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Interference effects in the C/sup 12/(p,. gamma. )N/sup 13/ reaction

Technical Report ·
OSTI ID:6540113
; ;

The ground-state transition in the /sup 12/C(p,..gamma..)/sup 13/N reaction has been 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 satisfactorily 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 /sup 13/N to the cross section could not be detected in any of the excitation curves or angular distributions. Calculations based on possible interference effects due to 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 was found to be 37 ..mu..b (..omega..GAMMA/sub ..gamma../ = 1.06 eV). 29 refs., 8 figs.

Research Organization:
Maryland Univ., College Park (USA). Dept. of Physics and Astronomy; Naval Research Lab., Washington, DC (USA)
OSTI ID:
6540113
Report Number(s):
DOE/NBM-7008285; ON: DE87008285
Country of Publication:
United States
Language:
English

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Related Subjects

651220* -- Nuclear Properties &amp; Reactions
A=1-5
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BARYON REACTIONS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CAPTURE
CARBON 12 TARGET
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
ELECTRON CAPTURE RADIOISOTOPES
ENERGY LEVELS
ENERGY RANGE
GAMMA SPECTRA
GROUND STATES
HADRON REACTIONS
INTERFERENCE
ISOTOPES
LIGHT NUCLEI
MEV RANGE
MEV RANGE 01-10
MINUTES LIVING RADIOISOTOPES
NITROGEN 13
NITROGEN ISOTOPES
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
ODD-EVEN NUCLEI
PROTON REACTIONS
RADIOISOTOPES
SPECTRA
TARGETS