Medium energy studies of the (p,p. cap alpha. ) reaction on light nuclei. [26. 0 to 46. 8 MeV]
The scattering of medium-energy protons on alpha clusters in the nuclei /sup 9/Be, /sup 16/O, and /sup 20/Ne has been investigated. The interaction was viewed in the Impulse Approximation, in which the incident proton interacts only with an alpha cluster in the target nucleus. The momentum distribution of the alpha cluster was calculated from the measured cross sections by means of this simple model of the interaction. The /sup 9/Be data are well fit by this model at 46.8 MeV. At lower incident energies the quasi-elastic yield was reduced, the reaction proceeded primarily by a sequential mechanism at 26.0 MeV. The cluster model parameters resulting from the Impulse Approximation analysis of these data reflected the effects of absorption of the quasi-elastically scattered particles and/or the effects of the increased de Broglie wavelength when compared with higher-energy results. The /sup 20/Ne and /sup 16/O data also showed possible evidence of absorption. The /sup 16/O results gave no indication of a quasi-elastic scattering mechanism. Some indication of quasi-elastic p-..cap alpha.. scattering was observed in Ne; however, this interpretation of these results is not conclusive. Observation of the /sup 20/Ne (p,p..cap alpha..)/sup 16/O reaction at substantially higher incident energy may resolve this point. These results clearly indicate the need for a more physically realistic analysis of these data. The interactions of the residual nucleus with the incoming and outgoing particles must be taken into account. 39 figures, 5 tables.
- Research Organization:
- California Univ., Los Angeles (USA). Dept. of Physics
- DOE Contract Number:
- AM03-76SF00010
- OSTI ID:
- 6656137
- Report Number(s):
- UCLA-10P18-34
- Country of Publication:
- United States
- Language:
- English
Similar Records
Systematic study of alpha-particle spectroscopic strengths using the (p,p. cap alpha. ) reaction at 101. 5 MeV
Interaction of intermediate-energy protons with {sup 20}Ne and {sup 24}Mg nuclei within the multiple-scattering model
Related Subjects
PROTON REACTIONS
PICKUP REACTIONS
PROTONS
BERYLLIUM 9 TARGET
OXYGEN 16 TARGET
NEON 20 TARGET
ALPHA PARTICLES
ANGULAR DISTRIBUTION
DIFFERENTIAL CROSS SECTIONS
ENERGY SPECTRA
EXPERIMENTAL DATA
IMPULSE APPROXIMATION
MEV RANGE 10-100
NUCLEAR REACTION KINETICS
PROTON SPECTRA
BERYLLIUM 8
DEUTERONS
HELIUM 5
ONE-NUCLEON TRANSFER REACTIONS
BREAKUP REACTIONS
CARBON 12
NITROGEN 13
THREE-NUCLEON TRANSFER REACTIONS
OXYGEN 16
QUASI-ELASTIC SCATTERING
ALKALINE EARTH ISOTOPES
ALPHA DECAY RADIOISOTOPES
BARYON REACTIONS
BARYONS
BERYLLIUM ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CARBON ISOTOPES
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
DIRECT REACTIONS
DISTRIBUTION
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTARY PARTICLES
ENERGY RANGE
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FERMIONS
HADRON REACTIONS
HADRONS
HELIUM ISOTOPES
INFORMATION
ISOTOPES
KINETICS
LIGHT NUCLEI
MEV RANGE
MINUTES LIVING RADIOISOTOPES
MULTI-NUCLEON TRANSFER REACTIONS
NITROGEN ISOTOPES
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEONS
NUMERICAL DATA
ODD-EVEN NUCLEI
OXYGEN ISOTOPES
QUASI-FREE REACTIONS
RADIOISOTOPES
REACTION KINETICS
SCATTERING
SECONDS LIVING RADIOISOTOPES
SPECTRA
STABLE ISOTOPES
TARGETS
TRANSFER REACTIONS
651325* - Nuclear Properties & Reactions
A=6-19
Experimental- Nuclear Reactions & Scattering- (-1987)
651425 - Nuclear Properties & Reactions
A=20-38
Experimental- Nuclear Reactions & Scattering- (-1987)