标题： 高电荷离子在一维单式彭宁陷阱中的捕获与隔离 显示英文标题

标题： Capture and isolation of highly-charged ions in a unitary Penning trap

摘要： 我们最近使用了一个紧凑型潘宁阱来捕获和分离从美国国家标准与技术研究院（NIST）的电子束离子阱（EBIT）提取的高度电离离子。以高达$4\times 10^3\,Q$eV 的能量提取的完全电荷状态为$Q \geq 10$的高度剥离氩离子和氖离子被捕获到一个阱深为$\,\approx (4\, {\rm to}\, 12)\,Q$eV 的陷阱中。在这里，我们详细讨论了在单位潘宁阱中优化高度电离离子的速度调节、捕获和存储的过程，该陷阱被设计为便于径向访问原子束或激光束，用于电荷交换或光谱学实验，例如对单电子离子的里德堡态或多重电荷离子的亚稳态光学跃迁的研究。在接近最佳条件下，这种稀土元素潘宁陷阱中捕获和隔离的离子可以通过初始能量分布来表征，该分布比通常在EBIT中发现的窄约$\approx$倍。这种热能的减少是被动获得的，在离子捕获陷阱中没有应用任何主动冷却方案。 显示英文摘要

摘要： We recently used a compact Penning trap to capture and isolate highly-charged ions extracted from an electron beam ion trap (EBIT) at the National Institute of Standards and Technology (NIST). Isolated charge states of highly-stripped argon and neon ions with total charge $Q \geq 10$, extracted at energies of up to $4\times 10^3\,Q$ eV, are captured in a trap with well depths of $\,\approx (4\, {\rm to}\, 12)\,Q$ eV. Here we discuss in detail the process to optimize velocity-tuning, capture, and storage of highly-charged ions in a unitary Penning trap designed to provide easy radial access for atomic or laser beams in charge exchange or spectroscopic experiments, such as those of interest for proposed studies of one-electron ions in Rydberg states or optical transitions of metastable states in multiply-charged ions. Under near-optimal conditions, ions captured and isolated in such rare-earth Penning traps can be characterized by an initial energy distribution that is $\approx$ 60 times narrower than typically found in an EBIT. This reduction in thermal energy is obtained passively, without the application of any active cooling scheme in the ion-capture trap.