Analyzing powers for mirror states in {sup 12}C({sup 6}Li,{sup 7}Li/{sup 7}Be) at E{sub {sup 6}Li}=50 MeV: Evaluation of channel coupling
- Department of Physics, Florida State University, Tallahassee, Florida 32306-3016 (United States)
A complete set (iT{sub 11},T{sub 20},T{sub 21},T{sub 22}) of analyzing powers (AP{close_quote}s) has been obtained for the single nucleon transfer reaction {sup 12}C({sup 6}Li,{sup 7}Li){sup 11}C. In addition, iT{sub 11} and T{sub 21} AP data have been obtained for {sup 12}C({sup 6}Li,{sup 7}Be){sup 11}B. A finite range distorted wave Born approximation calculation provides a qualitatively good description of the ground-state transfer data iT{sub 11}, but is out of phase at small angles. It describes the magnitude but not the detail of the rank-2 AP over the measured angular range. A coupled-channels Born approximation (CCBA) analysis describes the elastic, inelastic, and ground-state transfer reaction cross section and AP data well. The excited-state transfer cross section description is also good, but the AP data are less well described. CCBA calculations indicate that coupling to states in {sup 6}Li and {sup 12}C is not crucial to the description, but that coupling in the final state between the ground and first excited states of {sup 7}Li or {sup 7}Be is needed to describe the small-angle oscillations in the ground-state transfer iT{sub 11} data. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 496867
- Journal Information:
- Physical Review, C, Journal Name: Physical Review, C Journal Issue: 5 Vol. 55; ISSN 0556-2813; ISSN PRVCAN
- Country of Publication:
- United States
- Language:
- English
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