Nuclide reference
Br-76 — Bromine-76
The half-life of Br-76 is 16.2 h. Main decay mode: β⁺ decay / electron capture to Se-76 (100%).
Identification
- Element
- Bromine (Br)
- Atomic number Z
- 35
- Mass number A
- 76
- State
- Radioactive
Key quantities
- Half-life
- 16.2 h
- Specific activity
- 9.418e+16 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)
- 0.03 TBq
Decay modes
- β⁺ decay / electron capture → Se-76 — 100 %
Main gamma lines
| Energy, keV | Yield, % |
|---|---|
| 510.999 · annihilation 511 keV | 109.8 |
| 559.09 | 74 |
| 657.02 | 15.91 |
| 1,853.67 | 14.65 |
| 11.223 · X-ray line | 13.61 |
| 1,216.1 | 8.806 |
| 2,950.53 | 7.4 |
| 11.182 · X-ray line | 7.036 |
| 2,792.69 | 5.624 |
| 2,391.25 | 4.736 |
Lines of the bare nuclide (ENDF/B-VIII.0), without daughter ingrowth.
Alpha and beta particles
| Radiation | Energy, keV | Yield, % |
|---|---|---|
| β⁺, E max | 3,382 | 25.8 |
| 871.29 | 6.4 | |
| 3,941 | 6 | |
| 990.38 | 5.2 |
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.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.