12C+12Cand16

Molecular structure of highly excited resonant states inMg24and the correspondingBe8Chen1, Qi2, Liotta3 et al. 2010Phys. Rev. C110110View full textAdd to dashboardCite

“…Often the experimental spin assignment of the states in Table I is uncertain due to the statistical limitations of angular correlation data [19,21]. Our calculation confirms the experimental assignments when doubtful, as e.g., for the state at E * J = 23.9 MeV.…”

“…In addition, experimental excitation functions indicate that the decay into both channels proceeds through approximately the same probability [19,21,32]. Therefore one may assume that the preformation factor is P ≈ 0.5 for 8 Be as well as for 12 C. As a result, the resonant widths acquire…”

“…For highly-excited resonant states, other configurations with excited cluster and/or excited core would exist, which decreases the preformation factor of the interested channel, and consequently reduces the corresponding decay width. For the resonant states in the energy range of ≈ 23 − 34 MeV, however, all the experiments [15][16][17][18][19][20][21][22][23][24][25][26] We can further analyze the effect on the width from other possible channels. The Therefore, for width calculations in the energy range studied, contributions from excited channels should be negligible.…”

“…Already as early as 1960 resonant states observed in the 12 C+ 12 C elastic scattering reaction were found to correspond to quasimolecular structures in the compound nucleus 24 Mg [11,12]. Thenceforth, many reaction experiments were performed where different cluster-decay channels were observed, i.e., α+ 20 Ne * [13,14] [19,[21][22][23][24][25][26]. Also α-chain structures have been suggested [27].…”

C12+C12cluster resonances inMetelko1, Freer2, Ashwood3 et al. 2003Phys. Rev. CSelf Cite

“…In the earliest measurements the 24 Mg nucleus was inelastically scattered from a 12 C target and the subsequent decay into two 12 C nuclei was detected. A variety of other approaches have been used to populate the states in 24 Mg, for example ␣ transfer onto a 20 Ne projectile [3,4], or via the ␣ decay of the 28 Si nucleus populated through the 12 C+ 16 O entrance channel [5].…”