A novel ion cooling trap for multi-reflection time-of-flight mass spectrograph
Y. Ito, P. Schury, M. Wada, S. Naimi, C. Smorra, T. Sonoda, H. Mita,, A. Takamine, K. Okada, A. Ozawa, H. Wollnik
TL;DR
This paper introduces a new ion cooling trap system designed to improve the efficiency and speed of mass spectrometry for short-lived nuclei, enabling rapid and precise measurements.
Contribution
The paper presents a novel RF quadrupole ion trap system with asymmetric taper and flat traps, achieving fast cooling and high trapping efficiency for mass spectrometry.
Findings
Cooling time of 2 ms for ions to prepare for measurement
Trapping efficiency of ~27% for 23Na+
Trapping efficiency of ~5.1% for 7Li+
Abstract
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 ~27% for 23Na+ and ~5.1% for 7Li+ has been achieved.
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