The optical potential of 6He in the eikonal approximation
Abstract The new data of the elastic scattering of 6 He+ 12 C at about 40 MeV/nucleon are analyzed in the eikonal approximation. The 6 He+ 12 C phase-shift function is evaluated completely without any ad hoc assumption by a Monte Carlo integration, which makes it possible to use a realistic 6-nucleon wave function for a halo nucleus 6 He. The effect of the breakup of 6 He on the elastic differential cross sections as well as the optical potential is studied at different energies from 40 to 800 MeV/nucleon.
Dynamical effects on the parallel momentum distributions of neutrons from halo breakup
In this paper we study the energy spectra and related parallel momentum distributions of the neutrons from the breakup of ${}^{11}\mathrm{Be}.$ Earlier papers on transfer to the continuum reactions have shown that the breakup amplitude reduces to a simple eikonal approximation in the limit of weakly bound projectiles. The aim is to establish a reliable method to obtain information on the structure of the halo from the experimental results which depend on the reaction mechanism. Theoretical results for the widths of the parallel momentum distributions and for the total breakup cross section are compared to recent experimental data.
Form factor for inelastic electron scattering from the 4.43-MeV level in 12C
Abstract The inelastic form factor for electron scattering from the 4.43-MeV level in 12C is calculated, using the wave functions obtained from a Projected Hartree-Fock calculation. There is a considerable enhancement compared with the predictions from the simple shell-model. The agreement with experiment is good for not too large values of the momentum transfer.