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Radionuclide Dosimetric Data Sheets

Bismuth-206

Summary data

General

Classification

Isotope:  Bi-206
Atomic number (Z):  83
Mass number (A):  206
Neutron number (N):  123

Radioactive decay

Decay modes:  β+, Electron capture
Half-life:  6.243 [d]
Decay constant:  1.2850e-06 [1/s]
Daughters:  Pb-206 (100.0%)
Radioactive daughters:  None

Dosimetric constants

Mean alpha energy:  0.0 [MeV]
Mean electron energy:  0.1379 [MeV]
Mean photon energy:  3.27958 [MeV]
Air kerma rate constant, Γ10:  1.362e-16 [Gy·m2/Bq·s]
Air kerma coefficient, Kair:  1.362e-16 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or electrons), Δwp:  2.209e-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-:  2.209e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp:  5.254e-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-206 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-206 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-206 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-206 Summary Spectrum.csv

 

Energy [MeV]

Yield [#/nt] if > 0.01

Radiation type

2.66202e-05

1.904e+01

X-ray

2.37967e-03

7.165e-02

X-ray

9.21570e-03

1.289e-02

X-ray

1.04453e-02

2.255e-02

X-ray

1.05510e-02

1.985e-01

X-ray

1.26275e-02

3.821e-02

X-ray

1.26563e-02

1.234e-01

X-ray

1.27924e-02

1.008e-02

X-ray

1.48158e-02

2.519e-02

X-ray

7.30390e-02

3.232e-01

X-ray

7.52501e-02

5.428e-01

X-ray

8.47407e-02

6.046e-02

X-ray

8.52354e-02

1.171e-01

X-ray

8.75342e-02

1.442e-02

X-ray

8.76558e-02

2.833e-02

X-ray

1.83977e-01

1.582e-01

Gamma

2.62700e-01

3.016e-02

Gamma

3.43510e-01

2.344e-01

Gamma

3.98000e-01

1.074e-01

Gamma

4.97060e-01

1.531e-01

Gamma

5.16180e-01

4.075e-01

Gamma

5.37450e-01

3.046e-01

Gamma

6.20480e-01

5.756e-02

Gamma

6.32250e-01

4.470e-02

Gamma

6.57160e-01

1.909e-02

Gamma

8.03100e-01

9.890e-01

Gamma

8.81010e-01

6.616e-01

Gamma

8.95120e-01

1.566e-01

Gamma

1.01863e+00

7.596e-02

Gamma

1.09826e+00

1.350e-01

Gamma

1.40501e+00

1.434e-02

Gamma

1.59527e+00

5.014e-02

Gamma

1.71870e+00

3.185e-01

Gamma

1.87865e+00

2.008e-02

Gamma

4.21725e-05

4.281e+00

Auger electron

8.23719e-05

6.163e+00

Auger electron

1.73850e-04

3.249e+00

Auger electron

4.23313e-04

7.289e-01

Auger electron

9.29953e-04

2.573e-01

Auger electron

1.91023e-03

1.730e+00

Auger electron

2.17059e-03

2.156e-01

Auger electron

2.56060e-03

1.092e-02

Auger electron

8.04656e-03

5.040e-01

Auger electron

1.04229e-02

2.229e-01

Auger electron

1.28274e-02

2.363e-02

Auger electron

5.87487e-02

2.737e-02

Auger electron

7.07077e-02

1.497e-02

Auger electron

9.56870e-02

2.262e-01

Conversion electron

1.68130e-01

3.508e-02

Conversion electron

1.74410e-01

1.585e-02

Conversion electron

2.55220e-01

5.974e-02

Conversion electron

3.09710e-01

1.844e-02

Conversion electron

4.08770e-01

1.451e-02

Conversion electron

4.27890e-01

1.981e-02

Conversion electron

4.49160e-01

2.364e-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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