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Radionuclide Dosimetric Data Sheets

Bismuth-203

Summary data

General

Classification

Isotope:  Bi-203
Atomic number (Z):  83
Mass number (A):  203
Neutron number (N):  120

Radioactive decay

Decay modes:  β+, Electron capture
Half-life:  11.76 [h]
Decay constant:  1.6373e-05 [1/s]
Daughters:  Pb-203 (100.0%)
Radioactive daughters:  Pb-203

Dosimetric constants

Mean alpha energy:  0.0 [MeV]
Mean electron energy:  0.08089 [MeV]
Mean photon energy:  2.38499 [MeV]
Air kerma rate constant, Γ10:  9.594e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair:  9.604e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or electrons), Δwp:  1.296e-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-:  1.296e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp:  3.821e-13 [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/Bi-203 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/Bi-203 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/Bi-203 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/Bi-203 Summary Spectrum.csv

 

Energy [MeV]

Yield [#/nt] if > 0.01

Radiation type

2.66202e-05

1.538e+01

X-ray

2.37981e-03

5.782e-02

X-ray

9.21569e-03

1.032e-02

X-ray

1.04453e-02

1.806e-02

X-ray

1.05510e-02

1.590e-01

X-ray

1.26275e-02

3.059e-02

X-ray

1.26563e-02

9.904e-02

X-ray

1.48158e-02

2.022e-02

X-ray

7.30390e-02

2.538e-01

X-ray

7.52501e-02

4.262e-01

X-ray

8.47407e-02

4.747e-02

X-ray

8.52354e-02

9.196e-02

X-ray

8.75343e-02

1.132e-02

X-ray

8.76558e-02

2.225e-02

X-ray

1.26460e-01

1.205e-02

Gamma

1.86640e-01

3.108e-02

Gamma

2.64190e-01

5.239e-02

Gamma

3.81670e-01

1.285e-02

Gamma

5.69290e-01

1.217e-02

Gamma

6.33760e-01

1.370e-02

Gamma

6.33800e-01

1.329e-02

Gamma

7.22390e-01

4.766e-02

Gamma

7.46450e-01

1.146e-02

Gamma

7.46450e-01

1.125e-02

Gamma

8.16320e-01

4.026e-02

Gamma

8.20230e-01

2.960e-01

Gamma

8.25210e-01

1.459e-01

Gamma

8.47180e-01

8.495e-02

Gamma

8.66470e-01

1.486e-02

Gamma

8.96850e-01

1.305e-01

Gamma

9.33390e-01

1.436e-02

Gamma

1.03373e+00

8.821e-02

Gamma

1.19855e+00

2.016e-02

Gamma

1.20305e+00

1.536e-02

Gamma

1.25383e+00

1.231e-02

Gamma

1.50670e+00

3.670e-02

Gamma

1.53646e+00

7.548e-02

Gamma

1.55255e+00

1.480e-02

Gamma

1.59266e+00

1.092e-02

Gamma

1.67959e+00

8.762e-02

Gamma

1.71965e+00

3.404e-02

Gamma

1.74848e+00

1.891e-02

Gamma

1.84729e+00

1.143e-01

Gamma

1.88802e+00

1.936e-02

Gamma

1.89300e+00

8.170e-02

Gamma

1.92816e+00

1.122e-02

Gamma

2.01139e+00

1.764e-02

Gamma

4.21735e-05

3.458e+00

Auger electron

8.23826e-05

4.977e+00

Auger electron

1.73866e-04

2.625e+00

Auger electron

4.23551e-04

5.900e-01

Auger electron

9.29114e-04

2.076e-01

Auger electron

1.91048e-03

1.396e+00

Auger electron

2.17103e-03

1.740e-01

Auger electron

8.04814e-03

4.040e-01

Auger electron

1.04246e-02

1.787e-01

Auger electron

1.28294e-02

1.894e-02

Auger electron

4.41430e-02

1.828e-02

Conversion electron

5.87487e-02

2.149e-02

Auger electron

7.07077e-02

1.175e-02

Auger electron

9.83500e-02

4.268e-02

Conversion electron

1.75900e-01

2.282e-02

Conversion electron

7.36920e-01

3.264e-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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