Preparing isomerically pure beams of short-lived nuclei at JYFLTRAP

TL;DR

This paper introduces a rapid, high-resolution method for preparing isomerically pure ion beams of short-lived nuclei using a novel dipolar rf-excitation technique at JYFLTRAP, significantly improving purification speed and precision.

Contribution

The paper presents a new, faster method for isomeric cleaning of ion beams with high resolving power, enhancing the capabilities of Penning trap mass spectrometry.

Findings

Achieved a resolving power >100,000 for isomeric separation.

Method is at least five times faster than previous techniques.

Effective removal of contaminants during retransfer process.

Abstract

A new procedure to prepare isomerically clean samples of ions with a mass resolving power of more than 100,000 has been developed at the JYFLTRAP tandem Penning trap system. The method utilises a dipolar rf-excitation of the ion motion with separated oscillatory fields in the precision trap. During a subsequent retransfer to the purification trap, the contaminants are rejected and as a consequence, the remaining bunch is isomerically cleaned. This newly-developed method is suitable for very high-resolution cleaning and is at least a factor of five faster than the methods used so far in Penning trap mass spectrometry.