Nuclide reference
Cm-248 — Curium-248
Cm-248 की half-life 348,000 years है। मुख्य decay mode: α decay → Pu-244 (91.61%)।
Identification
- तत्व
- Curium (Cm)
- Atomic number Z
- 96
- Mass number A
- 248
- State
- Radioactive
Key quantities
- Half-life
- 348,000 years
- विशिष्ट गतिविधि
- 153,300,000 Bq/g
- Gamma constant Γ
- —
- परिवहन के लिए A1 / A2 (SSR-6)
- 0.02 TBq / 0.0003 TBq
- D-value (НП-067-24)
- 0.005 TBq
Decay modes
- α decay → Pu-244 — 91.61 %
- spontaneous fission — 8.39 %
Main gamma lines
| Energy, keV | Yield, % |
|---|---|
| 18.1425 · X-ray line | 2.857 |
| 14.2737 · X-ray line | 2.589 |
| 44.2 | 0.01946 |
| 110.8 | 0.0059 |
Lines of the bare nuclide (ENDF/B-VIII.0), without daughter ingrowth.
Alpha and beta particles
| Radiation | Energy, keV | Yield, % |
|---|---|---|
| α | 5,078.4 | 75.03 |
| 5,034.9 | 16.52 | |
| 4,931.1 | 0.06962 |
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.