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Radionuclide Dosimetric Data Sheets
Bismuth-216
Summary data
General
Classification
Isotope: Bi-216
Atomic number (Z): 83
Mass number (A): 216
Neutron number (N): 133
Radioactive decay
Decay modes: β-
Half-life: 2.17 [m]
Decay constant: 5.3237e-03 [1/s]
Daughters: Po-216 (100.0%)
Radioactive daughters: Po-216
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 1.3295 [MeV]
Mean photon energy: 0.73847 [MeV]
Air kerma rate constant, Γ10: 2.880e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 2.880e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 2.130e-13 [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-:
2.130e-13 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 1.183e-13
[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/Bi-216 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-216 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-216 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
3.84169e-05 |
8.680e-01 |
X-ray |
|
7.71271e-02 |
1.404e-02 |
X-ray |
|
7.96070e-02 |
2.337e-02 |
X-ray |
|
4.19210e-01 |
4.400e-01 |
Gamma |
|
5.49800e-01 |
1.000e+00 |
Gamma |
|
1.20444e+00 |
4.757e-01 |
Beta |
|
1.38504e+00 |
5.243e-01 |
Beta |
|
3.94967e-05 |
2.073e-01 |
Auger electron |
|
9.72033e-05 |
2.704e-01 |
Auger electron |
|
1.74875e-04 |
1.458e-01 |
Auger electron |
|
4.37838e-04 |
3.369e-02 |
Auger electron |
|
2.01796e-03 |
7.866e-02 |
Auger electron |
|
2.31253e-03 |
1.084e-02 |
Auger electron |
|
8.53836e-03 |
2.285e-02 |
Auger electron |
|
1.10935e-02 |
1.045e-02 |
Auger electron |
|
3.25786e-01 |
3.109e-02 |
Conversion electron |
|
4.56376e-01 |
1.844e-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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