Nuclide reference
Pb-205 — Lead-205
Pb-205 की half-life 17.3 million years है। मुख्य decay mode: electron capture → Tl-205 (100%)।
Identification
- तत्व
- Lead (Pb)
- Atomic number Z
- 82
- Mass number A
- 205
- State
- Radioactive
Key quantities
- Half-life
- 17.3 million years
- विशिष्ट गतिविधि
- 3,730,000 Bq/g
- Gamma constant Γ
- —
- परिवहन के लिए A1 / A2 (SSR-6)
- असीमित / असीमित
- D-value (НП-067-24)
- —
Decay modes
- electron capture → Tl-205 — 100 %
Main gamma lines
| Energy, keV | Yield, % |
|---|---|
| 10.256 · X-ray line | 10.88 |
| 12.2267 · X-ray line | 8.649 |
| 2.31136 · X-ray line | 5.12 |
| 14.6316 · X-ray line | 1.768 |
| 9.17666 · X-ray line | 1.008 |
Lines of the bare nuclide (ENDF/B-VIII.0), without daughter ingrowth.
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.