The (α, p ) Reactions on Light and Medium-Weight Nuclei
Journal Article
·
· Journal of the Physical Society of Japan
Using approximates 22-Mev alpha particles the angular distributions of protons from ( alpha ,p) reactions on B/sup 10/, C/sup 12/, N/sup 14/, Na/sup 23/ , Mg/sup 24/, Pa/sup 31/, S/sup 32/, Ca/sup 40/, Sc/sup 45/, Mn/sup 55/, Fe/sup 54/, Fe/sup 56 /, and Co/sup 59/ were measured. The angular distributions on the light nuclei show diffraction-like patterns, but those on the medium-weight nuclei are peaked at forward angle and decrease monotonically with angle. These anguiar distributions are fitted with theories of a stripping reaction. At first they are compared with a theory obtained by using plane-wave approximation for wave functions of incoming alpha particles and outgoing protons. They are also compared with a theory using a simple distorted-wave approximation which fits better with the experimental results. The values of parameters in the theoretical formula show systematic differences in cases that tritons are captured by target nuclei with angular momenta 0 and 2. Some results on spectroscopic investigations of the target or residual nuclei are also discussed. The ( alpha ,p), ( alpha ,n), and (p, alpha ) reactions have a strong energy dependence near 20-Mev excitations, and above this region their energy dependences become smaller. (auth)
- Research Organization:
- Osaka Univ.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-17-028288
- OSTI ID:
- 4686696
- Journal Information:
- Journal of the Physical Society of Japan, Journal Name: Journal of the Physical Society of Japan Journal Issue: 5 Vol. 18; ISSN 0031-9015
- Publisher:
- Physical Society of Japan
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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