Elastic scattering of sup 14 C+ sup 12 C, sup 14 C+ sup 16 O, and sup 14 C+ sup 18 O

Thesis/Dissertation · Thu Jan 01 04:00:00 EST 1987

OSTI ID:5017034

Sterbenz, S M

We have carried out highly detailed studies of the elastic scattering of {sup 14}C from {sup 12}C, {sup 16}O, and {sup 18}O, in a search for resonant phenomena in heavy-ion systems of non-zero isospin and zero spin. Angular distributions from {sup 14}C+{sup 12}C and {sup 14}C+{sup 16}O scattering were measured at {sup 14}C bombarding energies ranging from 20 to 40.3 MeV in 0.35 MeV steps. {sup 14}C+{sup 18}O angular distributions were measured at {sup 14}C energies from 20 to 30 MeV in 0.40 MeV steps and from 22.5 to 32.5 MeV in 2.5 MeV steps. The great variety of behavior which characterizes heavy-ion scattering is clearly illustrated by our data. The {sup 14}C+{sup 12}C and {sup 14}C+{sup 16}O systems both exhibit marked gross structure in their excitation functions and deep oscillatory structure with a large backward angle rise in their angular distributions. They are in sharp contrast with the {sup 14}C+{sup 18}O system, where structure is not apparent, and cross-sections fall steeply at larger angles and higher energies. However, only in the {sup 14}C+{sup 12}C system are the excitation functions strongly fragmented by intermediate width structure. The anomalous appearance of the {sup 14}C+{sup 12}C angular distributions near 17.5 MeV (cm) does suggest the existence of a resonant state tentatively identified as l = 10 by phase shift analysis.

• Research Organization: Yale Univ., New Haven, CT (USA)
• OSTI ID: 5017034
• Country of Publication: United States
• Language: English

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
CARBON ISOTOPES
CHARGED-PARTICLE REACTIONS
DATA
ELASTIC SCATTERING
ENERGY RANGE
EXPERIMENTAL DATA
HEAVY ION REACTIONS
INFORMATION
ISOTOPES
MEASURING INSTRUMENTS
MEASURING METHODS
MEV RANGE
MEV RANGE 10-100
NUCLEAR REACTIONS
NUMERICAL DATA
OXYGEN ISOTOPES
SCATTERING