Nuclide reference
Pa-233 — Protactinium-233
Pa-233 की half-life 26.975 d है। मुख्य decay mode: β⁻ decay → U-233 (100%)।
Identification
- तत्व
- Protactinium (Pa)
- Atomic number Z
- 91
- Mass number A
- 233
- State
- Radioactive
Key quantities
- Half-life
- 26.975 d
- विशिष्ट गतिविधि
- 7.687e+14 Bq/g
- Gamma constant Γ
- —
- परिवहन के लिए A1 / A2 (SSR-6)
- 5 TBq / 0.7 TBq
- D-value (НП-067-24)
- 0.4 TBq
Decay modes
- β⁻ decay → U-233 — 100 %
Main gamma lines
| Energy, keV | Yield, % |
|---|---|
| 13.6 · X-ray line | 43 |
| 311.904 | 38.5 |
| 98.436 · X-ray line | 16.9 |
| 300.129 | 6.63 |
| 340.476 | 4.45 |
| 86.595 | 1.95 |
| 415.764 | 1.733 |
| 398.492 | 1.391 |
| 75.269 | 1.315 |
| 103.86 | 0.854 |
Lines of the bare nuclide (ENDF/B-VIII.0), without daughter ingrowth.
Alpha and beta particles
| Radiation | Energy, keV | Yield, % |
|---|---|---|
| β⁻, E max | 154.34 | 26.7 |
| 229.62 | 26 | |
| 258.2 | 24 | |
| 171.61 | 16.2 |
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.