Development of analysis method for ultra micro chemical species using by ion trap.

开发利用离子阱的超微量化学物质分析方法。

• 批准号: 07640758
• 负责人: SUEKI Keisuke
• 金额: $ 1.28万
• 依托单位: TOKYO METROPOLITAN UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07640758/
• 关键词: RF ion trap; cylinder shape cell; radioisotope; ionization; イオントラップ; 化学種

The work makes RF ion trap which can be used for a radioactive isotope, the radioisotope is traped in ion trap cell and the analysis device to combine the radioactive measurement and the time of flight mass analysis. It began with the purpose of doing research about trap of the radioactive isotope. It got an ion by using cell of the cylinder shape type as ion trap and introducing gas with the heat ion source which firament was used as for the ion source which made it work as RF ion trap. The foundation research was found to insert Ar and N_2 gas. As the beginning was expected, the life as ion trap of cylinder shape cell was short with about 6 musec. The trap efficiency became about 10^<-3> from the examination of the efficiency about ion trap. Besides, only the efficiency of about 10^<-5> showed the introduction of the ion from the outside of cell about ionization with the heat thermal ion source. Before it was very difficult that there are ionization and introduction to cell, it was not reached an actually experiment with a especially radioactive isotope from these results. The development of system wants that the ion trap cell is only introduced the purpose material (the radioisotope) without the carrier gas and an ionization.

本工作制作了可用于放射性同位素的射频离子阱，将放射性同位素捕获在离子阱室和分析装置中，将放射性测量和飞行时间质量分析联合收割机结合起来。它始于对放射性同位素陷阱的研究。它是以圆柱形槽为离子阱，以火焰为离子源的热离子源通入气体，得到离子，使其作为射频离子阱工作。在此基础上，进行了充入Ar、N_2气体的研究。正如开始时所预期的，圆柱形电池作为离子阱的寿命很短，约为6 μ sec。从离子阱的效率的检查来看，阱效率变为约10 μ m<-3>。此外，只有约10^的效率<-5>显示了从细胞外部引入的离子与热热离子源的电离有关。在此之前，电离和引入细胞是非常困难的，从这些结果来看，还没有达到一个实际的实验，特别是放射性同位素。系统的发展要求在离子阱中只引入目的物质（放射性同位素）而不引入载气和电离。