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Table 1 Parameters used to define the surface evolution

From: Stability and symmetry of ion-induced surface patterning

Parameter Description Quantity Units
J Ion flux 5×1021 [m] −2[s] −1
ε Ion energy 300 [eV]
a Ion penetration depth 2×10−9 [m]
β Collision cascade dimension 1×10−9 [m]
D 0 Surface diffusivity 2.4025×10−7 [m] −2
γ Surface free energy density 2.9 [J]/[m] −2
Ω Atomic volume 1.5825×10−29 [m] 3
ρ s Atomic surface density 7.0811×1018 [m] −2
T Temperature 500 [K]