Study of ¹¹Be excited states via the ¹⁰Be(d,p) reaction in SOLARIS with the AT-TPC

This contribution reports on the commissioning of using transfer reactions in inverse kinematics in SOLARIS with the Active Target Time Projection Chamber (AT-TPC). The goal of this experiment is to establish the possibility to perform transfer reactions at low beam intensities, typically 1-2 kHz, using the high luminosity provided by the AT-TPC. A beam of ¹⁰Be was accelerated to about 9 MeV/u in the ReA6 linac and delivered to the AT-TPC placed in a 3 Tesla magnetic field provided by the SOLARIS solenoid. The AT-TPC was filled with pure deuterium gas at atmospheric pressure. The four reaction channels ¹⁰Be(d,p), ¹⁰Be(d,d), ¹⁰Be(d,t) and ¹⁰Be(d,α) were detected simultaneously. The preliminary analysis of these reactions will be presented, with emphasis on the ¹⁰Be(d,p) channel that populates bound and unbound states in ¹¹Be, with a particular interest towards a 3.41 MeV state for which the parity is still unknown. The ¹⁰Be(d,t) channel populates unbound states in ⁹Be that can decay via double α emission. The possibility to perform transfer reaction measurements at that intensity level opens many new exciting prospects with the soon-to-be-available rare isotope re-accelerated beams of FRIB.