Marek Leslaw Pfutzner (University of Warsaw (PL))
The Optical TPC detector has been developed to study the very rare and exotic decays with emission of charged particles. The primary goal was to study in detail the 2p radioactivity, but the device was proven successful also in the beta-delayed particle spectroscopy. In the talk, the main results obtained for beta-delayed proton emission and for 2p radioactivity in the region of the doubly magic 48Ni will be summarized. The cases where the OTPC chamber has advantages over traditional set-ups based on Si detectors, will be discussed. The examples include multiparticle decays, detection of low energy particles on a large background of beta radiation, or precise branching ratio measurements. Finally, some ideas for possible future experiments will be presented.