Nuclide reference
Pm-145 — Promethium-145
Pm-145 की half-life 17.7 years है। मुख्य decay mode: electron capture → Nd-145 (100%)।
Identification
- तत्व
- Promethium (Pm)
- Atomic number Z
- 61
- Mass number A
- 145
- State
- Radioactive
Key quantities
- Half-life
- 17.7 years
- विशिष्ट गतिविधि
- 5.154e+12 Bq/g
- Gamma constant Γ
- —
- परिवहन के लिए A1 / A2 (SSR-6)
- 30 TBq / 10 TBq
- D-value (НП-067-24)
- 10 TBq
Decay modes
- electron capture → Nd-145 — 100 %
- α decay → Pr-141 — 2.8e-7 %
Main gamma lines
| Energy, keV | Yield, % |
|---|---|
| 37.361 · X-ray line | 40.28 |
| 36.848 · X-ray line | 22.05 |
| 72.4 | 2.2 |
| 67.2 | 0.682 |
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.