Nuclide reference
Cm-244 — Curium-244
Cm-244 की half-life 18.11 years है। मुख्य decay mode: α decay → Pu-240 (100%)।
Identification
- तत्व
- Curium (Cm)
- Atomic number Z
- 96
- Mass number A
- 244
- State
- Radioactive
Key quantities
- Half-life
- 18.11 years
- विशिष्ट गतिविधि
- 2.993e+12 Bq/g
- Gamma constant Γ
- —
- परिवहन के लिए A1 / A2 (SSR-6)
- 20 TBq / 0.002 TBq
- D-value (НП-067-24)
- 0.05 TBq
Decay modes
- α decay → Pu-240 — 100 %
- spontaneous fission — 0.000138 %
Main gamma lines
| Energy, keV | Yield, % |
|---|---|
| 18.1428 · X-ray line | 4.444 |
| 14.2738 · X-ray line | 4.019 |
| 42.824 | 0.02635 |
| 98.86 | 0.00142 |
| 152.63 | 0.001054 |
Lines of the bare nuclide (ENDF/B-VIII.0), without daughter ingrowth.
Alpha and beta particles
| Radiation | Energy, keV | Yield, % |
|---|---|---|
| α | 5,804.8 | 76.9 |
| 5,762.6 | 23.1 | |
| 5,664 | 0.0204 |
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.