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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]