Nuclide reference
Eu-156 — Europium-156
Eu-156 की half-life 15.19 d है। मुख्य decay mode: β⁻ decay → Gd-156 (100%)।
Identification
- तत्व
- Europium (Eu)
- Atomic number Z
- 63
- Mass number A
- 156
- State
- Radioactive
Key quantities
- Half-life
- 15.19 d
- विशिष्ट गतिविधि
- 2.039e+15 Bq/g
- Gamma constant Γ
- —
- परिवहन के लिए A1 / A2 (SSR-6)
- 0.7 TBq / 0.7 TBq
- D-value (НП-067-24)
- 0.05 TBq
Decay modes
- β⁻ decay → Gd-156 — 100 %
Main gamma lines
| Energy, keV | Yield, % |
|---|---|
| 811.77 | 9.7 |
| 88.97 | 8.439 |
| 1,230.71 | 7.983 |
| 1,153.67 | 6.79 |
| 1,242.42 | 6.601 |
| 42.997 · X-ray line | 6.49 |
| 646.29 | 6.279 |
| 723.47 | 5.418 |
| 1,065.14 | 4.922 |
| 1,154.08 | 4.734 |
Lines of the bare nuclide (ENDF/B-VIII.0), without daughter ingrowth.
Alpha and beta particles
| Radiation | Energy, keV | Yield, % |
|---|---|---|
| β⁻, E max | 2,449 | 32 |
| 483.09 | 29 | |
| 262.26 | 10.3 | |
| 422.4 | 5.7 |
For β⁻ the endpoint (maximum) energy of the spectrum is given. ENDF/B-VIII.0.
Related calculators
इसी element के अन्य isotopes
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.