Mechanism of the heavy-ion charge exchange reaction /sup 12/C(/sup 12/C,/sup 12/N)/sup 12/B at 35 MeV/nucleon

Journal Article · Tue Apr 01 04:00:00 EST 1986 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.33.1333· OSTI ID:6005147

Winfield, J S; Anantaraman, N; Austin, S M; Harwood, L H; van der Plicht, J; Wu, H; Zeller, A F

The heavy-ion charge exchange reaction /sup 12/C(/sup 12/C,/sup 12/N)/sup 12/ B has been studied at E(/sup 12/C) = 35 MeV/nucleon. Angular distributions in the range 3.7--12.1/sup 0/ (c.m.) have been measured for the 1/sup +/ (0.0 MeV), 2/sup +/ (0.95 MeV), 2/sup -/ (1.67 MeV), and 4/sup -/,2/sup -/ (4.5 MeV) states in /sup 12/B. A broad peak at 7.8 MeV excitation was also observed. Microscopic one-step distorted-wave Born approximation calculations yield V/sub sigmatau/ strengths > or =2 times those obtained in (p,n) reactions at similar energies per nucleon. Although this is significantly smaller than V/sub sigmatau/ values obtained in other heavy-ion charge exchange studies, mostly carried out at energies less than 10 MeV/nucleon, it is concluded that the reaction mechanism is still dominated by sequential transfer (two-step) processes at 35 MeV/nucleon. A rough estimate indicates that one-step processes will dominate at bombarding energies above about 50 MeV/nucleon.

• Research Organization: National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824
• OSTI ID: 6005147
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 33:4; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
ANGULAR MOMENTUM
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
BORN APPROXIMATION
BORON 12
BORON ISOTOPES
CARBON 12 REACTIONS
CARBON 12 TARGET
CHARGE-EXCHANGE REACTIONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
DISTRIBUTION
DWBA
ENERGY LEVELS
ENERGY RANGE
EXPERIMENTAL DATA
HEAVY ION REACTIONS
INFORMATION
ISOTOPES
LIGHT NUCLEI
MEV RANGE
MEV RANGE 100-1000
NITROGEN 12
NITROGEN ISOTOPES
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
PARITY
PARTICLE PROPERTIES
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SPIN
TARGETS