Elastic backscattering measurements forLi6+Si28at sub- and near-barrier energies

Probing the potential and reaction coupling effects ofLi6,7+Si28Zerva1, Pakou2, Rusek3 et al. 2010Phys. Rev. CSelf Cite285150View full textAdd to dashboardCite

“…In the same figure, we also present results from Ref. [14] where using a similar procedure we had attempted to define in a more accurate way the optical potential, extending its energy dependence to lower energies. The results of the analysis of the elastic backscattering according to the various alternative optical potentials described in detail in Ref.…”

“…Details of the experimental method were given in [14]. We give here some points pertinent to this work.…”

“…Previously measured elastic scattering cross sections [14], the error-weighted mean of the measured cross sections at 150 • and 170 • , as a function of laboratory energy for 6 Li + 28 Si. The lines represent ECIS calculations with the optical potentials presented in Fig.…”

“…At these backward angles, deviations from unity of the ratio to Rutherford of the (quasi)elastic cross sections are mainly sensitive to the surface properties of the potential [9]. Recently, going a step further, we used the elastic backscattering as a tool to help probe the energy dependence of the potential at near-and sub-barrier energies for the weakly bound nucleus 6 Li scattered by the light target 28 Si [14]. Previous inconsistencies [15,16] with regard to the new potential anomaly observed in this system were clarified.…”

“…CDCC calculations are presented for the 7 Li + 28 Si system and coupled reaction channel (CRC) calculations for the 6 Li + 28 Si system, where couplings to the ( 6 Li, 5 Li) single-neutron stripping channels were added to the 6 Li breakup couplings included in the CDCC calculations of our previous work [14]. In this work we shall refer to calculations that include breakup couplings alone as CDCC, while calculations that include both breakup and transfer couplings will be referred to as CRC.…”