Nuclide reference
Bk-247 — Berkelium-247
Bk-247 की half-life 1,380 years है। मुख्य decay mode: α decay → Am-243 (100%)।
Identification
- तत्व
- Berkelium (Bk)
- Atomic number Z
- 97
- Mass number A
- 247
- State
- Radioactive
Key quantities
- Half-life
- 1,380 years
- विशिष्ट गतिविधि
- 3.881e+10 Bq/g
- Gamma constant Γ
- —
- परिवहन के लिए A1 / A2 (SSR-6)
- 8 TBq / 0.0008 TBq
- D-value (НП-067-24)
- 0.08 TBq
Decay modes
- α decay → Am-243 — 100 %
Main gamma lines
| Energy, keV | Yield, % |
|---|---|
| 84 | 40 |
| 265 | 30 |
| 106.47 · X-ray line | 11.05 |
| 14.6132 · X-ray line | 8.402 |
| 41.8 | 1.3 |
Lines of the bare nuclide (ENDF/B-VIII.0), without daughter ingrowth.
Alpha and beta particles
| Radiation | Energy, keV | Yield, % |
|---|---|---|
| α | 5,531 | 45 |
| 5,710 | 17 | |
| 5,688 | 13 | |
| 5,501 | 7 |
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 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.