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Radionuclide Dosimetric Data Sheets
Gold-193m
Summary data
General
Classification
Isotope: Au-193m
Atomic number (Z): 79
Mass number (A): 193
Neutron number (N): 114
Radioactive decay
Decay modes: Electron capture, Internal transition
Half-life: 3.9 [s]
Decay constant: 1.7773e-01 [1/s]
Daughters: Au-193 (100.0%), Pt-193m (0.03%)
Radioactive daughters: Au-193, Pt-193m
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.09039 [MeV]
Mean photon energy: 0.1979 [MeV]
Air kerma rate constant, Γ10: 1.516e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 1.516e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 1.448e-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-:
1.448e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 3.171e-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-193m 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-193m 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-193m Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.11045e-05 |
1.615e+01 |
X-ray |
|
2.14870e-03 |
4.864e-02 |
X-ray |
|
9.62131e-03 |
1.478e-02 |
X-ray |
|
9.70979e-03 |
1.302e-01 |
X-ray |
|
1.14753e-02 |
1.235e-01 |
X-ray |
|
1.15870e-02 |
2.432e-02 |
X-ray |
|
1.34225e-02 |
2.438e-02 |
X-ray |
|
6.71839e-02 |
6.441e-02 |
X-ray |
|
6.90380e-02 |
1.096e-01 |
X-ray |
|
7.78158e-02 |
1.206e-02 |
X-ray |
|
7.82261e-02 |
2.333e-02 |
X-ray |
|
2.19750e-01 |
3.769e-02 |
Gamma |
|
2.57970e-01 |
6.588e-01 |
Gamma |
|
4.01436e-05 |
3.551e+00 |
Auger electron |
|
6.41258e-05 |
5.444e+00 |
Auger electron |
|
1.74826e-04 |
2.896e+00 |
Auger electron |
|
4.19004e-04 |
5.616e-01 |
Auger electron |
|
1.06129e-03 |
9.628e-02 |
Auger electron |
|
1.76021e-03 |
1.430e+00 |
Auger electron |
|
1.98407e-03 |
1.488e-01 |
Auger electron |
|
7.54143e-03 |
4.248e-01 |
Auger electron |
|
9.67263e-03 |
1.788e-01 |
Auger electron |
|
1.18318e-02 |
1.824e-02 |
Auger electron |
|
1.84340e-02 |
3.299e-01 |
Conversion electron |
|
2.02880e-02 |
3.554e-01 |
Conversion electron |
|
2.44440e-02 |
1.408e-02 |
Conversion electron |
|
2.62980e-02 |
1.449e-02 |
Conversion electron |
|
2.94760e-02 |
2.326e-01 |
Conversion electron |
|
3.22100e-02 |
7.064e-02 |
Conversion electron |
|
1.77010e-01 |
2.226e-01 |
Conversion electron |
|
2.43634e-01 |
3.314e-02 |
Conversion electron |
|
2.55236e-01 |
1.051e-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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