In-beam Gamma-ray Spectroscopy at the RIBF: Recent Results and Future Perspectives

Radioactive isotopes are produced at the RIBF by the fragmentation of a stable beam in a thick target. The beam cocktail produced by these reactions is selected and identified using the BigRIPS fragment separator. Secondary beams with energies between 100 - 250 MeV/u impinge in a secondary target, surrounded by a gamma-ray detection system. While the reaction products are detected with the ZeroDegree or SAMURAI spectrometers, the emitted gamma-rays are usually detected with the NaI(Tl) based DALI2 array. Recently a HPGe array was also used around the secondary target. In the presentation the experimental setups used at the RIBF for in-beam gamma ray spectroscopy will be shown, an overview of the results achieved using DALI2 combined with the MINOS liquid hydrogen target (SEASTAR project) will be presented, followed by a report on the use of Ge detectors at the RIBF (HiCARI project). Finally recent results and future perspectives, specially around the 100Sn region, will be discussed.