Preparing isomerically pure beams of short-lived nuclei at JYFLTRAP
arXiv:0801.2904 · doi:10.1016/j.nimb.2008.05.076
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.
5 pages, 7 figures, submitted to EMIS2007 Conference proceedings, Nucl. Instrum. Meth. Phys. Res. B (2007)