Nuclide reference
Tc-99 — Technetium-99
Tc-99 की half-life 211,100 years है। मुख्य decay mode: β⁻ decay → Ru-99 (100%)।
Identification
- तत्व
- Technetium (Tc)
- Atomic number Z
- 43
- Mass number A
- 99
- State
- Radioactive
Key quantities
- Half-life
- 211,100 years
- विशिष्ट गतिविधि
- 632,900,000 Bq/g
- Gamma constant Γ
- —
- परिवहन के लिए A1 / A2 (SSR-6)
- 40 TBq / 0.9 TBq
- D-value (НП-067-24)
- 30 TBq
Decay modes
- β⁻ decay → Ru-99 — 100 %
Main gamma lines
| Energy, keV | Yield, % |
|---|---|
| 89.5 | 0.00065 |
Lines of the bare nuclide (ENDF/B-VIII.0), without daughter ingrowth.
Alpha and beta particles
| Radiation | Energy, keV | Yield, % |
|---|---|---|
| β⁻, E max | 293.5 | 100 |
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।