Cold highly charged ions in a cryogenic Paul trap
Cold highly charged ions in a cryogenic Paul trap
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低温保罗陷阱中的冷高电荷离子
DOI：
10.1007/s10751-013-0806-9
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发表时间：
2013
影响因子：
--
通讯作者：
José R. Crespo López
中科院分区：
文献类型：
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作者：
O. Versolato;M. Schwarz;A. Windberger;J. Ullrich;P. Schmidt;M. Drewsen;José R. Crespo López
高电荷离子（HCI）中的窄光跃迁对于计量学和基础物理学特别感兴趣，利用HCI对新物理的高灵敏度。对于一个稳定的原子系统预测的精细结构常数变化的最高灵敏度是在Ir17 +中发现的。然而，HCl的激光光谱学受到它们产生和捕获的大温度（约106 K）的阻碍。当HCI在线性Paul阱中冷却到mK范围时，可以获得这种激光光谱的前所未有的改进。我们研制了一个低温线性Paul阱，在这个阱中，HCI将被9Be +离子共振冷却。提供了激光的优化光学接入，同时保持了优异的UHV条件。Paul阱将连接到电子束离子阱（EBIT），该电子束离子阱能够产生各种HCI。该EBIT还将提供确定Ir17 +跃迁能量所需的第一个实验输入，从而能够对这种有前途的HCI进行进一步的激光光谱研究。
Narrow optical transitions in highly charged ions (HCIs) are of particular interest for metrology and fundamental physics, exploiting the high sensitivity of HCIs to new physics. The highest sensitivity for a changing fine structure constant ever predicted for a stable atomic system is found in Ir17 + . However, laser spectroscopy of HCIs is hindered by the large (∼ 106 K) temperatures at which they are produced and trapped. An unprecedented improvement in such laser spectroscopy can be obtained when HCIs are cooled down to the mK range in a linear Paul trap. We have developed a cryogenic linear Paul trap in which HCIs will be sympathetically cooled by 9Be + ions. Optimized optical access for laser light is provided while maintaining excellent UHV conditions. The Paul trap will be connected to an electron beam ion trap (EBIT) which is able to produce a wide range of HCIs. This EBIT will also provide the first experimental input needed for the determination of the transition energies in Ir17 + , enabling further laser-spectroscopic investigations of this promising HCI.