MECHANISMS FOR THE O$sup 16$(He$sup 3$,He$sup 4$)O$sup 15$ REACTION
BS>Excitation curves for the OO/sup 16/(He/sup 3/, alpha )O/sup 15/ and O/sup 16/(He /sup 3;p) F/sup 18/ reactions show pronounced resonance structure in the He/sup 3/ energy range from 2.0 to 3.0 Mev. It has been previously demonstrated that the energy dependenee of the alpha particle angular distribution coefficients in the region of the strongest resonance structure requires interference between compound states with angular momentum 1/2 and 5/2 and like parity at excitations of 10.44 and 10.46 Mev in Ne/sup 19/. Total and partial widths tor both resonances were extracted from the data; the He/sup 3/ partial width of the 1/2 resonance is 67% of the single particle limit. In fitting the expertmental data, it was necessary to include the energy dependence of the resonance parameters. Alpha particle angular distributions measured between resonances indicate a direct interaction mechanism for the reaction. A small, relatively constant direct interaction reaction amplitude and a markedly energy dependent compound system amplitude which is dominant in the vicinity of compound system resonances are suggested by these measurements. An upper limit of 0.8 mu b was established for the He/sup 3/ capture cross section proceeding through the 1/2 resonance. (auth)
- Research Organization:
- Atomic Energy of Canada Ltd., Chalk River, Ont.
- NSA Number:
- NSA-14-002023
- OSTI ID:
- 4223490
- Journal Information:
- Nuclear Phys., Journal Name: Nuclear Phys. Vol. Vol: 13
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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SOME ANGULAR DISTRIBUTION MEASUREMENTS ON THE REACTIONS $sup 16$O($sup 3$He,d)$sup 17$F AND $sup 16$O($sup 3$He,/cap alpha/)$sup 15$O
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Elastic scattering of tritons by $sup 16$O
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Mon Nov 30 23:00:00 EST 1959
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· Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D
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OSTI ID:4831321
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Sun Dec 30 23:00:00 EST 1973
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Related Subjects
ALPHA PARTICLES-- ANGULAR DISTRIBUTION-- ANGULAR MOMENTUM-- BEAMS-- COMPOUND NUCLEI-- ENERGY-- ENERGY RANGE-- EXCITATION-- HELIUM 3-- INTERACTIONS-- MOMENTUM-- NUCLEAR REACTIONS-- NUCLEI-- OXYGEN 16-- PARITY-- RESONANCE
ALPHA PARTICLES-- BEAMS-- CROSS SECTIONS-- ENERGY RANGE-- EXCITATION-- HELIUM 3-- NUCLEAR REACTIONS-- OXYGEN 15-- OXYGEN 16-- RESONANCE
BEAMS-- CAPTURE-- CROSS SECTIONS-- ENERGY RANGE-- HELIUM 3-- NUCLEAR REACTIONS-- OXYGEN 16
BEAMS-- CROSS SECTIONS-- ENERGY RANGE-- EXCITATION-- FLUORINE 18-- HELIUM 3-- NUCLEAR REACTIONS-- OXYGEN 16-- PROTONS-- RESONANCE
PHYSICS
ALPHA PARTICLES-- BEAMS-- CROSS SECTIONS-- ENERGY RANGE-- EXCITATION-- HELIUM 3-- NUCLEAR REACTIONS-- OXYGEN 15-- OXYGEN 16-- RESONANCE
BEAMS-- CAPTURE-- CROSS SECTIONS-- ENERGY RANGE-- HELIUM 3-- NUCLEAR REACTIONS-- OXYGEN 16
BEAMS-- CROSS SECTIONS-- ENERGY RANGE-- EXCITATION-- FLUORINE 18-- HELIUM 3-- NUCLEAR REACTIONS-- OXYGEN 16-- PROTONS-- RESONANCE
PHYSICS