Li7+12C: Excitation of projectile and target states and single-nucleon stripping

J. Cook, M. N. Stephens, K. W. Kemper, and A. K. Abdallah
Phys. Rev. C 33, 915 – Published 1 March 1986
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Abstract

Detailed cross sections out to 170° c.m. for elastic scattering and the excitation of states in Li7 and in C12 have been determined by bombarding C12 targets with 34 MeV Li7 beams and Li7 targets with C12 beams at the same c.m. energy. The present results show that the direct breakup total cross section for Li7 is about 25 times larger than the sequential total cross section to the (7/2) 4.63 MeV state of Li7. In addition, single neutron and proton stripping angular distributions have been measured. The distorted-wave Born approximation is unsatisfactory for the excitation of the 1/2 0.48 MeV state of Li7, the 2+ 4.44 MeV state of C12, and the mutual excitation of these two states. Coupled channels calculations, using the rotation-vibration model, describe the excitation of states in C12 well and find K=3 for the 3 9.64 MeV state. Poor fits are obtained to the projectile and mutual excitation data with coupled channels calculations. Finite range distorted-wave Born approximation calculations of single-nucleon stripping are in good agreement with the data. Extracted deformation lengths and spectroscopic factors are consistent with those from other studies.

  • Received 29 October 1985

DOI:https://doi.org/10.1103/PhysRevC.33.915

©1986 American Physical Society

Authors & Affiliations

J. Cook

  • Department of Physics, University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia

M. N. Stephens and K. W. Kemper

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

A. K. Abdallah

  • Department of Physics, University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia

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Vol. 33, Iss. 3 — March 1986

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