Eikonal expansion in electron scattering |
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Authors: | F Hachenberg R Rosenfelder |
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Institution: | 1. Institut für theoretische Physik, Universit?t Heidelberg, Deutschland 2. Institut für Kernphysik, KFA Jülich, Deutschland
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Abstract: | We extend a previously developed eikonal expansion method to the case of high-energy electron scattering from dynamic nuclei. Nuclear degrees of freedom can be included either by a DWBA-like expansion or by neglecting the nuclear excitation energies. The latter approach is considered in detail and applied to the elastic and inelastic scattering from deformed nuclei. The impact parameterT-matrix is calculated by diagonalizing the inelastic zeroth-order and first-order eikonal phases in the subspace of the nuclear rotational levels; static eikonal phases are included up to second order. For152Sm,154Sm coupled-channel calculations including three and four rotational states show large multi-step effects for the 0+→4+ and the 0+→6+ excitations compared to DWBA results. |
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