Discovery of Neutron-Rich Silicon Isotopes 45,46Si

Le résumé fourni par la source

Abstract New isotopes $^{45,46}$Si, which extend beyond the most neutron-rich Si isotopes confirmed thus far, have been discovered at the RI Beam Factory at the RIKEN Nishina Center. The isotopes were produced by the in-flight fragmentation reactions of $^{70}$Zn at 345 MeV/nucleon on a Be target. All the projectile fragments were analyzed and identified using the large-acceptance two-stage separator BigRIPS. Consequently, six $^{45}$Si events and one $^{46}$Si event were confirmed. The neutron-bound nature of odd-N$^{45}$Si may have a significant impact on the nuclear stability of neutron-rich proton $sd$-shell nuclei at approximately $N=40$.

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