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Beyond the eikonal model for few-body systems

1997; American Institute of Physics; Volume: 55; Issue: 3 Linguagem: Inglês

10.1103/physrevc.55.r1018

1538-4497

Jim Al-Khalili, J. A. Tostevin, J. M. Brooke,

Atomic and Molecular Physics

A physical prescription to improve the accuracy of few-body Glauber model calculations of reactions involving loosely bound projectiles is presented in which the eikonal phase shift function of each projectile constituent is modified to account for curvature of its trajectory. Noneikonal effects due to both nuclear and Coulomb interactions are treated on an equal footing. The proposed method is assessed quantitatively by comparison with full quantum mechanical calculations in the case of ${}^{11}$Be+${}^{12}$C elastic scattering, treated as a three-body ${}^{10}$Be+$n$+target problem, at energies of 25 and 49.3 MeV/nucleon. Calculated cross-section angular distributions which include the noneikonal modifications are shown to be accurate to larger scattering angles, and for lower incident projectile energies.