Nuclide reference
Np-235 — Neptunium-235
Np-235 की half-life 1.0847 years है। मुख्य decay mode: electron capture → U-235 (100%)।
Identification
- तत्व
- Neptunium (Np)
- Atomic number Z
- 93
- Mass number A
- 235
- State
- Radioactive
Key quantities
- Half-life
- 1.0847 years
- विशिष्ट गतिविधि
- 5.189e+13 Bq/g
- Gamma constant Γ
- —
- परिवहन के लिए A1 / A2 (SSR-6)
- 40 TBq / 40 TBq
- D-value (НП-067-24)
- 100 TBq
Decay modes
Main gamma lines
| Energy, keV | Yield, % |
|---|---|
| 13.6086 · X-ray line | 15.1 |
| 16.9584 · X-ray line | 13.73 |
| 17.185 | 0.001014 |
| 25.64 | 0.0003718 |
| 18.05 | 0.00026 |
| 84.2 | 0.0001794 |
Lines of the bare nuclide (ENDF/B-VIII.0), without daughter ingrowth.
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.