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The calculated dose rate constant values in this study and those reported in the literature, dimensions are in (mm)
| Source model | Active length | Total length | Active diameter | External diameter | Capsule thickness (material) | Λ (cGy h−1 U−1) |
|---|---|---|---|---|---|---|
| Model 41409 | 3.5 | 4.80 | 0.073 | 0.90 | 0.17 (SS) | 1.19 ± 0.03 |
| Model M4211 | 6.0 | 4.90 | 0.070 | 1.15 | 0.20 (SS) | 1.12 ± 0.04 |
| Model M4213 | 6.0 | 4.60 | 0.070 | 1.15 | 0.20 (SS) | 1.14 ± 0.04 |
| A new model (this work) | 2.6 | 4.73 | 0.060 | 0.90 | 0.15 (SS) & 0.06 (Ti) | 1.21 ± 0.03 |
