Nuclide reference
Kr-81m — Krypton-81m
Kr-81m की half-life 13.1 s है। मुख्य decay mode: isomeric transition → Kr-81 (100%)।
Identification
- तत्व
- Krypton (Kr)
- Atomic number Z
- 36
- Mass number A
- 81
- State
- Radioactive
Key quantities
- Half-life
- 13.1 s
- विशिष्ट गतिविधि
- 3.934e+20 Bq/g
- Gamma constant Γ
- —
- D-value (НП-067-24)
- —
Decay modes
- isomeric transition → Kr-81 — 100 %
- electron capture → Br-81 — 0.0025 %
Main gamma lines
| Energy, keV | Yield, % |
|---|---|
| 190.46 | 67.64 |
| 12.648 · X-ray line | 9.842 |
| 12.596 · X-ray line | 5.091 |
Lines of the bare nuclide (ENDF/B-VIII.0), without daughter ingrowth.
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.