Dynamic polarization potential effects on vector analyzing powers of 6Li–28Si elastic scattering from non-monotonic potentials

Non-monotonic potentials and vector analyzing powers of 6,7 Li scattering by 12 C, 26 Mg, 58 Ni, and 120 Sn

“…Without the inclusion of U pol (R), the DF U bare (R) potential needs a renormalization factor of 0.5 to 0.6 to fit the data. The effect of DPP, arising from CDCC calculations, on the 22.8 MeV VAP data of the 6 Li + 28 Si elastic scattering has been shown explicitly in [3].…”

“…Final fits have been done visually after taking guidance from the χ 2 fits, since it is more important to reproduce the features, e.g., positions of the peaks etc., of the angular distributions than naively minimizing the χ 2 only [37]. The final parameters for the imaginary and SO potentials are noted in table 3. One can see that the effective SO strengths are either attractive with positive sign of the depth V SO or repulsive with negative depth.…”

“…The latter principle is not explicitly considered in other forms of the EDF theory existing in the literature, such as those based on the Skyrme type of the NN interaction [14]. The coupled-channels (CC) and CDCC analyses in [3] demonstrated explicitly that the NM aspect of the real central potential in conjunction with an optimum imaginary part triggers the correct DPP leading to an adequately effective SO potential to reproduce simultaneously the CS and VAP data of the 6 Li- 28 Si elastic scattering without any need for renormalization or adjustment of the parameters of the real part [3].…”

“…The relative importance of these two spin-dependent interactions and its energy dependence are subjects of considerable interest [12,23]. The work of Basak et al [3] demonstrates that the effective SO potential, generated through DPP alone, can account for the 22.8 MeV VAP data of the 6 Li- 28 Si elastic scattering well without having a static SO term. This indicates that the static SO potential is small at this energy.…”

“…-The optical model analyses have been carried out using the code SFRESCO, which incorporates the coupled-channels code FRESCO 2.5 [31] Table 2: Analytic parameters in (1) of the EDF-generated NM projectile-target (system) potential along with the Coulomb radius RC and the volume integrals JR/(AP AT ). The incident energy (ELi) and depth parameters are in MeV, the geometry parameters in fm and JR/(AP AT ) in MeV fm 3 . 3), of the projectile-target (system) potential along with the total χ 2 per point on combined fits to both CS and iT11 data.…”