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Angular Distributions of Alpha-particles from F 19 , Al 27 and P 31 bombarded with Protons

Journal Article · · Journal of the Physical Society of Japan
DOI:https://doi.org/10.1143/JPSJ.16.2378· OSTI ID:4803302

The angular distributions of alpha-particles were obtained for the reactions F19(p, α )O16 leaving the residual nucleus in the ground state, Al27(p, α )Mg24 and P31(p, α )Si28 leaving the residual nuclei in the ground and first excited states at four bombarding energies between 6.0 and 7.4 Mev. The angular distribution for the reaction Fi19 (p, α )O16 shows the backward peak at each energy, but at s all angles it depends on the bombarding energy. The angular distributions for the reactions Al27(p, α )Mg24 and P31(p, α )Si28 are also energy-dependent, but contain a larger isotropic part than those for the reaction F19(p, α )O16. The integrated cross sections for the reactions Al27(p, α )Mg24 and P31(p, α )Si28 leaving the residual nuclei in the first excited states are several times as large as those for the reactions leaving the residual nuclei in the ground states. - It appears unlikely that these reactions can be accounted for by the formation of compound nucleus or by simple direct interaction. The possible mechanisms through which these reactions may take place are discussed.

Research Organization:
Kyoto Univ.
Sponsoring Organization:
USDOE
NSA Number:
NSA-16-007055
OSTI ID:
4803302
Journal Information:
Journal of the Physical Society of Japan, Journal Name: Journal of the Physical Society of Japan Journal Issue: 12 Vol. 16; ISSN 0031-9015
Country of Publication:
Country unknown/Code not available
Language:
English

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Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ALPHA PARTICLES
ALUMINUM 27
ANGULAR DISTRIBUTION
COMPOUND NUCLEI
CONFIGURATION
COPPER 64
CROSS SECTIONS
DIFFUSION
DIRECT REACTIONS
DISTRIBUTION
ENERGY
ENERGY LEVELS
ENERGY RANGE
EPITHERMAL NEUTRONS
EXCITATION
FLUORINE 19
GRAPHITE
LATTICES
LUTETIUM 177
MAGNESIUM 24
MASS
MEASURED VALUES
MEV RANGE
NEUTRONS
NUCLEAR REACTIONS
NUCLEI
NUMERICALS
OXYGEN 16
PHOSPHORUS 31
PROTON BEAMS
RADIOACTIVITY
REACTION KINETICS
SCATTERING
SILICON 28
SLOWDOWN
SPECTRA
TEMPERATURE
THERMAL NEUTRONS
THERMAL RADIATION
URANIUM
WATER