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Radionuclide Dosimetric Data Sheets

Osmium-182

Isotope:  Os-182
Atomic number (Z):  76
Mass number (A):  182
Neutron number (N):  106

Decay modes:  Electron capture
Half-life:  22.1 [h]
Decay constant:  8.7123e-06 [1/s]
Daughters:  Re-182m (100.0%)
Radioactive daughters:  Re-182m

Mean alpha energy:  0.0 [MeV]
Mean electron energy:  0.05649 [MeV]
Mean photon energy:  0.43169 [MeV]
Air kerma rate constant, Γ₁₀:  2.543e-17 [Gy·m²/Bq·s]
Air kerma coefficient, K_air:  2.543e-17 [Gy·m²/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or electrons), Δ_wp:  9.051e-15 [Gy·kg/Bq·s]
Equilibrium dose constant for alphas, Δ_α:  0.000e+00 [Gy·kg/Bq·s]
Equilibrium dose constant for betas/electrons, Δ_β-,β+,e-:  9.051e-15 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δ_p:  6.916e-14 [Gy·kg/Bq·s]

Dose point kernel source:  Graves, et al. Medical Physics. 2019 Nov.; 46(11):5284-5293.

Note: Bins are spaced every 0.1 mm until a radius of 10 cm, and every 1 mm until a radius of 2 m.

Download tabulated dose point kernel file here:  www.mirdsoft.org/products/MIRDspecs/Os-182 DPK.csv

Spectra source:  ICRP Publication 107: Nuclear Decay Data for Dosimetric Calculations. Ann. ICRP 2008, 38 (3).

Download tabulated summary spectra file here:  www.mirdsoft.org/products/MIRDspecs/Os-182 Summary Spectrum.csv

 

Spectra source:  ICRP Publication 107: Nuclear Decay Data for Dosimetric Calculations. Ann. ICRP 2008, 38 (3).

Note: Radiations with yield < 0.01 are excluded from the table, but are available in the linked *.csv data.

Download tabulated summary spectra file here:  www.mirdsoft.org/products/MIRDspecs/Os-182 Summary Spectrum.csv

 

Energy [MeV]	Yield [#/nt] if > 0.01	Radiation type
3.74848e-05	1.484e+01	X-ray
1.84814e-03	5.901e-02	X-ray
7.62640e-03	1.170e-02	X-ray
8.57621e-03	2.001e-02	X-ray
8.64530e-03	1.765e-01	X-ray
9.83057e-03	1.384e-02	X-ray
1.00312e-02	8.805e-02	X-ray
1.01475e-02	1.707e-02	X-ray
1.02735e-02	3.164e-02	X-ray
1.17147e-02	1.658e-02	X-ray
5.55050e-02	5.764e-02	Gamma
5.98631e-02	2.303e-01	X-ray
6.13181e-02	3.982e-01	X-ray
6.91788e-02	4.303e-02	X-ray
6.94956e-02	8.316e-02	X-ray
7.14134e-02	1.913e-02	X-ray
1.30827e-01	3.301e-02	Gamma
1.80231e-01	3.354e-01	Gamma
2.63285e-01	6.707e-02	Gamma
2.74320e-01	1.813e-02	Gamma
5.10056e-01	5.240e-01	Gamma
2.73164e-05	2.949e+00	Auger electron
1.62278e-04	4.962e+00	Auger electron
3.30008e-04	1.008e+00	Auger electron
3.34085e-04	1.892e-01	Auger electron
4.84194e-04	5.186e-01	Auger electron
1.52496e-03	2.327e+00	Auger electron
1.71514e-03	1.647e-01	Auger electron
3.11150e-03	1.752e-02	Conversion electron
6.70168e-03	6.622e-01	Auger electron
8.53270e-03	2.584e-01	Auger electron
1.03974e-02	2.506e-02	Auger electron
1.50410e-02	1.815e-01	Conversion electron
1.55560e-02	1.737e-02	Conversion electron
2.51885e-02	4.624e-02	Conversion electron
2.75490e-02	1.355e-02	Conversion electron
4.29970e-02	2.085e-01	Conversion electron
4.35120e-02	2.190e-02	Conversion electron
4.40880e-02	1.946e-02	Conversion electron
4.85493e-02	2.343e-02	Auger electron
5.31445e-02	5.408e-02	Conversion electron
5.55050e-02	1.597e-02	Conversion electron
5.80540e-02	1.234e-02	Auger electron
1.08375e-01	2.340e-02	Conversion electron
4.38200e-01	2.654e-02	Conversion electron

 

Isotope decay characteristics are periodically updated as better measurements can be made - changes that may not be reflected on this page. Please see useful links:

National Nuclear Data Center (NNDC):  https://www.nndc.bnl.gov/nudat3/mird/

International Atomic Energy Agency (IAEA) Livechart:  https://www-nds.iaea.org/relnsd/vcharthtml/VChartHTML.html

ICRP Report 107: https://www.icrp.org/publication.asp?id=ICRP%20Publication%20107

Graves et al. Dose Point Kernels: https://doi.org/10.1002/mp.13789

MIRD Decay Schemes 2nd Edition: https://sites.snmmi.org/SNMMI-MAIN/iCore/Store/StoreLayouts/Item_Detail.aspx?iProductCode=0-932004-80-6

 

 

 

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