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Radionuclide Dosimetric Data Sheets
Platinum-188
Summary data
General
Classification
Isotope: Pt-188
Atomic number (Z): 78
Mass number (A): 188
Neutron number (N): 110
Radioactive decay
Decay modes: α, Electron capture
Half-life: 10.2 [d]
Decay constant: 7.8652e-07 [1/s]
Daughters: Ir-188 (100.0%), Os-184 (2.9e-05%)
Radioactive daughters: Ir-188
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.08234 [MeV]
Mean photon energy: 0.20548 [MeV]
Air kerma rate constant, Γ10: 1.763e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 1.763e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 1.319e-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-:
1.319e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 3.292e-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/Pt-188 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-188 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-188 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
4.53136e-05 |
1.385e+01 |
X-ray |
|
1.99501e-03 |
6.460e-02 |
X-ray |
|
8.06830e-03 |
1.256e-02 |
X-ray |
|
9.09081e-03 |
2.169e-02 |
X-ray |
|
9.16923e-03 |
1.912e-01 |
X-ray |
|
1.07358e-02 |
1.153e-01 |
X-ray |
|
1.08570e-02 |
1.145e-02 |
X-ray |
|
1.09194e-02 |
3.499e-02 |
X-ray |
|
1.25485e-02 |
2.225e-02 |
X-ray |
|
6.34550e-02 |
2.877e-01 |
X-ray |
|
6.50999e-02 |
4.934e-01 |
X-ray |
|
7.34138e-02 |
5.381e-02 |
X-ray |
|
7.37749e-02 |
1.041e-01 |
X-ray |
|
7.57436e-02 |
1.247e-02 |
X-ray |
|
7.58295e-02 |
2.428e-02 |
X-ray |
|
1.40350e-01 |
2.328e-02 |
Gamma |
|
1.87590e-01 |
1.940e-01 |
Gamma |
|
1.95050e-01 |
1.862e-01 |
Gamma |
|
3.81430e-01 |
7.469e-02 |
Gamma |
|
4.23340e-01 |
4.365e-02 |
Gamma |
|
4.78300e-01 |
1.785e-02 |
Gamma |
|
3.54088e-05 |
2.660e+00 |
Auger electron |
|
1.71068e-04 |
4.557e+00 |
Auger electron |
|
3.54213e-04 |
9.531e-01 |
Auger electron |
|
3.63760e-04 |
2.049e-01 |
Auger electron |
|
6.17932e-04 |
3.531e-01 |
Auger electron |
|
1.64365e-03 |
2.186e+00 |
Auger electron |
|
1.84522e-03 |
1.931e-01 |
Auger electron |
|
7.07961e-03 |
6.411e-01 |
Auger electron |
|
9.05504e-03 |
2.600e-01 |
Auger electron |
|
1.10610e-02 |
2.584e-02 |
Auger electron |
|
2.20560e-02 |
1.871e-02 |
Conversion electron |
|
2.85840e-02 |
5.215e-02 |
Conversion electron |
|
3.94410e-02 |
1.395e-02 |
Conversion electron |
|
4.14540e-02 |
2.453e-02 |
Conversion electron |
|
4.19910e-02 |
6.368e-02 |
Conversion electron |
|
4.36360e-02 |
6.303e-02 |
Conversion electron |
|
5.13520e-02 |
2.761e-02 |
Auger electron |
|
5.23110e-02 |
3.817e-02 |
Conversion electron |
|
5.48500e-02 |
1.107e-02 |
Conversion electron |
|
6.15157e-02 |
1.471e-02 |
Auger electron |
|
6.40360e-02 |
4.692e-02 |
Conversion electron |
|
1.11276e-01 |
1.712e-01 |
Conversion electron |
|
1.18736e-01 |
1.480e-01 |
Conversion electron |
|
1.74194e-01 |
2.525e-02 |
Conversion electron |
|
1.81654e-01 |
2.185e-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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