Table 1
Detector parameters are provided for reference. Here V is the volume, ρ the density, m the mass, g the geometric factor, C the scaling factor calculated using equations (2), (3) and (4). In order to make sensible comparisons, we use phantoms of equal volume and equal mean path. The second last column contains the scaling factor C as defined with equations (2), (3), (4), while in the last column, the C factors are stated relative to C ICRU.
| Shape | Dimensions (cm) | V (cm3) | ρ (g cm−3) | m (g) | g (cm2) | C (cm3 g−1) | C/C ICRU | |
|---|---|---|---|---|---|---|---|---|
| Si | Slab | 0.0922 × 0.0922 × 0.0350 | 0.297 × 10−3 | 2.333 | 0.693 × 10−3 | π × 2a 2 = 0.0534 | 77.2 | 123 |
| H2O | Slab | 0.0922 × 0.0922 × 0.0350 | 0.297 × 10−3 | 0.997 | 0.296 × 10−3 | π × 2a 2 = 0.0534 | 180.6 | 287 |
| Si | Disc | r = 0.052, H = 0.0350 | 0.297 × 10−3 | 2.333 | 0.693 × 10−3 | π × 2r 2 = 0.0534 | 77.2 | 123 |
| H2O | Disc | r = 0.052, H = 0.0350 | 0.297 × 10−3 | 0.997 | 0.296 × 10−3 | π × 2r 2 = 0.0534 | 180.6 | 287 |
| Si | Sphere | r = 0.0414 | 0.297 × 10−3 | 2.333 | 0.693 × 10−3 | π × 4πr 2 = 0.0677 | 97.6 | 155 |
| H2O | Sphere | r = 0.0414 | 0.297 × 10−3 | 0.997 | 0.296 × 10−3 | π × 4πr 2 = 0.0677 | 228.3 | 362 |
| ICRU | Sphere | r = 15 | 14 137 | 0.997 | 14 095 | π × 4πr 2 = 8882.6 | 0.63 | 1 |
| CRaTER-μ | Slab | 0.5 × 0.5 × 0.025 | 6.25 × 10−3 | 2.333 | 14.6 × 10−3 | π × 2a 2 = 1.571 | 107.7 | 171 |
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