Nuclide reference
Hg-197m — Mercury-197m
Hg-197m की half-life 23.8 h है। मुख्य decay mode: isomeric transition → Hg-197 (91.4%)।
Identification
- तत्व
- Mercury (Hg)
- Atomic number Z
- 80
- Mass number A
- 197
- State
- Radioactive
Key quantities
- Half-life
- 23.8 h
- विशिष्ट गतिविधि
- 2.473e+16 Bq/g
- Gamma constant Γ
- —
- परिवहन के लिए A1 / A2 (SSR-6)
- 10 TBq / 0.4 TBq
- D-value (НП-067-24)
- 0.7 TBq
Decay modes
Main gamma lines
| Energy, keV | Yield, % |
|---|---|
| 133.98 | 33.9 |
| 70.819 · X-ray line | 16.4 |
| 9.97695 · X-ray line | 14.7 |
| 279.01 (Au-197m) | 6.098 |
| 164.97 | 0.2712 |
| 130.2 (Au-197m) | 0.2683 |
| 201.6 (Au-197m) | 0.09757 |
| 77.351 (Au-197m) | 0.02625 |
Includes daughter nuclides in equilibrium: Au-197m (yield per decay of Hg-197m); the emitting nuclide is in brackets. Equilibrium is reached in about 54 s.
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 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.