Nuclide reference
Ir-192 — Iridium-192
Ir-192 की half-life 73.827 d है। मुख्य decay mode: β⁻ decay → Pt-192 (95.13%)।
Identification
- तत्व
- Iridium (Ir)
- Atomic number Z
- 77
- Mass number A
- 192
- State
- Radioactive
Key quantities
- Half-life
- 73.827 d
- विशिष्ट गतिविधि
- 3.408e+14 Bq/g
- Gamma constant Γ (H*(10))
- 0.1392 µSv·m²/(MBq·h)
- Dose rate, 1 GBq at 1 m
- ≈ 139 µSv/h
- परिवहन के लिए A1 / A2 (SSR-6)
- 1 TBq / 0.6 TBq
- D-value (НП-067-24)
- 0.08 TBq
Decay modes
- β⁻ decay → Pt-192 — 95.13 %
- β⁺ decay / electron capture → Os-192 — 4.87 %
Main gamma lines
| Energy, keV | Yield, % |
|---|---|
| 316.506 | 82.71 |
| 468.069 | 47.81 |
| 308.455 | 29.68 |
| 295.957 | 28.72 |
| 604.411 | 8.2 |
| 612.462 | 5.34 |
| 66.831 · X-ray line | 4.555 |
| 588.581 | 4.517 |
| 205.794 | 3.34 |
| 484.575 | 3.187 |
Lines of the bare nuclide (ENDF/B-VIII.0), without daughter ingrowth.
Alpha and beta particles
| Radiation | Energy, keV | Yield, % |
|---|---|---|
| β⁻, E max | 675.12 | 48 |
| 538.78 | 41.43 | |
| 258.65 | 5.6 | |
| 81.68 | 0.1027 |
For β⁻ the endpoint (maximum) energy of the spectrum is given. ENDF/B-VIII.0.
Related calculators
Reference data vs computed valuesHalf-life, gamma lines and D-value are reference data (ENDF/B-VIII.0, НП-067-24).Gamma constant Γ 1 m पर H*(10) है, ICRP-107 spectra (NIST µ_en/ρ, ICRP-74 Table A.21) से गणना की गई, equilibrium में short-lived progeny सहित (जैसे Cs-137/Ba-137m, Ra-226 series); specific activity molar mass M ≈ mass number A का उपयोग करती है।Dose rate example: point source, no shielding or scatter, Ḣ = Γ·A/r².K-series X-ray energies are from NIST SRD 128 (Deslattes et al., 2003): in ENDF/B-VIII.0 they are given to 1 % and shifted by up to 0.7 keV for heavy elements. L-series lines and all yields are ENDF/B-VIII.0.