Mean range bunching of exotic nuclei produced by in-flight fragmentation and fission — Stopped-beam experiments with increased efficiency

The novel technique of mean range bunching has been developed and applied at the projectile fragment separator FRS GSI in four experiments FAIR phase-0 experimental program. Using a variable degrader system final focal plane FRS, ranges different nuclides can be aligned, allowing to efficiently implant large number simultaneously gas-filled stopping cell or an implantation detector. Stopping studying cocktail beam overcomes present limitations stopped-beam experiments. conceptual idea is described illustrated using simulations. In single setting 37 were stopped cryogenic measured broadband mass measurement with multiple-reflection time-of-flight spectrometer Ion Catcher.