Neutron transfer reactions induced byLi8onBe9

Abstract

Angular distributions for the elastic scattering of 8 Li on 9 Be and the neutron transfer reactions 9 Be( 8 Li, 7 Li) 10 Be and 9 Be( 8 Li, 9 Li) 8 Be were measured with a 27 MeV 8 Li radioactive nuclear beam. Spectroscopic factors for 8 Li ⊗ n = 9 Li and 7 Li ⊗ n = 8 Li bound systems were obtained from the comparison between the experimental differential cross section and finite-range distorted-wave Born approximation calculations with the code FRESCO. The spectroscopic factors obtained were compared to shell model calculations and to other experimental values from (d,p) reactions. Using the present values for the spectroscopic factor, cross sections for the direct neutron-capture reactions 7 Li(n,γ ) 8 Li and 8 Li(n,γ ) 9 Li were calculated in the framework of a potential model.

Elastic scattering and reactions of light exotic beams

“…However, the 9 Be( 8 Li, α) 13 B mechanism appears to be mostly statistical compound nucleus. Data for the elastic scattering, 9 Be( 8 Li, 7 Li) 10 Be and 9 Be( 8 Li, 9 Li) 8 Be reactions have also been reported at an incident 8 Li energy of 27 MeV [111]. The elastic scattering was well described by 7 Li + 9 Be optical potential parameters for similar incident 7 Li energies when the angular smearing of the 8 Li data was taken into account.…”

Recent developments in fusion and direct reactions with weakly bound nuclei

“…For 9 Be induced reactions, oneneutron stripping has been observed in collisions with several targets [215,342,388,389]. For the 8 Li − 9 Be collision, it was also found [390,391] that one-neutron pickup and one-neutron stripping are important reaction mechanisms and for the 8 Li − 208 Pb collision, transfer and breakup are the dominant processes at sub-barrier energies [392].…”

Elastic scattering and total reaction cross sections for theLi8+C12system

“…The latter can then be used to investigate low-energy reactions such as elastic scattering, transfer, and breakup, which can provide useful information on the structure of light nuclei near the dripline [1][2][3]. Moreover, from the theoretical point of view, the investigation of low-energy reactions with light exotic nuclei is of interest, because many of the high-energy approximations that simplify the theoretical treatments, such as classical trajectories and sudden or adiabatic assumptions, are no longer valid.…”