Nuclide reference
Tb-160 — Terbium-160
The half-life of Tb-160 is 72.3 d. Main decay mode: β⁻ decay to Dy-160 (100%).
Identification
- Element
- Terbium (Tb)
- Atomic number Z
- 65
- Mass number A
- 160
- State
- Radioactive
Key quantities
- Half-life
- 72.3 d
- Specific activity
- 4.176e+14 Bq/g
- Gamma constant Γ
- —
- A1 / A2 for transport (SSR-6, НП-053-16)
- 1 TBq / 0.6 TBq
- D-value (НП-067-24)
- 0.06 TBq
Decay modes
- β⁻ decay → Dy-160 — 100 %
Main gamma lines
| Energy, keV | Yield, % |
|---|---|
| 879.378 | 30.1 |
| 298.578 | 26.13 |
| 966.166 | 25.1 |
| 1,177.95 | 14.87 |
| 86.7877 | 13.15 |
| 45.999 · X-ray line | 10.76 |
| 962.311 | 9.813 |
| 1,271.87 | 7.444 |
| 45.209 · X-ray line | 6.024 |
| 197.034 | 5.183 |
Lines of the bare nuclide (ENDF/B-VIII.0), without daughter ingrowth.
Alpha and beta particles
| Radiation | Energy, keV | Yield, % |
|---|---|---|
| β⁻, E max | 570.35 | 45.4 |
| 868.93 | 27.9 | |
| 476.43 | 9.9 | |
| 786 | 6.45 |
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.