论文标题
从激光消融中的thor和ytterbium离子陷阱的研究研究
Studies of thorium and ytterbium ion trap loading from laser ablation for gravity monitoring with nuclear clocks
论文作者
论文摘要
thor的紧凑和健壮的离子陷阱是基于Thorium-229核中低能的同构转变的下一代原子钟的技术。我们的目标是在射频电磁线性Paul Trap中的单三位电离th trap的激光消融载荷。离子的检测是基于修饰的质谱仪和具有单离子灵敏度的通道。在这项研究中，我们成功地创建了和检测到血浆羽流中的232th+和232th2+离子，研究了它们的产量演化，并将载荷与YB的四极离子陷阱进行了比较。我们探讨了对未来低成本229th3+捕获的激光消融加载的可行性。 th骨消融产率显示出强大的耗竭，这表明我们从表面上消融的氧化物层，而离子是血浆羽状演化和碰撞的结果。我们的结果与其他元素及其氧化物的类似实验非常吻合。
Compact and robust ion traps for thorium are enabling technology for the next generation of atomic clocks based on a low-energy isomeric transition in the thorium-229 nucleus. We aim at a laser ablation loading of single triply ionized thorium in a radio-frequency electromagnetic linear Paul trap. Detection of ions is based on a modified mass spectrometer and a channeltron with single-ion sensitivity. In this study, we successfully created and detected 232Th+ and 232Th2+ ions from plasma plumes, studied their yield evolution, and compared the loading to a quadrupole ion trap with Yb. We explore the feasibility of laser ablation loading for future low-cost 229Th3+ trapping. The thorium ablation yield shows a strong depletion, suggesting that we have ablated oxide layers from the surface and the ions were a result of the plasma plume evolution and collisions. Our results are in good agreement with similar experiments for other elements and their oxides.
