Characterization of low energy radioactive beams using direct reactions

We demonstrate a new technique to determine the beam structure of low energy radioactive beams using coincidence events from a direct reaction. The technique will be described and tested using Geant4 simulations. We use the technique to determine for the first time the width, divergence and energy of an accelerated radioactive beam produced at ISOLDE. We use data from an experiment with an 11Be beam incident on a deuteron target producing 10Be from a (d,t) reaction. The T-REX Si detector array was used for particle detection, but the technique is applicable for other setups. -- Highlights: ► We have developed a technique to determine the structure of a RIB. ► The technique have been tested on a low energy RIB produced at ISOLDE. ► This is the first beam characterization made on a RIB produced at ISOLDE. ► The technique can be used to determine the beam structure on-line