论文标题
库仑的库仑膨胀，非中性rubidium等离子体
Coulomb Expansion of Cold Non-Neutral Rubidium Plasma
论文作者
论文摘要
我们研究了冷的非中性离子等离子体向真空的扩展。血浆由磁陷阱（MOT）中的冷rubium原子制成，并通过紫外线光电离子形成。我们采用时间延迟的血浆提取和成像在位置和时间敏感的微通信板检测器上分析血浆。我们报告血浆冲击壳的形成和持久性，等离子体中的成对相关性以及外部场诱导的血浆聚焦效应。我们还开发了轨迹和流体描述，以模拟数据并获得进一步的见解。模拟验证了冲击外壳和相关性的形成，并允许我们建模时间和位置依赖性密度，温度和库仑耦合参数，$γ（{\ bf {r}}，t）$。该分析都重申了电击壳的存在，并验证了实验性血浆是否强烈耦合。
We study the expansion of a cold, non-neutral ion plasma into the vacuum. The plasma is made from cold rubidium atoms in a magneto-optical trap (MOT) and is formed via ultraviolet photoionization. We employ time-delayed plasma extraction and imaging onto a position- and time-sensitive micro-channel plate detector to analyze the plasma. We report on the formation and persistence of plasma shock shells, pair correlations in the plasma, and external-field-induced plasma focusing effects. We also develop trajectory and fluid descriptions to model the data and to gain further insight. The simulations verify the formation of shock shells and correlations, and allow us to model time- and position-dependent density, temperature, and Coulomb coupling parameter, $Γ({\bf{r}},t)$. This analysis both reaffirms the presence of shock shells and verifies that the experimental plasma is strongly coupled.
