2000 character limit reached
Candidates for the 5$α$ condensed state in ${}^{20}$Ne (2008.01632v5)
Published 4 Aug 2020 in nucl-ex
Abstract: We conducted the coincidence measurement of $\alpha$ particles inelastically scattered from ${}{20}$Ne at $0{\circ}$ and decay charged particles in order to search for the alpha-particle condensed state. We compared the measured excitation-energy spectrum and decay branching ratio with the statistical-decay-model calculations, and found that the newly observed states at $E_x$ = 23.6, 21.8, and 21.2 MeV in ${}{20}$Ne are strongly coupled to a candidate for the 4$\alpha$ condensed state in ${}{16}$O. This result presents the first strong evidence that these states are the candidates for the 5$\alpha$ condensed state.