Nuclide reference
Co-60 — Cobalt-60
Co-60 की half-life 5.2711 years है। मुख्य decay mode: β⁻ decay → Ni-60 (100%)।
Identification
- तत्व
- Cobalt (Co)
- Atomic number Z
- 27
- Mass number A
- 60
- State
- Radioactive
Key quantities
- Half-life
- 5.2711 years
- विशिष्ट गतिविधि
- 4.182e+13 Bq/g
- Gamma constant Γ (H*(10))
- 0.353 µSv·m²/(MBq·h)
- Dose rate, 1 GBq at 1 m
- ≈ 353 µSv/h
- परिवहन के लिए A1 / A2 (SSR-6)
- 0.4 TBq / 0.4 TBq
- D-value (НП-067-24)
- 0.03 TBq
Decay modes
- β⁻ decay → Ni-60 — 100 %
Main gamma lines
| Energy, keV | Yield, % |
|---|---|
| 1,332.49 | 99.98 |
| 1,173.23 | 99.85 |
| 826.1 | 0.0076 |
| 347.14 | 0.0075 |
| 2,158.57 | 0.0012 |
Lines of the bare nuclide (ENDF/B-VIII.0), without daughter ingrowth.
Alpha and beta particles
| Radiation | Energy, keV | Yield, % |
|---|---|---|
| β⁻, E max | 318.15 | 99.88 |
| 1,491.4 | 0.12 |
For β⁻ the endpoint (maximum) energy of the spectrum is given. ENDF/B-VIII.0.
Related calculators
इसी element के अन्य isotopes
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.