leading to the observed electron density increases. This understanding helps account for the exceptionally significant increase in temperature, and markedly reduced density, observed during the electrode edge biasing experiment conducted on SPECTOR. It is thought that edge fueling impediment, a consequence of a biasing-induced transport barrier, is largely responsible for the observed temperature increase and density decrease.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
