Nuclide reference
I-122 — Iodine-122
I-122 की half-life 3.63 min है। मुख्य decay mode: β⁺ decay / electron capture → Te-122 (100%)।
Identification
- तत्व
- Iodine (I)
- Atomic number Z
- 53
- Mass number A
- 122
- State
- Radioactive
Key quantities
- Half-life
- 3.63 min
- विशिष्ट गतिविधि
- 1.571e+19 Bq/g
- Gamma constant Γ
- —
- D-value (НП-067-24)
- —
Decay modes
- β⁺ decay / electron capture → Te-122 — 100 %
Main gamma lines
| Energy, keV | Yield, % |
|---|---|
| 510.999 · annihilation 511 keV | 156.3 |
| 564.119 | 18 |
| 27.472 · X-ray line | 8.829 |
| 27.202 · X-ray line | 4.743 |
| 692.794 | 1.355 |
| 793.278 | 1.327 |
| 683.647 | 0.7956 |
| 1,746.93 | 0.333 |
| 1,256.9 | 0.2808 |
| 2,192.29 | 0.2664 |
Lines of the bare nuclide (ENDF/B-VIII.0), without daughter ingrowth.
Alpha and beta particles
| Radiation | Energy, keV | Yield, % |
|---|---|---|
| β⁺, E max | 3,212 | 67 |
| 2,647.9 | 10 | |
| 1,854.6 | 0.6 | |
| 1,955.1 | 0.31 |
For β⁺ the endpoint (maximum) energy of the spectrum is given. ENDF/B-VIII.0.
Related calculators
इसी element के अन्य isotopes
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.