Alpha-particle spectroscopic strengths using the (p,p. cap alpha. ) reaction at 101. 5 MeV

Journal Article · Sun Apr 01 04:00:00 EST 1984 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.29.1273· OSTI ID:6777365

Carey, T A; Roos, P G; Chant, N S; Nadasen, A; Chen, H L

Proton-alpha particle coincidence spectra from 101.5 MeV (p,p..cap alpha..) reactions on /sup 16/O, /sup 20/Ne, /sup 24/Mg, /sup 28/Si, /sup 32/S, /sup 40/Ca, /sup 48/Ti, /sup 54/Fe, and /sup 66/Zn have been obtained in a coplanar geometry at quasifree angle pairs for each target. A missing energy resolution of < or approx. =450 keV was sufficient to separate the low-lying states of the residual nuclides. Data for ground-state transitions, and for eight excited states were obtained and compared with distorted-wave impulse approximation calculations. The target-mass dependence of the resultant relative ground-state spectroscopic factors is reasonably consistent with that obtained from (/sup 6/Li,d) reactions. The corresponding absolute spectroscopic factors are larger than shell-model predictions, but sensitive to the bound-state parametrization. However, the spectral shapes do constrain the range of possible bound-state rms radii. The fits to the excited states are less satisfactory.

• Research Organization: Department of Physics and Astronomy, University of Maryland, College Park, Maryland 20742
• OSTI ID: 6777365
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 29:4; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA PARTICLES
ANGULAR DISTRIBUTION
BARYON REACTIONS
BORN APPROXIMATION
BOUND STATE
CALCIUM 40 TARGET
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
DIRECT REACTIONS
DISTRIBUTION
DWBA
ENERGY RANGE
HADRON REACTIONS
IMPULSE APPROXIMATION
IRON 54 TARGET
KNOCK-OUT REACTIONS
MAGNESIUM 24 TARGET
MEV RANGE
MEV RANGE 100-1000
NEON 20 TARGET
NUCLEAR REACTIONS
NUCLEON REACTIONS
OXYGEN 16 TARGET
PROTON REACTIONS
QUASI-FREE REACTIONS
SILICON 28 TARGET
SPECTROSCOPIC FACTORS
SULFUR 32 TARGET
TARGETS
TITANIUM 48 TARGET
ZINC 66 TARGET