A novel ion cooling trap for multi-reflection time-of-flight mass spectrograph

[摘要] A radiofrequency quadrupole ion trap system for use with a multi-reflection time-of-flight mass spectrograph (MRTOF) for short-lived nuclei has been developed. The trap system consists of two different parts, an asymmetric taper trap and a flat trap. The ions are cooled to a sufficient small bunch for precise mass measurement with MRTOF in only 2 ms cooling time in the flat trap, then orthogonally ejected to the MRTOF for mass analysis. A trapping efficiency of approximate to 27% for Na-23(+) and approximate to 5.1% for Li-7(+) has been achieved. (C) 2013 Elsevier B.V. All rights reserved.

[发布日期] 2013-12-15

[效力级别]  Proceedings Paper

[关键词] Mass measurements;Unstable nuclei;Low-energy beam;Ion trap