Cornejo J M, Colombano M, Doménech J, Block M, Delahaye P, Rodríguez D
Departamento de Física Atómica, Molecular y Nuclear, Universidad de Granada, 18071 Granada, Spain.
GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany.
Rev Sci Instrum. 2015 Oct;86(10):103104. doi: 10.1063/1.4932310.
A special ion trap was initially built up to perform β-ν correlation experiments with radioactive ions. The trap geometry is also well suited to perform experiments with laser-cooled ions, serving for the development of a new type of Penning trap, in the framework of the project TRAPSENSOR at the University of Granada. The goal of this project is to use a single (40)Ca(+) ion as detector for single-ion mass spectrometry. Within this project and without any modification to the initial electrode configuration, it was possible to perform Doppler cooling on (40)Ca(+) ions, starting from large clouds and reaching single ion sensitivity. This new feature of the trap might be important also for other experiments with ions produced at radioactive ion beam facilities. In this publication, the trap and the laser system will be described, together with their performance with respect to laser cooling applied to large ion clouds down to a single ion.
最初构建了一种特殊的离子阱，用于对放射性离子进行β-ν关联实验。该阱的几何结构也非常适合用于激光冷却离子的实验，这是格拉纳达大学TRAPSENSOR项目框架内新型彭宁阱开发工作的一部分。该项目的目标是使用单个（40）Ca（+）离子作为单离子质谱的探测器。在这个项目中，无需对初始电极配置进行任何修改，就能够从大离子云开始对（40）Ca（+）离子进行多普勒冷却，并达到单离子灵敏度。这种离子阱的新特性对于在放射性离子束设施中产生的离子的其他实验可能也很重要。在本出版物中，将描述该离子阱和激光系统，以及它们在将大离子云激光冷却至单个离子方面的性能。
