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Radionuclide Dosimetric Data Sheets
Gold-195
Summary data
General
Classification
Isotope: Au-195
Atomic number (Z): 79
Mass number (A): 195
Neutron number (N): 116
Radioactive decay
Decay modes: Electron capture
Half-life: 186.1 [d]
Decay constant: 4.3109e-08 [1/s]
Daughters: Pt-195 (100.0%)
Radioactive daughters: None
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.05202 [MeV]
Mean photon energy: 0.08385 [MeV]
Air kerma rate constant, Γ10: 1.474e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 1.474e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 8.335e-15 [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-:
8.335e-15 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 1.343e-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-195 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-195 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-195 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.01420e-05 |
3.063e+01 |
X-ray |
|
2.06927e-03 |
8.582e-02 |
X-ray |
|
8.29381e-03 |
1.558e-02 |
X-ray |
|
9.35458e-03 |
2.702e-02 |
X-ray |
|
9.43804e-03 |
2.381e-01 |
X-ray |
|
1.08400e-02 |
1.998e-02 |
X-ray |
|
1.11006e-02 |
1.170e-01 |
X-ray |
|
1.12251e-02 |
2.346e-02 |
X-ray |
|
1.12510e-02 |
4.404e-02 |
X-ray |
|
1.29799e-02 |
2.283e-02 |
X-ray |
|
6.53020e-02 |
2.794e-01 |
X-ray |
|
6.70480e-02 |
4.774e-01 |
X-ray |
|
7.55931e-02 |
5.230e-02 |
X-ray |
|
7.59780e-02 |
1.011e-01 |
X-ray |
|
7.80108e-02 |
1.219e-02 |
X-ray |
|
7.81028e-02 |
2.377e-02 |
X-ray |
|
9.88800e-02 |
1.090e-01 |
Gamma |
|
3.74757e-05 |
6.556e+00 |
Auger electron |
|
5.63004e-05 |
1.051e+01 |
Auger electron |
|
1.71309e-04 |
5.529e+00 |
Auger electron |
|
4.09185e-04 |
1.058e+00 |
Auger electron |
|
6.03628e-04 |
6.401e-01 |
Auger electron |
|
1.69546e-03 |
2.701e+00 |
Auger electron |
|
1.90628e-03 |
2.567e-01 |
Auger electron |
|
2.22909e-03 |
1.266e-02 |
Auger electron |
|
7.27551e-03 |
7.501e-01 |
Auger electron |
|
9.33115e-03 |
3.096e-01 |
Auger electron |
|
1.14206e-02 |
3.121e-02 |
Auger electron |
|
1.70140e-02 |
2.040e-01 |
Conversion electron |
|
1.75630e-02 |
2.130e-02 |
Conversion electron |
|
2.02650e-02 |
6.394e-01 |
Conversion electron |
|
2.82391e-02 |
5.322e-02 |
Conversion electron |
|
3.08760e-02 |
1.639e-02 |
Conversion electron |
|
5.27836e-02 |
2.610e-02 |
Auger electron |
|
6.32891e-02 |
1.398e-02 |
Auger electron |
|
8.50180e-02 |
9.619e-02 |
Conversion electron |
|
8.55670e-02 |
1.229e-02 |
Conversion electron |
|
9.62431e-02 |
2.617e-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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