/sup 9/Be(p,p. cap alpha. ) /sup 5/He cluster knockout reaction with 150 MeV polarized protons
The (p,p..cap alpha..) cluster knockout reaction on /sup 9/Be was investigated using polarized incident protons. Coincident data for eight quasifree angle pairs were obtained at a bombarding energy of 150 MeV. Both differential cross sections and analyzing powers were measured for the energy-sharing distribution. Distorted wave impulse approximation calculations indicate that the reaction is dominated by a quasifree knockout process, and that a D-state component of the cluster-core wave function is important for larger momentum transfer. Extracted absolute spectroscopic factors for both S- and D-state knockout are in good agreement with theoretical predictions. The analyzing power follows the trend of free p-/sup 4/He scattering and agrees with the distorted wave impulse approximation calculation reasonably well. Near zero recoil momentum, the spin-orbit interaction in the distorted waves plays little role.
- Research Organization:
- Department of Physics and Astronomy, University of Maryland, College Park, Maryland 20742
- OSTI ID:
- 5773078
- Journal Information:
- Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 31:5; ISSN PRVCA
- Country of Publication:
- United States
- Language:
- English
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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA PARTICLES
ANALYZING POWER
BARYON REACTIONS
BEAMS
BERYLLIUM 9 TARGET
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
CLUSTER MODEL
COINCIDENCE SPECTROMETRY
COUPLING
CROSS SECTIONS
D STATES
DIFFERENTIAL CROSS SECTIONS
DIRECT REACTIONS
DISTORTED WAVE THEORY
ENERGY LEVELS
ENERGY RANGE
HADRON REACTIONS
HELIUM 2
HELIUM ISOTOPES
IMPULSE APPROXIMATION
INTERMEDIATE COUPLING
ISOTOPES
KNOCK-OUT REACTIONS
L-S COUPLING
LIGHT NUCLEI
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 100-1000
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
POLARIZED BEAMS
PROTON REACTIONS
QUASI-FREE REACTIONS
S STATES
SPECTROSCOPIC FACTORS
TARGETS