Alpha-particle and triton cluster states in 19F

αcluster structures in unbound states in19Ne

“…On the contrary, cluster structures in the 4N systems with a hole in a cluster core, are also interesting research subjects [7][8][9][10][11]. For example, there is a recent study of 11 B = α + α + t, corresponding to a proton hole system of 12 C = 3α [7].…”

“…For example, there is a recent study of 11 B = α + α + t, corresponding to a proton hole system of 12 C = 3α [7]. Pioneering work of the hole system is the study of the 19 F nucleus [8][9][10][11]. The 19 F nucleus is the one proton deficient system of 20 Ne, and the rotational bands of α + 15 N and t + 16 O, which are calculated from the folding type potential, were clearly assigned to the energy levels observed in the α and t transfer reactions [8].…”

“…Pioneering work of the hole system is the study of the 19 F nucleus [8][9][10][11]. The 19 F nucleus is the one proton deficient system of 20 Ne, and the rotational bands of α + 15 N and t + 16 O, which are calculated from the folding type potential, were clearly assigned to the energy levels observed in the α and t transfer reactions [8]. The energy levels in 19 F have also been analyzed in the more sophisticated models, such as the full microscopic α + 15 N cluster model on the basis of the generator coordinate method (GCM) [9,10] and the orthogonalized condition model (OCM) of the (t + 16 O) + (α + 15 N) coupled-channels [11].…”

“…In a naive consideration, the weak coupling state of the hole in 16 O and the α particle is also expected in the neutron-deficient system, α + 15 O in 19 Ne [10,11]. In fact, a formation of α + 15 O in 19 Ne was discussed from the perspective of 19 F - 19 Ne Coulomb displacement energy [8,11]. However, detailed analysis of the energy levels over a wide energy region, which covers the unbound continuum states, the analysis of the resonance width above the α threshold and the excitation function of the resonant scattering, have not been undertaken yet because available experimental data are still limited.…”

“…For example, there is a recent study of 11 B = α + α + t, corresponding to a proton hole system of 12 C = 3α [7]. Pioneering work of the hole system is the study of the 19 F nucleus [8][9][10][11]. The 19 F nucleus is the one proton deficient system of 20 Ne, and the rotational bands a…”