Nuclide reference
Pu-237 — Plutonium-237
The half-life of Pu-237 is 45.64 d. Main decay mode: electron capture to Np-237 (100%).
Identification
- Element
- Plutonium (Pu)
- Atomic number Z
- 94
- Mass number A
- 237
- State
- Radioactive
Key quantities
- Half-life
- 45.64 d
- Specific activity
- 4.467e+14 Bq/g
- Gamma constant Γ
- —
- A1 / A2 for transport (SSR-6, НП-053-16)
- 20 TBq / 20 TBq
- D-value (НП-067-24)
- 2 TBq
Decay modes
Main gamma lines
| Energy, keV | Yield, % |
|---|---|
| 101.057 · X-ray line | 20.83 |
| 13.9389 · X-ray line | 20.26 |
| 59.5409 | 3.28 |
| 26.3446 | 0.2214 |
| 33.196 | 0.07445 |
| 43.42 | 0.003936 |
| 42.704 | 0.002952 |
| 102.98 | 0.00105 |
| 280.4 | 0.0009156 |
| 298.89 | 0.0006611 |
Lines of the bare nuclide (ENDF/B-VIII.0), without daughter ingrowth.
Related calculators
Other isotopes of this element
Reference data vs computed valuesHalf-life, gamma lines and D-value are reference data (ENDF/B-VIII.0, НП-067-24).Gamma constant Γ is H*(10) at 1 m computed from ICRP-107 spectra (NIST µ_en/ρ, ICRP-74 Table A.21) including short-lived progeny in equilibrium (e.g. Cs-137/Ba-137m, Ra-226 series); specific activity uses molar mass M ≈ mass number A.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.