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Nuclear molecular orbital effects and the /sup 13/C + /sup 13/C. -->. /sup 12/C + /sup 14/C rearrangement reaction

Thesis/Dissertation ·
OSTI ID:6298263
The single-neutron transfer induced by the scattering of /sup 13/C + /sup 13/C has been identified as a reaction (/sup 13/C + /sup 13/C ..-->.. /sup 12/C + /sup 14/C g.s.; /..delta..m/ = 0.1) which would in principle be quite sensitive to the occurrence of nuclear MO phenomena. By comparing the low order approximations to the atomic and molecular coupled-channel methods in a simple model for this reaction it is found that the ratio of the magnetic substate contributions to the reaction cross section may be a useful probe of the details of the transfer process. In particular, MO effects are predicted to enhance the ..delta..m = 0/..delta..m = l ratio of transition strengths relative to the DWBA. For the study of /sup 13/C + /sup 13/C elastic scattering the differential cross sections for center of mass scattering angles of 50/sup 0/, 60/sup 0/, 70/sup 0/, 80/sup 0/, and 90/sup 0/ were measured at 1 MeV energy increments (lab) in the range E/sub Beam/ = 14.0 t0 72.0 MeV. Background due to /sup 12/C + /sup 13/C elastic scattering was eliminated by using a kinematic coincidence technique to identify events corresponding to the /sup 13/C + /sup 13/C ..-->.. /sup 13/C + /sup 13/C reaction. The measured /sup 13/C + /sup 13/C elastic scattering excitation functions show gross structure oscillations very similar to those observed in /sup 12/C + /sup 12/C (energy averaged), /sup 14/N + /sup 14/N, and /sup 16/O + /sup 16/O elastic scattering. Absolute cross sections for the /sup 13/C + /sup 13/C ..-->.. /sup 12/C + /sup 14/C reaction were measured at eighteen energies in the interval 16.0 less than or equal to E/sub Beam/ less than or equal to 50.0 MeV. At each energy angular distributions consisting of approximately ninety data points spread over the angular region 32/sup 0/ less than or equal to theta/sub c.m./ less than or equal to 100/sup 0/ were obtained.
Research Organization:
Yale Univ., New Haven, CT (USA)
OSTI ID:
6298263
Country of Publication:
United States
Language:
English

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Related Subjects

651325* -- Nuclear Properties & Reactions
A=6-19
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CARBON 13 REACTIONS
CARBON 13 TARGET
CARBON 14
CARBON ISOTOPES
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
DIFFERENTIAL CROSS SECTIONS
DIRECT REACTIONS
DISTRIBUTION
ELASTIC SCATTERING
ENERGY RANGE
EVEN-EVEN NUCLEI
EXCITATION FUNCTIONS
EXPERIMENTAL DATA
FUNCTIONS
HEAVY ION REACTIONS
INFORMATION
ISOTOPES
LIGHT NUCLEI
MEV RANGE
MEV RANGE 10-100
NUCLEAR MOLECULES
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
ONE-NUCLEON TRANSFER REACTIONS
RADIOISOTOPES
SCATTERING
TARGETS
TRANSFER REACTIONS
YEARS LIVING RADIOISOTOPES