Contributions to the kinematical theory of diffraction contrast from screw dislocations
- 1 January 1968
- journal article
- research article
- Published by Wiley in Physica Status Solidi (b)
- Vol. 25 (2) , 679-689
- https://doi.org/10.1002/pssb.19680250221
Abstract
The images of screw dislocations have been evaluated with the kinematical theory of electron diffraction using numerical techniques. The advantage of this method is that the periodic term in the diffracted intensity can be treated. It is found that because of this periodic term a screw dislocation for which n = g · b = 1 will be nearly invisible for certain foil thicknesses, deviations from the Bragg angle, and dislocation positions in the foil. On the basis of these findings, it is proposed that errors in Burgers vector determinations are possible.Keywords
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