Storage and mass-selective control of ions in an electrostatic ion storage ring
- 作者：S. Jinno ; T. Takao ; K. Hanada ; M. Goto ; K. Okuno ; H. Tanuma ; T. Azuma ; H. Shiromaru
- 关键词：Cyclic accelerator ; Electrostatic storage ring
- 刊名：Nuclear Instruments and Methods in Physics Research Section A ; Accelerators ; Spectrometers ; Detectors and Associated Equipment
- 出版年：2007
- 期刊代码：41_01689002
- 类别：ph
- 出版时间：11 March 2007
- 卷：572
- 期：2
- 页码：568-579
- 文件大小：930 K
摘要
An electrostatic ion storage ring designed for atomic and molecular physics has been constructed at Tokyo Metropolitan University. A variety of molecular ions have been successfully stored, sometimes simultaneously, by taking advantage of the fact that circulation in the ring is free from mass limitations. A storage time of several minutes was attained, and several beam handling techniques were developed. The mass spectrum of the stored ions can be obtained by a Fourier transformation of the pick-up signals, mass-selective beam bunching using an RF system, and the dumping of undesired ions by pulsed electric fields. Lifetime measurements of metastable ions and laser merging experiments have demonstrated the TMU E-ring's ability to study molecular dynamics on time scales ranging from several milliseconds to several seconds.