(/sup 16/O,/sup 14/C) reaction on some even N = 28 isotones

Journal Article · Sun Jan 01 04:00:00 EST 1989 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.39.139· OSTI ID:6793724

Ogilvie, C A; Nelson, J M; Barker, D; Bennett, S J; Fulton, B R; Hoath, S D; Mannion, M C; Woods, P J; Zybert, L; Zybert, R; others, and

The two-proton stripping reaction (/sup 16/O,/sup 14/C) has been measured on some of the even N = 28 isotones: /sup 48/Ca, /sup 52/Cr at 160 MeV and /sup 50/Ti, /sup 54/Fe at 150 MeV bombarding energy. States of excitation up to 10 MeV have been extracted over an angular range 4/sup 0/--10/sup 0/ in the center-of-mass system. The angular distributions have been compared to transfer calculations that consist of both the simultaneous and successive transfer processes and were performed in exact finite range. Only the simple, (1f/sub 7/2/)/sup n/ dominated states have been analyzed to investigate whether this reaction mechanism can account for the data. The absolute magnitude of the /sup 48/Ca(/sup 16/O,/sup 14/C) /sup 50/Ti ground-state reaction has been reproduced. However, the experimental and theoretical uncertainties are larger than the sensitivity to different structure descriptions of the target/residual nuclei. Therefore, we have not been able to probe the pairing correlations in the ground state of /sup 50/Ti. The calculations fail to reproduce the magnitude of the transitions to other states in /sup 50/Ti. Similar problems occurred for the other reactions, leading to /sup 52/Cr, /sup 54/Fe, and /sup 56/Ni. The discrepancy ranges from a factor of 2 to nearly 30. In addition, there are phase differences between the calculations and the measured cross sections. Some systematics of the disagreement are investigated. It is suggested that the simultaneous/successive mechanism can account for the data when the transition is kinematically well matched. In cases of poor matching, inelastic/transfer mechanisms may be kinematically enhanced and contribute to the cross section with significant strength.

• Research Organization: Department of Physics, University of Birmingham, Birmingham B15 2TT, United Kingdom
• OSTI ID: 6793724
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 39:1; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651520* -- Nuclear Properties & Reactions
A=39-58
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALCIUM 48 TARGET
CARBON 14
CARBON ISOTOPES
CHARGED-PARTICLE REACTIONS
CHROMIUM 52 TARGET
CROSS SECTIONS
DATA
DIRECT REACTIONS
DISTRIBUTION
ELASTIC SCATTERING
ENERGY LEVELS
ENERGY RANGE
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
FORM FACTORS
HEAVY ION REACTIONS
INFORMATION
IRON 54 TARGET
ISOTONIC NUCLEI
ISOTOPES
LIGHT NUCLEI
MEV RANGE
MEV RANGE 100-1000
MULTI-NUCLEON TRANSFER REACTIONS
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
OXYGEN 16 REACTIONS
PARTICLE PROPERTIES
RADIOISOTOPES
SCATTERING
STRIPPING
TARGETS
TITANIUM 50 TARGET
TRANSFER REACTIONS
TWO-NUCLEON TRANSFER REACTIONS
YEARS LIVING RADIOISOTOPES