Custom Nuclide — Γ Calculator
Upload an IAEA LiveChart CSV to calculate ΓH*(10) and ΓH'(0.07)
using the Cornejo et al. methodology (ICRU 57 / ICRP 74).
Methodology — Cornejo et al. (2006)
Γ = K × ∑i ( ni · h(Ei) )
| Γ | Dose rate constant [μSv · h−1 · GBq−1 · m2] — relates dose rate to activity at 1 m |
| ni | Photon yield per nuclear decay for emission i [dimensionless; intensity % ÷ 100] |
| h(Ei) | Fluence-to-ambient-dose-equivalent conversion coefficient at energy Ei [pSv · cm2], tabulated in ICRU 57 / ICRP 74 for H*(10) and H′(0.07) |
| Ei | Photon energy of emission i [MeV] — only emissions with Ei ≥ 20 keV and ni ≥ 0.01 %/decay are included (photon types G and X only) |
| K | Unit-conversion and geometry factor = 28.648 μSv · h−1 · GBq−1 · m2 / (pSv · cm2) — encodes 1/(4π), GBq→s−1, pSv→μSv, cm−2→m−2, and s→h |
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