Nuclide reference
Cd-115m — Cadmium-115m
The half-life of Cd-115m is 44.56 d. Main decay mode: β⁻ decay to In-115 (99.99%).
Identification
- Element
- Cadmium (Cd)
- Atomic number Z
- 48
- Mass number A
- 115
- State
- Radioactive
Key quantities
- Half-life
- 44.56 d
- Specific activity
- 9.428e+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)
- 3 TBq
Decay modes
Main gamma lines
| Energy, keV | Yield, % |
|---|---|
| 933.838 | 2 |
| 1,290.59 | 0.89 |
| 484.471 | 0.29 |
| 1,132.57 | 0.0856 |
| 158.027 | 0.01702 |
| 1,448.78 | 0.017 |
| 492.351 | 0.0096 |
| 105.2 | 0.00442 |
| 316.201 | 0.00248 |
| 1,418.24 | 0.00184 |
Lines of the bare nuclide (ENDF/B-VIII.0), without daughter ingrowth.
Alpha and beta particles
| Radiation | Energy, keV | Yield, % |
|---|---|---|
| β⁻, E max | 1,627 | 97 |
| 693.16 | 1.7 | |
| 336.4 | 0.9 | |
| 208.73 | 0.3 |
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.