A strain analysis was made of an edge dislocation core, and the details of the Foreman dislocation model were considered. In order to examine the model, quantitative measurement of the strain field around an edge dislocation in Al was performed, and high-resolution transmission electron microscopy and geometrical phase analysis were used to map the strain field of the edge dislocation core in Al. The strain measurements were compared with the Foreman dislocation model, and this showed that they were in good agreement with each other when 0.7 < a < 1.5.

Experimental Verification of Foreman Dislocation Model. C.W.Zhao, Y.M.Xing, P.C.Bai: Chinese Physics B, 2009, 18, 2464-8