50-MeV sup 6 Li scattering from sup 12 C, sup 16 O, and sup 9 Be and the calibration of the tensor-polarized sup 6 Li beam

Thesis/Dissertation · Sun Jan 01 04:00:00 EST 1989

OSTI ID:5553138

Trcka, D E

The experimental work reported consists of (1) the measurements of the angular distributions for the scattering of {sup 6}Li from the targets {sup 9}Be, {sup 12}C, and {sup 16}O at a lithium bombarding energy of 50 MeV, and (2) the measurement of the tensor polarization of the FSU polarized {sup 6}Li source. 50 MeV data were taken for elastic and inelastic scattering to the 2{sup +} (4.44 MeV), 0{sup +} (7.65 MeV), and 3{sup {minus}} (9.64 MeV) states in {sup 12}C, the 5/2{sup {minus}} (2.43 MeV) state in {sup 9}Be, and the unresolved 0{sup +}/3{sup {minus}} (6.05/6.13 MeV) and 2{sup +}/1{sup {minus}} (6.92/7.12 MeV) states in {sup 16}O. The measurement of the tensor polarization of the FSU {sup 6}Li source allowed the absolute polarization efficiency of the source-accelerator system to be determined. The analytical work reported consists of a determination of the energy dependence of the optical potential parameters for {sup 6}Li + {sup 12}C scattering over the energy range from 11 MeV to 210 MeV. This has been attempted previously and the results have not been successful. A large body of data for {sup 6}Li + {sup 12}C allows more severe constraints than in previous studies. The inclusion of an angular momentum-dependent imaginary potential provides a good description of the elastic scattering data and the parameters determined in this study are smoothly varying with energy using Woods-Saxon form factors for the real and imaginary potentials. Inelastic scattering to the 2{sup +} (4.44 MeV), 0{sup +} (7.65 MeV), and 3{sup {minus}} (9.64 MeV) states in {sup 12}C are described well using the constructed energy dependent potentials in DWBA calculations. Analysis using the double folded real potential and a Woods-Saxon imaginary potential were performed on the same {sup 6}Li + {sup 12}C scattering data from 11 MeV to 210 MeV.

• Research Organization: Florida State Univ., Tallahassee, FL (United States)
• OSTI ID: 5553138
• Country of Publication: United States
• Language: English

Related Subjects

663450* -- Heavy-Ion-Induced Reactions & Scattering-- (1992-)
663520 -- Nuclear Mass Ranges-- A=6-19-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
BEAMS
BERYLLIUM 9 TARGET
BORN APPROXIMATION
CARBON 12 TARGET
CHARGED-PARTICLE REACTIONS
DWBA
ELASTIC SCATTERING
ENERGY DEPENDENCE
ENERGY RANGE
FORM FACTORS
HEAVY ION REACTIONS
INELASTIC SCATTERING
LITHIUM 6 REACTIONS
MEV RANGE
MEV RANGE 10-100
NUCLEAR POTENTIAL
NUCLEAR REACTIONS
OXYGEN 16 TARGET
PARTICLE PROPERTIES
POLARIZED BEAMS
POTENTIALS
SCATTERING
TARGETS
WOODS-SAXON POTENTIAL