发一篇透射电镜方面的论文

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The computation of many beam dynamical electron diffraction can be done numerically using rather
sophisticated computer programs so that the physical insight is often lost. It will be shown that, in a
crystal in zone orientation, the electrons are trapped in the atom columns which then acts as channels. In
this way a one to one correspondence between the electron wavefunction and the structure of the object is
maintained. This channeling approach enables to describe the diffraction in a much simpler way the
wavefunction is expanded in eigenfunctions of the Hamiltonian. For most kind of columns in a zone
axis oriëntatation only one bound state will occur which leads to a perfectly oscillatory motion of the
electron in the column which can be expressed in a very simple form. The validity is confirmed by
comparison with complete dynamical calculations.200881805828.pdf