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Nuclide reference

Ru-105 — Ruthenium-105

Ru-105 की half-life 4.44 h है। मुख्य decay mode: β⁻ decay → Rh-105 (71.66%)।

Identification

तत्व
Ruthenium (Ru)
Atomic number Z
44
Mass number A
105
State
Radioactive

Key quantities

Half-life
4.44 h
विशिष्ट गतिविधि
2.487e+17 Bq/g
Gamma constant Γ
—
परिवहन के लिए A1 / A2 (SSR-6)
1 TBq / 0.6 TBq
D-value (НП-067-24)
0.08 TBq

Decay modes

  • β⁻ decay → Rh-105 — 71.66 %
  • β⁻ decay → Rh-105m — 28.34 %

Main gamma lines

Energy, keVYield, %
724.347.3
469.3717.55
676.3615.66
316.4411.12
262.836.575
20.216 (Rh-105m) · X-ray line6.511
129.57 (Rh-105m)5.717
393.363.775
20.0395 (Rh-105m) · X-ray line3.36
875.852.502

Includes daughter nuclides in equilibrium: Rh-105m (yield per decay of Ru-105); the emitting nuclide is in brackets. Equilibrium is reached in about 4.7 min.

Alpha and beta particles

RadiationEnergy, keVYield, %
β⁻, E max1,194.747.8
1,113.118.8
1,133.116.9
949.553.98

For β⁻ the endpoint (maximum) energy of the spectrum is given. ENDF/B-VIII.0.

Related calculators

Decayगतिविधि ↔ द्रव्यमानSource categoryDose rateA1/A2 और package type
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.

Ruthenium-105 (Ru-105) — reference data

What is in the card

This card gathers the key data of radionuclide Ru-105 in one place: half-life, decay modes, main gamma lines, alpha and beta particle energies, gamma constant, specific activity and the D-value for source categorization. Decay and emission data are from ENDF/B-VIII.0; the D-value follows NP-067-24; the gamma constant is the ambient dose equivalent H*(10) at 1 m, computed from ICRP-107 spectra.

How to use the data

Half-life and specific activity let you recalculate the activity of a Ru-105 source to the delivery or disposal date — use the decay calculator. Gamma lines with yields identify the nuclide from a spectrum and pick the line for gamma spectrometry; the gamma constant Γ gives the dose rate at a distance, while the D-value and A1/A2 set the source category and the package type for transport.