Influence of correlations on the trajectories of zeroes of the matrix elements for bound–bound and bound–free transitions in electron scattering
2006
Abstract The topology of the trajectories of the zeroes of the electron scattering matrix elements has been obtained in the Born approximation. At small-momentum transfer, K the behaviour of the trajectories depends on the positions and the number of Cooper minima. We demonstrate strong correlation effects in this K area. At the high momentum, the positions of the zeroes depend only slightly on the energy transfer to the atomic electron, and correlation effects are not important.
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