Orateur
Description
Light proton-unbound nuclei, $^8$C, $^7$B, $^6$Be and $^5$Li, were investigated by the missing mass method. By using this method, we can measure resonances independently of their decay channels. This is efficient especially for the four-proton unbound nucleus $^8$C. Decay channels can be also investigated by the coincidence detection.
We performed the experiment with an N=3 isotone secondary beam containing $^9$C, $^8$B, $^7$Be and $^6$Li produced by the LISE spectrometer. The beam was bombarded on a liquid hydrogen target of 1.5 mm in thickness. Resonances in proton-unbound N=2 isotones were systematically populated via the one-neutron transfer ($p,d$) reaction. An array of MUST2 telescopes was used to detect recoil deuterons from the target and decay fragments. We will report on the experimental results on newly observed resonances.
