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Radionuclide Dosimetric Data Sheets
Platinum-193m
Summary data
General
Classification
Isotope: Pt-193m
Atomic number (Z): 78
Mass number (A): 193
Neutron number (N): 115
Radioactive decay
Decay modes: Internal transition
Half-life: 4.33 [d]
Decay constant: 1.8528e-06 [1/s]
Daughters: Pt-193 (100.0%)
Radioactive daughters: Pt-193
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.13773 [MeV]
Mean photon energy: 0.01322 [MeV]
Air kerma rate constant, Γ10: 4.491e-18 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 4.491e-18 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 2.207e-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-:
2.207e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 2.118e-15
[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/Pt-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/Pt-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/Pt-193m Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.01408e-05 |
3.052e+01 |
X-ray |
|
2.08600e-03 |
5.984e-02 |
X-ray |
|
9.35461e-03 |
1.709e-02 |
X-ray |
|
9.43800e-03 |
1.506e-01 |
X-ray |
|
1.11006e-02 |
2.729e-02 |
X-ray |
|
1.12510e-02 |
2.786e-02 |
X-ray |
|
6.53020e-02 |
4.228e-02 |
X-ray |
|
6.70480e-02 |
7.224e-02 |
X-ray |
|
7.59780e-02 |
1.530e-02 |
X-ray |
|
3.75148e-05 |
7.440e+00 |
Auger electron |
|
6.50145e-05 |
9.780e+00 |
Auger electron |
|
1.74516e-04 |
6.028e+00 |
Auger electron |
|
4.20130e-04 |
1.340e+00 |
Auger electron |
|
6.01970e-04 |
1.530e-01 |
Auger electron |
|
1.06700e-03 |
9.663e-02 |
Conversion electron |
|
1.64200e-03 |
9.999e-01 |
Conversion electron |
|
1.71873e-03 |
1.890e+00 |
Auger electron |
|
1.95500e-03 |
1.871e-01 |
Auger electron |
|
7.02099e-03 |
3.855e-01 |
Auger electron |
|
9.05412e-03 |
1.582e-01 |
Auger electron |
|
9.99710e-03 |
6.864e-01 |
Conversion electron |
|
1.11095e-02 |
1.582e-02 |
Auger electron |
|
1.26340e-02 |
2.104e-01 |
Conversion electron |
|
5.68850e-02 |
1.513e-01 |
Conversion electron |
|
1.21638e-01 |
1.775e-01 |
Conversion electron |
|
1.22187e-01 |
3.986e-02 |
Conversion electron |
|
1.23933e-01 |
3.827e-01 |
Conversion electron |
|
1.32863e-01 |
1.893e-01 |
Conversion electron |
|
1.35500e-01 |
5.822e-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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