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Radionuclide Dosimetric Data Sheets
Gold-196m
Summary data
General
Classification
Isotope: Au-196m
Atomic number (Z): 79
Mass number (A): 196
Neutron number (N): 117
Radioactive decay
Decay modes: Internal transition
Half-life: 9.6 [h]
Decay constant: 2.0056e-05 [1/s]
Daughters: Au-196 (100.0%)
Radioactive daughters: Au-196
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.37601 [MeV]
Mean photon energy: 0.24732 [MeV]
Air kerma rate constant, Γ10: 2.824e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 2.824e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 6.024e-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-:
6.024e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 3.963e-14
[Gy·kg/Bq·s]
Dose point kernels (plot)
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/Au-196m DPK.csv
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/Au-196m Summary 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/Au-196m Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.11015e-05 |
4.296e+01 |
X-ray |
|
2.14695e-03 |
1.298e-01 |
X-ray |
|
8.52062e-03 |
2.387e-02 |
X-ray |
|
9.62130e-03 |
4.154e-02 |
X-ray |
|
9.70979e-03 |
3.660e-01 |
X-ray |
|
1.11917e-02 |
1.046e-02 |
X-ray |
|
1.14753e-02 |
2.794e-01 |
X-ray |
|
1.15870e-02 |
6.837e-02 |
X-ray |
|
1.16020e-02 |
1.207e-02 |
X-ray |
|
1.34225e-02 |
5.516e-02 |
X-ray |
|
6.71839e-02 |
2.613e-01 |
X-ray |
|
6.90380e-02 |
4.446e-01 |
X-ray |
|
7.78158e-02 |
4.890e-02 |
X-ray |
|
7.82261e-02 |
9.462e-02 |
X-ray |
|
8.03237e-02 |
1.147e-02 |
X-ray |
|
8.04227e-02 |
2.240e-02 |
X-ray |
|
1.37690e-01 |
1.275e-02 |
Gamma |
|
1.47810e-01 |
4.250e-01 |
Gamma |
|
1.68370e-01 |
7.650e-02 |
Gamma |
|
1.88270e-01 |
3.740e-01 |
Gamma |
|
2.64000e-01 |
1.275e-02 |
Gamma |
|
2.85490e-01 |
4.335e-02 |
Gamma |
|
3.16190e-01 |
2.890e-02 |
Gamma |
|
4.01454e-05 |
9.450e+00 |
Auger electron |
|
6.41370e-05 |
1.448e+01 |
Auger electron |
|
1.74593e-04 |
7.676e+00 |
Auger electron |
|
4.15939e-04 |
1.496e+00 |
Auger electron |
|
8.32399e-04 |
4.179e-01 |
Auger electron |
|
1.75705e-03 |
3.815e+00 |
Auger electron |
|
1.97925e-03 |
3.959e-01 |
Auger electron |
|
2.31819e-03 |
1.952e-02 |
Auger electron |
|
6.14400e-03 |
6.945e-02 |
Conversion electron |
|
7.49600e-03 |
1.136e+00 |
Auger electron |
|
7.99800e-03 |
8.319e-02 |
Conversion electron |
|
9.62614e-03 |
4.778e-01 |
Auger electron |
|
1.17847e-02 |
4.871e-02 |
Auger electron |
|
1.63740e-02 |
6.381e-02 |
Conversion electron |
|
1.71860e-02 |
3.936e-02 |
Conversion electron |
|
1.99200e-02 |
1.148e-02 |
Conversion electron |
|
2.79760e-02 |
1.646e-02 |
Conversion electron |
|
5.42437e-02 |
2.378e-02 |
Auger electron |
|
5.67300e-02 |
3.206e-02 |
Conversion electron |
|
6.50992e-02 |
1.281e-02 |
Auger electron |
|
6.68500e-02 |
1.466e-01 |
Conversion electron |
|
7.03240e-02 |
1.081e-02 |
Conversion electron |
|
7.08840e-02 |
3.943e-01 |
Conversion electron |
|
7.27380e-02 |
3.082e-01 |
Conversion electron |
|
8.19260e-02 |
2.036e-01 |
Conversion electron |
|
8.46600e-02 |
6.107e-02 |
Conversion electron |
|
8.74100e-02 |
1.088e-01 |
Conversion electron |
|
9.39500e-02 |
2.546e-01 |
Conversion electron |
|
1.07310e-01 |
3.847e-01 |
Conversion electron |
|
1.33474e-01 |
1.845e-02 |
Conversion electron |
|
1.34034e-01 |
1.330e-01 |
Conversion electron |
|
1.35888e-01 |
9.587e-02 |
Conversion electron |
|
1.45076e-01 |
6.428e-02 |
Conversion electron |
|
1.47810e-01 |
1.904e-02 |
Conversion electron |
|
1.54034e-01 |
1.641e-02 |
Conversion electron |
|
1.60574e-01 |
1.835e-01 |
Conversion electron |
|
1.61134e-01 |
4.413e-02 |
Conversion electron |
|
1.62988e-01 |
2.857e-01 |
Conversion electron |
|
1.72176e-01 |
1.555e-01 |
Conversion electron |
|
1.73934e-01 |
5.779e-02 |
Conversion electron |
|
1.74910e-01 |
4.830e-02 |
Conversion electron |
|
1.85536e-01 |
1.508e-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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