Preparing isomerically pure beams of short-lived nuclei at JYFLTRAP

Eronen, T.; Elomaa, V. -V.; Hager, U.; Hakala, J.; Jokinen, A.; Kankainen, A.; Rahaman, S.; Rissanen, J.; Weber, C.; Aysto, J.

Preparing isomerically pure beams of short-lived nuclei at JYFLTRAP

Authors

Description

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.
5 pages, 7 figures, submitted to EMIS2007 Conference proceedings, Nucl. Instrum. Meth. Phys. Res. B (2007)