Nuclide reference
Pm-151 — Promethium-151
Pm-151 की half-life 1.1833 d है। मुख्य decay mode: β⁻ decay → Sm-151 (100%)।
Identification
- तत्व
- Promethium (Pm)
- Atomic number Z
- 61
- Mass number A
- 151
- State
- Radioactive
Key quantities
- Half-life
- 1.1833 d
- विशिष्ट गतिविधि
- 2.704e+16 Bq/g
- Gamma constant Γ
- —
- परिवहन के लिए A1 / A2 (SSR-6)
- 2 TBq / 0.6 TBq
- D-value (НП-067-24)
- 0.2 TBq
Decay modes
- β⁻ decay → Sm-151 — 100 %
Main gamma lines
| Energy, keV | Yield, % |
|---|---|
| 340.08 | 22.5 |
| 40.119 · X-ray line | 14.59 |
| 167.75 | 8.325 |
| 39.524 · X-ray line | 8.06 |
| 275.21 | 6.75 |
| 717.72 | 4.05 |
| 445.68 | 4.005 |
| 177.16 | 3.825 |
| 240.09 | 3.825 |
| 104.84 | 3.51 |
Lines of the bare nuclide (ENDF/B-VIII.0), without daughter ingrowth.
Alpha and beta particles
| Radiation | Energy, keV | Yield, % |
|---|---|---|
| β⁻, E max | 842.09 | 42 |
| 1,019.2 | 7.9 | |
| 741.32 | 7.1 | |
| 364.37 | 6.1 |
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.