Study of /sup 11/B induced single-nucleon transfer reactions on /sup 40/Ca and cross section measurements for the 11. 08 MeV (3/sup +/) and 11. 096 MeV (4/sup +/) states in /sup 16/O populated by /sup 12/C(/sup 6/Li,d) and /sup 13/C(/sup 6/Li,t) reactions

Thesis/Dissertation · Wed Dec 31 23:00:00 EST 1980

OSTI ID:6244595

Glover, C W

The present study was undertaken to investigate whether the structure of the projectile-ejectile is important in determining the phasing of the transfer angular distributions, and to investigate the influence of different radially shaped distorting potentials on the transfer reaction calculations, angular distributions were measured for: /sup 40/Ca(/sup 11/B,/sup 12/C)/sup 39/K(J/sup ..pi../ = 3/2/sup +/ and 1/2/sup +/) and /sup 40/Ca(/sup 11/B,/sup 10/B(J/sup ..pi../ = 3/sup +/ and 1/sup +/))/sup 41/Ca single-nucleon transfer reactions, /sup 11/B + /sup 40/Ca(J/sup ..pi../ = 2/sup +/, 3/sup -/ and 5/sup -/) and /sup 11/B(J/sup ..pi../ = 1/2/sup -/) + /sup 40/Ca inelastic reactions, and /sup 10/ /sup 11/B + /sup 40/Ca and /sup 12/C + /sup 39/K elastic scattering data. The analysis of all the new data taken proceeds in two steps. First, the Woods-Saxon distorting potential that describes the elastic scattering data are extracted and used as the distorting potentials in the DWBA calculations for the inelastic and transfer reactions. Then, this same procedure is repeated but different radially shaped double-folding distorting potentials are used instead of the Woods-Saxon potentials. The (/sup 6/Li,d) reaction has been used to determine the presence of alpha-particle clustering in nuclei. The interpretation of the (/sup 6/Li,d) reaction study as proceeding by a direct one-step ..cap alpha.. particle transfer has recently been questioned because of the non-..cap alpha.. particle 11.096 MeV (4/sup +/) state is populated 50 times stronger by the (/sup 6/Li,d) reaction than expected from /sup 12/Ca(..cap alpha..,..cap alpha../sub 0/) studies. It is difficult to determine the /sup 12/C(/sup 6/Li,d)/sup 16/O 11.096 MeV (4/sup +/) cross section because the close lying 11.08 MeV (3/sup +/) state cannot be resolved in the /sup 12/C(/sup 6/Li,d) spectra. In the second investigation, particle-..gamma..-ray measurements were done to determine the 3/sup +/ state's cross section by both /sup 12/C(/sup 6/Li,d) and /sup 13/C(/sup 6/Li,t) reactions. Excitation functions were measured for the 3/sup +/ and 4/sup +/ states in 2 MeV steps from 20 to 34 MeV.

• Research Organization: Florida State Univ., Tallahassee (USA)
• OSTI ID: 6244595
• Country of Publication: United States
• Language: English

Related Subjects

651515 -- Nuclear Properties & Reactions
A=39-58
Theoretical-- Nuclear Reactions & Scattering-- (-1987)
651525* -- Nuclear Properties & Reactions
A=39-58
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BORN APPROXIMATION
BORON 10 REACTIONS
BORON 11 REACTIONS
CALCIUM 40 TARGET
CARBON 12 REACTIONS
CARBON 12 TARGET
CHARGED-PARTICLE REACTIONS
COMPOUND-NUCLEUS REACTIONS
CROSS SECTIONS
DATA
DIRECT REACTIONS
DISTRIBUTION
DWBA
ELASTIC SCATTERING
EXCITATION FUNCTIONS
EXPERIMENTAL DATA
FUNCTIONS
HEAVY ION REACTIONS
INELASTIC SCATTERING
INFORMATION
LITHIUM 6 REACTIONS
MANY-NUCLEON TRANSFER REACTIONS
MULTI-NUCLEON TRANSFER REACTIONS
NUCLEAR POTENTIAL
NUCLEAR REACTIONS
NUMERICAL DATA
ONE-NUCLEON TRANSFER REACTIONS
POTASSIUM 39 TARGET
POTENTIALS
SCATTERING
TARGETS
THREE-NUCLEON TRANSFER REACTIONS
TRANSFER REACTIONS
WOODS-SAXON POTENTIAL