INTERFERENCE EFFECTS IN THE C$sup 12$(p,$gamma$)N$sup 13$ REACTION
The ground-state transitium in the C/sup 12/(p, gamma )N/sup 13/ reaction is studied in detail for the range of proton bombarding energies from 1.5 to 2.0 Mev. The measured angular distributions show large asymmetries, which are strongly energy-dependent. Calculations with a resonance-capture mechanism indicate that the angular distributions and energy dependence of the cross section can be interpreted in terms of the 1.70-Mev resonance (N/sup 13/* = 3.51 Mev) interfering with the 0.46-Mev resonance (N/sup 13/* = 2.37 Mev) A contribution from the 3.56-Mev level in N/sup 13/ to the cross section is not detected in any of the excitation curves or angular distributions. Calculations based on possible interference effects from the 3.56 Mev level yield an upper limit for the (p, gamma ) cross section proceeding through this state of 0.16 mu b ( omega GAMMA /sub gamma /< 0.006 ev). The (p, gamma ) cross section for the 3.51 Mev level is found to be 37 mu b ( omega GAMMA /sub gamma / = 1.06 ev). (auth)
- Research Organization:
- Univ. of Maryland, College Park; and Naval Research Lab., Washington, D.C.
- NSA Number:
- NSA-17-031465
- OSTI ID:
- 4669687
- Journal Information:
- Nuclear Physics (Netherlands) Divided into Nucl. Phys. A and Nucl. Phys. B, Journal Name: Nuclear Physics (Netherlands) Divided into Nucl. Phys. A and Nucl. Phys. B Vol. Vol: 44; ISSN NUPHA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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