Nuclide reference
Y-88 — Yttrium-88
The half-life of Y-88 is 106.63 d. Main decay mode: β⁺ decay / electron capture to Sr-88 (100%).
Identification
- Element
- Yttrium (Y)
- Atomic number Z
- 39
- Mass number A
- 88
- State
- Radioactive
Key quantities
- Half-life
- 106.63 d
- Specific activity
- 5.149e+14 Bq/g
- Gamma constant Γ (H*(10))
- 0.3613 µSv·m²/(MBq·h)
- Dose rate, 1 GBq at 1 m
- ≈ 361 µSv/h
- A1 / A2 for transport (SSR-6, НП-053-16)
- 0.4 TBq / 0.4 TBq
- D-value (НП-067-24)
- 0.03 TBq
Decay modes
- β⁺ decay / electron capture → Sr-88 — 100 %
Main gamma lines
| Energy, keV | Yield, % |
|---|---|
| 1,836.06 | 99.24 |
| 898.042 | 93.68 |
| 14.165 · X-ray line | 34.11 |
| 14.098 · X-ray line | 17.77 |
| 2,734 | 0.7145 |
| 510.999 · annihilation 511 keV | 0.42 |
| 850.6 | 0.0655 |
| 1,382.2 | 0.02084 |
| 3,219.7 | 0.007046 |
Lines of the bare nuclide (ENDF/B-VIII.0), without daughter ingrowth.
Alpha and beta particles
| Radiation | Energy, keV | Yield, % |
|---|---|---|
| β⁺, E max | 764.52 | 0.21 |
For β⁺ the endpoint (maximum) energy of the spectrum is given. ENDF/B-VIII.0.
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.Dose rate example: point source, no shielding or scatter, Ḣ = Γ·A/r².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.