Nuclide reference

Os-193 — Osmium-193

Os-193 की half-life 1.2546 d है। मुख्य decay mode: β⁻ decay → Ir-193 (99.67%)।

Identification

तत्व
Osmium (Os)
Atomic number Z
76
Mass number A
193
State
Radioactive

Key quantities

Half-life
1.2546 d
विशिष्ट गतिविधि
1.995e+16 Bq/g
Gamma constant Γ
—
परिवहन के लिए A1 / A2 (SSR-6)
2 TBq / 0.6 TBq
D-value (НП-067-24)
1 TBq

Decay modes

  • β⁻ decay → Ir-193 — 99.67 %
  • β⁻ decay → Ir-193m — 0.3335 %

Main gamma lines

Energy, keVYield, %
64.896 · X-ray line5.533
9.16129 · X-ray line4.093
460.53.88
138.923.795
73.0293.182
557.371.358
321.591.251
387.481.233
280.4461.23
107.0090.5626

Lines of the bare nuclide (ENDF/B-VIII.0), without daughter ingrowth.

Alpha and beta particles

RadiationEnergy, keVYield, %
β⁻, E max1,141.257
1,068.218
1,002.310.9
680.667.74

For 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.

Osmium-193 (Os-193) — reference data

What is in the card

This card gathers the key data of radionuclide Os-193 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 Os-193 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.