Nuclide reference
Rn-219 — Radon-219
Rn-219 की half-life 3.96 s है। मुख्य decay mode: α decay → Po-215 (100%)।
Identification
- तत्व
- Radon (Rn)
- Atomic number Z
- 86
- Mass number A
- 219
- State
- Radioactive
Key quantities
- Half-life
- 3.96 s
- विशिष्ट गतिविधि
- 4.813e+20 Bq/g
- Gamma constant Γ
- —
- D-value (НП-067-24)
- —
Decay modes
- α decay → Po-215 — 100 %
Main gamma lines
| Energy, keV | Yield, % |
|---|---|
| 271.23 | 10.8 |
| 401.81 | 6.588 |
| 79.291 · X-ray line | 0.894 |
| 76.864 · X-ray line | 0.5371 |
| 130.6 | 0.1296 |
| 293.56 | 0.07344 |
| 438.9 (Po-215) | 0.06003 |
| 517.6 | 0.04428 |
| 676.66 | 0.01728 |
| 608.3 | 0.00432 |
Includes daughter nuclides in equilibrium: Po-215 (yield per decay of Rn-219); the emitting nuclide is in brackets. Equilibrium is reached in about 0.012 s.
Alpha and beta particles
| Radiation | Energy, keV | Yield, % |
|---|---|---|
| α | 6,819.1 | 79.4 |
| 6,552.6 | 12.9 | |
| 6,425 | 7.5 | |
| 7,386.1 (Po-215) | 99.98 |
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.