Nuclide reference
Cm-240 — Curium-240
Cm-240 की half-life 27 d है। मुख्य decay mode: α decay → Pu-236 (100%)।
Identification
- तत्व
- Curium (Cm)
- Atomic number Z
- 96
- Mass number A
- 240
- State
- Radioactive
Key quantities
- Half-life
- 27 d
- विशिष्ट गतिविधि
- 7.456e+14 Bq/g
- Gamma constant Γ
- —
- परिवहन के लिए A1 / A2 (SSR-6)
- 40 TBq / 0.02 TBq
- D-value (НП-067-24)
- 0.3 TBq
Decay modes
- α decay → Pu-236 — 100 %
Main gamma lines
| Energy, keV | Yield, % |
|---|---|
| 18.1429 · X-ray line | 5.416 |
| 14.2738 · X-ray line | 4.893 |
| 44.63 | 0.03895 |
| 158.35 | 0.004459 |
| 102.82 | 0.004438 |
Lines of the bare nuclide (ENDF/B-VIII.0), without daughter ingrowth.
Alpha and beta particles
| Radiation | Energy, keV | Yield, % |
|---|---|---|
| α | 6,290.5 | 71.1 |
| 6,247.7 | 28.9 | |
| 6,147 | 0.052 | |
| 5,989 | 0.014 |
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.