Nuclide reference
Rb-84 — Rubidium-84
Rb-84 की half-life 32.82 d है। मुख्य decay mode: β⁺ decay / electron capture → Kr-84 (96.1%)।
Identification
- तत्व
- Rubidium (Rb)
- Atomic number Z
- 37
- Mass number A
- 84
- State
- Radioactive
Key quantities
- Half-life
- 32.82 d
- विशिष्ट गतिविधि
- 1.752e+15 Bq/g
- Gamma constant Γ
- —
- परिवहन के लिए A1 / A2 (SSR-6)
- 1 TBq / 1 TBq
- D-value (НП-067-24)
- 0.07 TBq
Decay modes
- β⁺ decay / electron capture → Kr-84 — 96.1 %
- β⁻ decay → Sr-84 — 3.9 %
Main gamma lines
| Energy, keV | Yield, % |
|---|---|
| 881.604 | 68.9 |
| 510.999 · annihilation 511 keV | 51.42 |
| 12.648 · X-ray line | 22.14 |
| 12.596 · X-ray line | 11.48 |
| 1,897.75 | 0.7373 |
| 1,016.16 | 0.3487 |
Lines of the bare nuclide (ENDF/B-VIII.0), without daughter ingrowth.
Alpha and beta particles
| Radiation | Energy, keV | Yield, % |
|---|---|---|
| β⁻, E max | 896 | 3.9 |
| β⁺, E max | 1,664.3 | 13.11 |
| 782.69 | 12.61 |
For β⁻ and β⁺ the endpoint (maximum) energy of the spectrum is given. ENDF/B-VIII.0.
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.