A source for producing beams of vector polarized ('6)Li nuclei has been constructed and tested. The negative ion source is based on the atomic beam technique for selectively populating hyperfine spin states in a beam of ('6)Li atoms. Metallic ('6)Li is formed into a supersonic beam by heating the separated isotope in an oven and extracting the beam through a Laval nozzle and heated collimators. The electronic states are separated in a permanently magnetized sextupole magnet and the nuclei are polarized by a radio frequency transition. The polarized beam is ionized on a hot tungsten strip and converted to a negatively charged beam in a cesium charge exchange canal. The spin axis is rotated by a Wien filter and accelerated by an electrostatic tandem accelerator to energies of up to 6 MeV/nucleon. The beam has been focussed into a new rotatable scattering chamber system where the beam polarization has been measured using a helium gas polarimeter. / The second part of this study is an analysis of polarized triton scattering from ('12)C at 9, 11, 15, and 17 MeV. Through the use of microscopic central and spin-orbit potentials, it is found that a simple spin-orbit description of the spin dependence of the interaction is insufficient to describe the data. A more detailed investigation of possible resonances and channel coupling effects is necessary in order to better understand this system at these energies. / The last part of this study is an investigation of the spin dependence of ('6)Li + ('16)O scattering at 22.8 MeV. Excitation function data for the elastic channel and the inelastic strength of the ('6)Li first excited state were measured to complement previously measured elastic cross section and analyzing power data for this system. The vector analyzing powers show a much greater sensitivity to coupled-channels and resonance effects than the cross section. It is only when the channel coupling to the projectile excitation channel is combined with a spin-orbit potential that the analyzing power data can be described. However, more analyzing power data is needed to resolve the sources of the spin dependence of this system. / Source: Dissertation Abstracts International, Volume: 48-01, Section: B, page: 0171. / Thesis (Ph.D.)--The Florida State University, 1986.
| Identifer | oai:union.ndltd.org:fsu.edu/oai:fsu.digital.flvc.org:fsu_76010 |
| Contributors | SANDERSON, DAVID PERRY., Florida State University |
| Source Sets | Florida State University |
| Detected Language | English |
| Type | Text |
| Format | 230 p. |
| Rights | On campus use only. |
| Relation | Dissertation Abstracts International |
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