An RF quadrupole–time-of-flight system for isobar-separation and multiplexed low-energy Rare-Isotope Beam experiments

Abstract.

A novel system consisting of RF quadrupole and time-of-flight sections is proposed, in which ions can be cooled, bunched, mass separated with a resolution sufficient to differentiate between isobars, and guided to different experimental setups, e.g. for precision mass measurements or mass-resolved decay spectroscopy. It enables multiplexed operation of several connected experiments and interleaved measurements using different nuclides in one connected experiment. Such a system could be employed advantageously at in-flight facilities, at which experiments with stopped exotic nuclei are made possible using gas-filled stop** cells, such as SHIPTRAP at GSI, or potentially at ISOL facilities. First results for individual stages of the system are presented.