Measurement and control of multi-charged ions for the miniaturization of ECR ion sources

我们已经开发了用于工业的电子回旋共振离子源(ECRIS)。在这个项目中，我们设定了一个目标，为ECRIS的小型化技术提供指导。我们已经报道了一些新的ECRIS的实验和设计。(1)我们采用气体混合技术冷却等离子体，从而减少富勒烯的解离。用法拉第杯观测了富勒烯-He、Ar、Xe混合等离子体中引出的离子束的质谱图。氦气混合技术是防止富勒烯破坏的有效方法。(2)为提高多电荷离子的生产效率，我们设计了一种新的离子源。设计了一种以永磁体为主的最小B磁场。(3)用低能铁离子束辐照C60薄膜。用高效液相色谱和激光解吸电离飞行时间质谱仪对辐照后的C60薄膜进行了分析。因此，我们可以合成一种新型的Fe-C_(60)配合物。

We have developed electron cyclotron resonance ion sources (ECRIS) for industrial use. In this project, we set a goal to provide guidelines for miniaturization technology of ECRISs. We have reported some experiments and design of a new ECRIS. (1) We have adopted gas-mixing techniques to cool the plasma and then reduce fullerene dissociation. Mass spectra of ion beams extracted from fullerene-He, Ar or Xe mixed plasmas were observed with a Faraday cup. The He gas mixing technique is effective against fullerene destruction. (2) We have designed a new ion source for improvement of production efficiency of multi-charged ions. A minimum-B magnetic field was designed using mainly permanent magnets. (3) A low energy Fe+ ion beam was irradiated to C60 thin film. Fe+-irradiated C60 thin film was analyzed by high performance liquid chromatography and laser desorption/ionization time-of-flight mass spectrometry. As a result, we could synthesize the Fe + C60 complex as a new material.