A STUDY OF THE RESONANT CONTRIBUTION TO THE C$sup 12$(d,n)N$sup 13$ REACTION NEAR 4.00 Mev
Thesis/Dissertation
·
OSTI ID:4646053
Measurements were made of the C/sup 12/(d,n)N/sup 13/ cross section as a function of angle and energy. The experimental results are analyzed and interpreted. The study was undertaken in an effort to get an improved understanding of interference effects between the stripping mode and the compound nucleus mode of this type of reaction. Nine angular distributions were obtained for the C/sup 12/(d,n)N/sup 13/ reaction in 5 plus or minus -kev steps over what appeared to be an isolated resonance at the bombarding energy of 4.00 Mev. In the analysis of the results the measured cross sections were divided into direct (slowly varying) components and resonant components on the basis of the energy dependence. A combination of the general reaction theory, as expressed by Blatt and Biedenharn, and the stripping theory of Butler was used to interpret the separated results and to show the validity of the decomposition. Small systematic discrepancies found in a one-level description tended to indicate the possible existence of a narrow second level While the second or narrow level was only weakly resolved in this experiment, the wide first level was well resolved and some of the properties of the corresonding level of N/sup 14/ could be deduced. The spin of this level was determined to be J = 1 and the parity either minus or plus depending on whether the direct amplitude has the same or opposite signs in the forward and backward directions. The flatness of the differential cross sections in the backward directions for certain energies led to the suggestion that the lowest two waves (1 = 0, 1 = 1) of the incoming deuterons and outgoing neutrons may make the chief contribution to the yield in the direct interaction mode at large angles. This interpretation of the backward peaking was then shown to favor a negative parity for the wide level. (Dissertation Abstr.)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-17-038169
- OSTI ID:
- 4646053
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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Related Subjects
ANGULAR DISTRIBUTION
BLATT-BIEDENHARN FORMALISM
BUTLER THEORY
CARBON 12
COMPOUND NUCLEI
CROSS SECTIONS
DEUTERON BEAMS
DIRECT REACTIONS
ENERGY
ENERGY LEVELS
EXCITATION
INTERACTIONS
MEASURED VALUES
MEV RANGE
NEUTRONS
NITROGEN 13
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
PARITY
PHYSICS
QUANTUM MECHANICS
REACTION KINETICS
RESOLUTION
RESONANCE
SPIN
STRIPPING
BLATT-BIEDENHARN FORMALISM
BUTLER THEORY
CARBON 12
COMPOUND NUCLEI
CROSS SECTIONS
DEUTERON BEAMS
DIRECT REACTIONS
ENERGY
ENERGY LEVELS
EXCITATION
INTERACTIONS
MEASURED VALUES
MEV RANGE
NEUTRONS
NITROGEN 13
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
PARITY
PHYSICS
QUANTUM MECHANICS
REACTION KINETICS
RESOLUTION
RESONANCE
SPIN
STRIPPING