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Radionuclide Dosimetric Data Sheets

Platinum-189

Summary data

General

Classification

Isotope:  Pt-189
Atomic number (Z):  78
Mass number (A):  189
Neutron number (N):  111

Radioactive decay

Decay modes:  β+, Electron capture
Half-life:  10.87 [h]
Decay constant:  1.7713e-05 [1/s]
Daughters:  Ir-189 (100.0%)
Radioactive daughters:  Ir-189

Dosimetric constants

Mean alpha energy:  0.0 [MeV]
Mean electron energy:  0.09962 [MeV]
Mean photon energy:  0.48704 [MeV]
Air kerma rate constant, Γ10:  3.104e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair:  3.117e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or electrons), Δwp:  1.596e-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-:  1.596e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp:  7.803e-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-189 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-189 Summary Spectrum.csv

Beta spectra (plot)

Spectra source:  ICRP Publication 107: Nuclear Decay Data for Dosimetric Calculations. Ann. ICRP 2008, 38 (3).

Download tabulated beta spectra file here:  www.mirdsoft.org/products/MIRDspecs/Pt-189 Beta 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-189 Summary Spectrum.csv

 

Energy [MeV]

Yield [#/nt] if > 0.01

Radiation type

4.54669e-05

1.654e+01

X-ray

1.99452e-03

7.796e-02

X-ray

8.06830e-03

1.562e-02

X-ray

9.09081e-03

2.698e-02

X-ray

9.16923e-03

2.379e-01

X-ray

1.07358e-02

1.657e-01

X-ray

1.09194e-02

4.354e-02

X-ray

1.25485e-02

3.195e-02

X-ray

6.34550e-02

3.830e-01

X-ray

6.50999e-02

6.570e-01

X-ray

7.34138e-02

7.165e-02

X-ray

7.37749e-02

1.385e-01

X-ray

7.57436e-02

1.660e-02

X-ray

7.58295e-02

3.233e-02

X-ray

8.22200e-02

2.883e-02

Gamma

9.43400e-02

7.626e-02

Gamma

1.13820e-01

2.892e-02

Gamma

1.41180e-01

4.204e-02

Gamma

1.86700e-01

2.232e-02

Gamma

2.23340e-01

1.488e-02

Gamma

2.43500e-01

6.975e-02

Gamma

3.00510e-01

3.720e-02

Gamma

3.17650e-01

3.255e-02

Gamma

4.03900e-01

1.414e-02

Gamma

5.44910e-01

5.766e-02

Gamma

5.68850e-01

7.068e-02

Gamma

6.07600e-01

2.604e-02

Gamma

6.07600e-01

5.487e-02

Gamma

6.27080e-01

2.353e-02

Gamma

7.21380e-01

9.300e-02

Gamma

7.92670e-01

1.349e-02

Gamma

3.53934e-05

3.147e+00

Auger electron

1.71097e-04

5.455e+00

Auger electron

3.50629e-04

1.097e+00

Auger electron

3.59723e-04

2.411e-01

Auger electron

6.94503e-04

3.123e-01

Auger electron

1.64370e-03

2.640e+00

Auger electron

1.84462e-03

2.331e-01

Auger electron

2.15154e-03

1.158e-02

Auger electron

5.90600e-03

2.620e-01

Conversion electron

7.08758e-03

8.096e-01

Auger electron

9.06160e-03

3.283e-01

Auger electron

1.10645e-02

3.261e-02

Auger electron

1.80260e-02

8.500e-02

Conversion electron

3.75060e-02

8.018e-02

Conversion electron

5.13520e-02

3.675e-02

Auger electron

5.82940e-02

3.826e-02

Conversion electron

6.04760e-02

1.407e-02

Conversion electron

6.15157e-02

1.958e-02

Auger electron

6.48660e-02

8.239e-02

Conversion electron

6.88240e-02

3.904e-02

Conversion electron

6.91510e-02

1.537e-02

Conversion electron

7.96810e-02

1.152e-02

Conversion electron

8.09440e-02

1.212e-02

Conversion electron

8.14810e-02

1.450e-01

Conversion electron

8.31260e-02

1.274e-01

Conversion electron

9.18010e-02

7.331e-02

Conversion electron

9.43400e-02

2.113e-02

Conversion electron

1.00424e-01

1.177e-02

Conversion electron

1.10386e-01

1.665e-02

Conversion electron

1.27784e-01

1.219e-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

 

 

 

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