Nuclide reference
Gd-159 — Gadolinium-159
Gd-159 की half-life 18.479 h है। मुख्य decay mode: β⁻ decay → Tb-159 (100%)।
Identification
- तत्व
- Gadolinium (Gd)
- Atomic number Z
- 64
- Mass number A
- 159
- State
- Radioactive
Key quantities
- Half-life
- 18.479 h
- विशिष्ट गतिविधि
- 3.946e+16 Bq/g
- Gamma constant Γ
- —
- परिवहन के लिए A1 / A2 (SSR-6)
- 3 TBq / 0.6 TBq
- D-value (НП-067-24)
- 2 TBq
Decay modes
- β⁻ decay → Tb-159 — 100 %
Main gamma lines
| Energy, keV | Yield, % |
|---|---|
| 363.543 | 11.78 |
| 44.483 · X-ray line | 10.7 |
| 43.746 · X-ray line | 5.969 |
| 58 | 2.486 |
| 348.281 | 0.2393 |
| 226.041 | 0.217 |
| 580.808 | 0.06832 |
| 305.549 | 0.06196 |
| 79.5132 | 0.04677 |
| 290.287 | 0.03228 |
Lines of the bare nuclide (ENDF/B-VIII.0), without daughter ingrowth.
Alpha and beta particles
| Radiation | Energy, keV | Yield, % |
|---|---|---|
| β⁻, E max | 970.5 | 57.8 |
| 912.5 | 29.6 | |
| 606.95 | 12.19 | |
| 622.22 | 0.315 |
For β⁻ the endpoint (maximum) energy of the spectrum is given. ENDF/B-VIII.0.
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.