Fig. 7
From: Cell structure formation in a two-dimensional density-based dislocation dynamics model
Cell structures in LiF; top: birefringerence image of the (001) surface of a (100) oriented single crystal showing slip activity on the orthogonal \((1\bar {1}0)[110]\) and \((110)[1\bar {1}0]\) slip systems, courtesy of J. Schwerdtfeger; bottom: etch pit pattern on a (100) cross section after deformation under a creep load of σ=5.9 MPa (τ=2.45 MPa) to a creep strain of εp=0.05 (γ=0.1), deformation temperature 773K, averaged dislocation density ρ=3×1011 m −2 (Streb and Reppich 1973); the insert has been taken from the simulation shown in Fig. 3 and scaled according to the average dislocation density in the experimental image