Nuclide reference
Cf-252 — Californium-252
Cf-252 की half-life 2.6449 years है। मुख्य decay mode: α decay → Cm-248 (96.91%)।
Identification
- तत्व
- Californium (Cf)
- Atomic number Z
- 98
- Mass number A
- 252
- State
- Radioactive
Key quantities
- Half-life
- 2.6449 years
- विशिष्ट गतिविधि
- 1.985e+13 Bq/g
- Gamma constant Γ
- —
- परिवहन के लिए A1 / A2 (SSR-6)
- 0.1 TBq / 0.003 TBq
- D-value (НП-067-24)
- 0.02 TBq
Decay modes
- α decay → Cm-248 — 96.91 %
- spontaneous fission — 3.092 %
Main gamma lines
| Energy, keV | Yield, % |
|---|---|
| 19.552 · X-ray line | 7.1 |
| 43.399 | 0.01483 |
| 100.2 | 0.0126 |
| 160 | 0.001938 |
Lines of the bare nuclide (ENDF/B-VIII.0), without daughter ingrowth.
Alpha and beta particles
| Radiation | Energy, keV | Yield, % |
|---|---|---|
| α | 6,118.2 | 81.6 |
| 6,075.8 | 15.21 | |
| 5,976.6 | 0.2326 |
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.