Nuclide reference
Sb-126 — Antimony-126
The half-life of Sb-126 is 12.35 d. Main decay mode: β⁻ decay to Te-126 (100%).
Identification
- Element
- Antimony (Sb)
- Atomic number Z
- 51
- Mass number A
- 126
- State
- Radioactive
Key quantities
- Half-life
- 12.35 d
- Specific activity
- 3.105e+15 Bq/g
- Gamma constant Γ
- —
- A1 / A2 for transport (SSR-6, НП-053-16)
- 0.4 TBq / 0.4 TBq
- D-value (НП-067-24)
- 0.02 TBq
Decay modes
- β⁻ decay → Te-126 — 100 %
Main gamma lines
| Energy, keV | Yield, % |
|---|---|
| 666.5 | 99.6 |
| 695 | 99.6 |
| 414.7 | 83.27 |
| 720.7 | 53.78 |
| 697 | 28.88 |
| 856.8 | 17.63 |
| 593.2 | 7.47 |
| 989.6 | 6.773 |
| 573.9 | 6.673 |
| 296.5 | 4.482 |
Lines of the bare nuclide (ENDF/B-VIII.0), without daughter ingrowth.
Alpha and beta particles
| Radiation | Energy, keV | Yield, % |
|---|---|---|
| β⁻, E max | 476.3 | 29 |
| 1,893.9 | 20 | |
| 1,173.3 | 16 | |
| 599.2 | 8.4 |
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 is H*(10) at 1 m computed from ICRP-107 spectra (NIST µ_en/ρ, ICRP-74 Table A.21) including short-lived progeny in equilibrium (e.g. Cs-137/Ba-137m, Ra-226 series); specific activity uses molar mass M ≈ mass number A.