Nuclide reference
Rh-102 — Rhodium-102
The half-life of Rh-102 is 207.3 d. Main decay mode: β⁺ decay / electron capture to Ru-102 (78%).
Identification
- Element
- Rhodium (Rh)
- Atomic number Z
- 45
- Mass number A
- 102
- State
- Radioactive
Key quantities
- Half-life
- 207.3 d
- Specific activity
- 2.285e+14 Bq/g
- Gamma constant Γ
- —
- A1 / A2 for transport (SSR-6, НП-053-16)
- 0.5 TBq / 0.5 TBq
- D-value (НП-067-24)
- 0.03 TBq
Decay modes
- β⁺ decay / electron capture → Ru-102 — 78 %
- β⁻ decay → Pd-102 — 22 %
Main gamma lines
| Energy, keV | Yield, % |
|---|---|
| 475.06 | 45.93 |
| 510.999 · annihilation 511 keV | 29.93 |
| 19.28 · X-ray line | 23.11 |
| 19.151 · X-ray line | 12.18 |
| 628.05 | 4.493 |
| 468.58 | 2.895 |
| 1,103.16 | 2.895 |
| 556.6 | 1.971 |
| 680.66 | 0.5791 |
| 1,158.1 | 0.5791 |
Lines of the bare nuclide (ENDF/B-VIII.0), without daughter ingrowth.
Alpha and beta particles
| Radiation | Energy, keV | Yield, % |
|---|---|---|
| β⁻, E max | 1,150 | 20.02 |
| 593.4 | 1.98 | |
| β⁺, E max | 1,301 | 10.98 |
| 825.93 | 3.964 | |
| 357.33 | 0.01528 |
For β⁻ and 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 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.