Table 1 Comparison of intensities (Ei) and percentage attenuations δ E % of square-shaped (SQR), triangular (TRI) and the optimal (OPT) contour with respect to the circular (CIRC) taken as a basis
| Â | CIRC | TRI | SQR | OPT | ||||
|---|---|---|---|---|---|---|---|---|
Zi mm | Ei V/mm | δ Ei % | Ei V/mm | δ Ei % | Ei V/mm | δ Ei % | Ei V/mm | δ Ei % |
2 | 3.55 | - | 3.7 | 4 | 3.99 | 12 | 4.1 | 15 |
5 | 2.65 | - | 2.62 | -1 | 2.89 | 9 | 3.0 | 13 |
10 | 1.75 | - | 1.6 | -9 | 1.82 | 4 | 1.92 | 10 |
20 | 0.9 | - | 0.72 | -25 | 0.87 | -3 | 0.93 | 3 |
30 | 0.525 | - | 0.38 | -38 | 0.48 | -9 | 0.52 | -1 |
40 | 0.335 | - | 0.23 | -46 | 0.295 | -13 | 0.317 | -5.6 |
50 | 0.225 | - | 0.15 | -50 | 0.195 | -15 | 0.21 | -7.1 |
100 | 0.057 | - | 0.037 | -91 | 0.048 | -17 | 0.053 | -7.5 |