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Radionuclide Dosimetric Data Sheets
Osmium-196
Summary data
General
Classification
Isotope: Os-196
Atomic number (Z): 76
Mass number (A): 196
Neutron number (N): 120
Radioactive decay
Decay modes: β-
Half-life: 34.9 [m]
Decay constant: 3.3102e-04 [1/s]
Daughters: Ir-196 (100.0%)
Radioactive daughters: Ir-196
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.3807 [MeV]
Mean photon energy: 0.08049 [MeV]
Air kerma rate constant, Γ10: 4.116e-18 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 4.116e-18 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 6.099e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for alphas, Δα: 0.000e+00
[Gy·kg/Bq·s]
Equilibrium dose constant for betas/electrons, Δβ-,β+,e-:
6.099e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 1.290e-14
[Gy·kg/Bq·s]
Summary spectra (plot)
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-196 Summary Spectrum.csv
Beta spectra (plot)
Spectra source: ICRP Publication 107: Nuclear Decay Data for Dosimetric Calculations. Ann. ICRP 2008, 38 (3).
Download tabulated beta spectra file here: www.mirdsoft.org/products/MIRDspecs/Os-196 Beta Spectrum.csv
Tabulated data
Summary spectra (table)
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-196 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
4.54888e-05 |
1.512e+00 |
X-ray |
|
9.16923e-03 |
2.267e-02 |
X-ray |
|
1.07358e-02 |
1.414e-02 |
X-ray |
|
6.34550e-02 |
4.511e-02 |
X-ray |
|
6.50999e-02 |
7.738e-02 |
X-ray |
|
7.37750e-02 |
1.632e-02 |
X-ray |
|
1.26200e-01 |
5.300e-02 |
Gamma |
|
2.07100e-01 |
2.400e-02 |
Gamma |
|
2.57800e-01 |
2.300e-02 |
Gamma |
|
3.15400e-01 |
2.500e-02 |
Gamma |
|
4.07900e-01 |
5.900e-02 |
Gamma |
|
6.29100e-01 |
1.600e-02 |
Gamma |
|
1.96739e-01 |
3.297e-02 |
Beta |
|
2.38010e-01 |
6.593e-02 |
Beta |
|
3.13300e-01 |
1.199e-02 |
Beta |
|
3.44485e-01 |
2.298e-01 |
Beta |
|
3.94020e-01 |
6.593e-01 |
Beta |
|
3.53998e-05 |
2.873e-01 |
Auger electron |
|
1.70986e-04 |
4.982e-01 |
Auger electron |
|
3.48365e-04 |
9.921e-02 |
Auger electron |
|
3.58738e-04 |
2.192e-02 |
Auger electron |
|
6.79991e-04 |
2.874e-02 |
Auger electron |
|
1.64235e-03 |
2.424e-01 |
Auger electron |
|
1.84233e-03 |
2.138e-02 |
Auger electron |
|
7.05894e-03 |
7.490e-02 |
Auger electron |
|
9.03120e-03 |
3.035e-02 |
Auger electron |
|
4.98860e-02 |
1.443e-01 |
Conversion electron |
|
1.12804e-01 |
2.143e-02 |
Conversion electron |
|
1.30786e-01 |
1.615e-02 |
Conversion electron |
Useful Links
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
Reference Links
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
MIRDsoft MIRDspecs version 20250101 (www.mirdsoft.org)
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