Table 2
Angles between the incident ion beam and the normal to the four pyramids' planes for ϕ = 45°.
| Ion beam incidence angle α | Angle between incident ion beam and normal to the pyramid planes | ||
|---|---|---|---|
| θ1 | θ2 = θ4 | θ3 | |
| 36° | 18.7 | 62.2 | 90.7 |
| 42° | 12.7 | 64.6 | 96.7 |
| 64° | 9.3 | 75.3 | 118.7 |
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