Angular momentum dependent absorption in Li6 scattering

D. E. Trcka, A. D. Frawley, K. W. Kemper, D. Robson, J. D. Fox, and E. G. Myers
Phys. Rev. C 41, 2134 – Published 1 May 1990
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Abstract

Measurements are reported for (a) 50 MeV Li6+12C elastic and inelastic scattering to the 2+ (4.44 MeV), 0+ (7.65 MeV), and 3 (9.64 MeV) states in C12, (b) 20 MeV Li6+12C elastic scattering, (c) 50 MeV Li6+16O elastic and inelastic scattering to the unresolved 0+/3 (6.05/6.13 MeV) and 2+/1 (6.92/7.12 MeV) states in O16, and (d) 50 MeV Li6+9Be elastic and inelastic scattering to the 5/2 (2.43 MeV) state in Be9. Data were measured out to approximately 100°c.m.. A mid-angle plateau characteristic of Li6 scattering in the 5–10 MeV/nucleon energy range is confirmed in the C12 and O16 scattering but is not so apparent in the Be9 scattering.

Two energy-dependent, six-parameter optical model potentials, both of which describe Li6+12C elastic scattering at Li6 bombarding energies of 11, 20, 24, 30, 50, 60, 99, 156, and 210 MeV through the forward angle region before the plateau, are coupled with an angular momentum dependent imaginary potential. The results show improved descriptions of the plateau region and back angle scattering and a better description of 30 MeV Li6+12C vector analyzing power data than has previously been published. The Li6+12C inelastic scattering data are described by distorted-wave-Born-approximation calculations. Results of a double folded analysis of Li6+12C elastic scattering at the above energies show a systematic variation of the double folded normalization, N, and the imaginary volume integral. Li6+16O, Be9 elastic scattering data are analyzed with optical model and double folded potentials and the inelastic scattering data are described with distorted-wave-Born-approximation calculations.

  • Received 1 November 1989

DOI:https://doi.org/10.1103/PhysRevC.41.2134

©1990 American Physical Society

Authors & Affiliations

D. E. Trcka, A. D. Frawley, K. W. Kemper, D. Robson, J. D. Fox, and E. G. Myers

  • Department of Physics, Florida State University, Tallahassee, Florida 32306

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Vol. 41, Iss. 5 — May 1990

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