Investigation of cluster structure of9Be from high precision elastic scattering data

Be9elastic scattering onPb208andAlCasal1, Rodríguez‐Gallardo2, Arias3 2015Phys. Rev. C347400View full textAdd to dashboardCite

“…The 9 Be system is stable but has a small separation energy [19], so breakup effects are expected to be important for the description of reactions induced by this nucleus. This has already been reported in previous CDCC calculations using a two-body approximation for 9 Be [20] and, more recently, with a three-body model for the scattering on a 208 Pb target [21,22]. The elastic and breakup data on 9 Be + 208 Pb [23,24] and 27 Al [25] provide a good opportunity to test the threebody description of the 9 Be system within a four-body reaction formalism and to study the effect of different target masses on the reaction mechanism.…”

Exploring the breakup and transfer coupling effects in9Be elastic scattering

“…This observation is different from the coupling effects observed in 9 Be+ 208 Pb system, where large coupling effects were observed at lower energy (even upto 10 MeV below the Coulomb barrier) due to one neutron transfer. In the present systems, the transfer couplings have a general tendency to give a rise in the backward angle elastic cross section which is opposite to the effect observed in 9 Be+ 208 Pb case [10]. This can be ascribed to the relatively less positive Q-value for one neutron transfer (+2.27 MeV) which leads to better optimum Q value matching in the latter case.…”

“…The nucleosynthesis via the reaction path α + α + n → 9 Be followed by 9 Be(α, n) 12 C [7] is the most efficient path to bridge the stability gaps at A = 5 and A = 8 and knowledge of cluster structure of 9 Be is vital for calculating the reaction rates. While a three body α + α + n cluster structure picture of the 9 Be nucleus is more accurate one, the effective two-body α + 5 He [α + (α + n)] [8,9] or n + 8 Be [n + (α + α)] [10,11] cluster configuration can be used successfully in the calculations to explain the reaction dynamics. Experimentally, several measurements of 9 Be breakup [12][13][14][15] have been performed to quantify the contribution of different cluster decay components in its low-lying excitation spectrum.…”

Reactions Induced by $$^9$$ 9 Be in a Four-Body Continuum-Discretized Coupled-Channels Framework

“…Reactions involving 9 Be should reflect both its weakly-bound nature and its three-body structure. Previous calculations considering 9 Be as a two-body projectile [2] and also as a three-body projectile [3] show that breakup effects are important even at sub-barrier energies.…”