The results of two studies of the elastic and inelastic scattering of ('6)Li are reported. The analysis of the data in both studies was designed to determine if a moderately parameter-free description of ('6)Li scattering on several targets was possible. The philosophy here was to derive the real nucleus-nucleus interaction potential starting from a microscopic nucleon-nucleon interaction and summing over the contributions from both target and projectile nucleons. A Woods-Saxon imaginary potential was used for the absorptive part of the interaction potential. The inelastic transition strengths were obtained from electron scattering rather than treating them as free parameters. It was found that for the present inelastic ('6)Li scattering, the nuclear and Coulomb transition strengths are equal and are consistent with electron scattering. / In the first study, elastic and inelastic scattering data extending to (theta)(,c.m.)(DBLTURN)175(DEGREES) are reported for ('6)Li + ('28)Si at 27 and 34 MeV. Optical model analyses of the elastic data were made using a variety of real potential forms. The large-angle data cannot be fitted with a Woods-Saxon real potential, but are well described by Woods-Saxon squared, double-folded or Fourier-Bessel potentials. The real potential is the same at both energies, but the imaginary potential is weaker at 27 MeV. The inelastic data were analyzed using the DWBA and coupled-channels techniques with folded real form factors and deformed Woods-Saxon imaginary potentials. The deformation lengths were taken from electron scattering. The 2('+) state was fitted well at both energies with the DWBA, while the prediction decreased too rapidly at large angles for the 4('+) state. The large-angle 4('+) data were better described when two-step excitations were included in the coupled-channels calculations. The forward-angle 2('+) data are sensitive to the interference between Coulomb and nuclear scattering and show that the nuclear and Coulomb deformation parameter (beta)(,2) are equal for this transition. / In the second study, differential cross sections for elastic and inelastic ('6)Li scattering from ('12)C at 24 and 30 MeV, and from ('16)O at 25.7 MeV were measured out to (theta)(,c.m.)(DBLTURN)170(DEGREES). Also by scattering ('12)C and ('16)O from ('6)Li, the inelastic cross sections for the excitation of the 3('+)(2.18 MeV) and the 2('+)(4.31 MeV) states of ('6)Li and an estimate of the continuum inelastic cross sections of ('6)Li were measured. . . . (Author's abstract exceeds stipulated maximum length. Discontinued here with permission of author.) UMI / Source: Dissertation Abstracts International, Volume: 45-03, Section: B, page: 0913. / Thesis (Ph.D.)--The Florida State University, 1984.
| Identifer | oai:union.ndltd.org:fsu.edu/oai:fsu.digital.flvc.org:fsu_75284 |
| Contributors | VINEYARD, MICHAEL FREDERICK., Florida State University |
| Source Sets | Florida State University |
| Detected Language | English |
| Type | Text |
| Format | 204 p. |
| Rights | On campus use only. |
| Relation | Dissertation Abstracts International |
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