<= Return to MIRDspec isotope database


Radionuclide Dosimetric Data Sheets

Platinum-200

Summary data

General

Classification

Isotope:  Pt-200
Atomic number (Z):  78
Mass number (A):  200
Neutron number (N):  122

Radioactive decay

Decay modes:  β-
Half-life:  12.5 [h]
Decay constant:  1.5403e-05 [1/s]
Daughters:  Au-200 (100.0%)
Radioactive daughters:  Au-200

Dosimetric constants

Mean alpha energy:  0.0 [MeV]
Mean electron energy:  0.23208 [MeV]
Mean photon energy:  0.06052 [MeV]
Air kerma rate constant, Γ10:  7.365e-18 [Gy·m2/Bq·s]
Air kerma coefficient, Kair:  7.365e-18 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or electrons), Δwp:  3.718e-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-:  3.718e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp:  9.696e-15 [Gy·kg/Bq·s]

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-200 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-200 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-200 Summary Spectrum.csv

 

Energy [MeV]

Yield [#/nt] if > 0.01

Radiation type

1.11010e-05

1.478e+01

X-ray

2.14504e-03

4.456e-02

X-ray

9.62126e-03

1.284e-02

X-ray

9.70980e-03

1.131e-01

X-ray

1.11917e-02

1.429e-02

X-ray

1.14753e-02

4.477e-02

X-ray

1.15870e-02

2.113e-02

X-ray

1.16020e-02

1.649e-02

X-ray

6.00000e-02

2.305e-02

Gamma

6.71839e-02

6.447e-02

X-ray

6.90380e-02

1.097e-01

X-ray

7.62000e-02

1.340e-01

Gamma

7.78158e-02

1.207e-02

X-ray

7.82261e-02

2.335e-02

X-ray

1.03600e-01

1.028e-02

Gamma

1.35940e-01

3.243e-02

Gamma

2.27450e-01

2.064e-02

Gamma

2.43710e-01

2.492e-02

Gamma

3.30280e-01

1.099e-02

Gamma

7.79387e-02

5.855e-02

Beta

1.04890e-01

9.368e-02

Beta

1.25601e-01

1.249e-01

Beta

1.71323e-01

7.904e-02

Beta

1.80827e-01

4.489e-01

Beta

2.07672e-01

1.854e-01

Beta

4.01587e-05

3.267e+00

Auger electron

6.45951e-05

4.976e+00

Auger electron

1.74527e-04

2.615e+00

Auger electron

4.18547e-04

5.347e-01

Auger electron

6.22715e-04

4.213e-01

Auger electron

1.75138e-03

1.305e+00

Auger electron

1.97050e-03

1.343e-01

Auger electron

7.49943e-03

3.413e-01

Auger electron

9.63976e-03

1.437e-01

Auger electron

1.18186e-02

1.470e-02

Auger electron

1.31440e-02

1.638e-02

Conversion electron

2.26400e-02

5.821e-02

Conversion electron

2.93340e-02

8.612e-02

Conversion electron

4.09360e-02

2.218e-02

Conversion electron

4.56640e-02

9.712e-02

Conversion electron

5.49800e-02

8.457e-02

Conversion electron

5.72660e-02

2.503e-02

Conversion electron

6.18640e-02

2.805e-01

Conversion electron

6.24240e-02

2.697e-02

Conversion electron

6.55800e-02

1.024e-02

Conversion electron

7.34660e-02

7.227e-02

Conversion electron

7.62000e-02

2.244e-02

Conversion electron

1.21604e-01

1.280e-02

Conversion electron

1.46490e-01

1.266e-02

Conversion electron

1.62750e-01

1.263e-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)

<= Return to MIRDspec isotope database