Abstract
The recent advance in experimental studies of short‐lived exotic nuclei beyond the proton drip line is presented. In particular, in‐flight decays of proton‐unbound nuclei with picosecond lifetimes can be probed by a novel technique which tracks all decay products precisely, and the decay vertices as well as the angular correlations of the fragments are deduced from the measured trajectories. The corresponding pioneering experiment which identified a previously‐unknown isotope 19Mg and its two‐proton (2p) radioactivity as well as studied the reference 2p decay of the known isotope 16Ne is described. Systematic studies of other 2p precursors beyond the proton drip line are foreseen with this powerful technique whose sensitivity is larger by factor of 30 in comparison with a conventional invariant‐mass method. The 2p radioactivity candidates 30Ar, 34Ca and 26S are discussed. Information about the respective one‐proton unbound nuclei can be obtained with this technique by evaluating proton—heavy‐fragment correlations. Systematic studies of nuclei beyond the proton drip line, e.g., the well‐known proton resonances above the “waiting points” in the astrophysical rp‐process, 69Br and 73Br are feasible.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.