Nuclide reference
Bi-210m — Bismuth-210m
Bi-210m की half-life 3.04 million years है। मुख्य decay mode: α decay → Tl-206 (100%)।
Identification
- तत्व
- Bismuth (Bi)
- Atomic number Z
- 83
- Mass number A
- 210
- State
- Radioactive
Key quantities
- Half-life
- 3.04 million years
- विशिष्ट गतिविधि
- 20,720,000 Bq/g
- Gamma constant Γ
- —
- परिवहन के लिए A1 / A2 (SSR-6)
- 0.6 TBq / 0.02 TBq
- D-value (НП-067-24)
- 0.3 TBq
Decay modes
- α decay → Tl-206 — 100 %
Main gamma lines
| Energy, keV | Yield, % |
|---|---|
| 265.6 | 51 |
| 304.6 | 28.05 |
| 72.874 · X-ray line | 6.469 |
| 70.833 · X-ray line | 3.819 |
| 649.6 | 3.417 |
| 344.3 | 0.714 |
| 329.6 | 0.663 |
| 368.9 | 0.663 |
| 535.5 | 0.255 |
| 634.3 | 0.0102 |
Lines of the nuclide itself (ENDF/B-VIII.0).
Alpha and beta particles
| Radiation | Energy, keV | Yield, % |
|---|---|---|
| α | 4,946 | 55 |
| 4,909 | 39.5 | |
| 4,568 | 3.9 | |
| 4,582 | 1.4 | |
| β⁻, E max | 1,532.3 (Tl-206) | 99.89 |
| 365.9 (Tl-206) | 0.11 |
For β⁻ the endpoint (maximum) energy of the spectrum is given. ENDF/B-VIII.0. Includes daughter nuclides in equilibrium: Tl-206 (yield per decay of Bi-210m); the emitting nuclide is in brackets. Equilibrium is reached in about 29 min.
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।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.