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FAC dimensions, and corrections for measurement of iodine-125 radiation.
| Diaphragm area | 0.7867 cm2 |
| Collector plate length | 7.0003 cm |
| Air attenuation length | 12.7 cm |
| Corrections: | |
| Air attenuation | 1.018 |
| Photor. scattering | 0.995 |
| Electron loss | 1.000 |
| Recombination | 1.000 |
