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Radionuclide Dosimetric Data Sheets
Bromine-80
Summary data
General
Classification
Isotope: Br-80
Atomic number (Z): 35
Mass number (A): 80
Neutron number (N): 45
Radioactive decay
Decay modes: β-, β+, Electron capture
Half-life: 17.68 [m]
Decay constant: 6.5342e-04 [1/s]
Daughters: Kr-80 (91.7%), Se-80 (8.3%)
Radioactive daughters: None
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.72466 [MeV]
Mean photon energy: 0.07607 [MeV]
Air kerma rate constant, Γ10: 3.460e-18 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 4.315e-18 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 1.161e-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-:
1.161e-13 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 1.219e-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/Br-80 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/Br-80 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/Br-80 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/Br-80 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.58643e-05 |
4.602e-01 |
X-ray |
|
1.11804e-02 |
1.808e-02 |
X-ray |
|
5.11000e-01 |
4.418e-02 |
Annihilation photon |
|
6.16300e-01 |
6.694e-02 |
Gamma |
|
6.65800e-01 |
1.082e-02 |
Gamma |
|
3.68156e-01 |
2.208e-02 |
Positron |
|
5.23529e-01 |
6.200e-02 |
Beta |
|
8.02895e-01 |
8.500e-01 |
Beta |
|
3.25137e-05 |
2.125e-01 |
Auger electron |
|
5.45947e-05 |
7.861e-02 |
Auger electron |
|
9.46731e-05 |
1.381e-02 |
Auger electron |
|
1.23737e-03 |
6.774e-02 |
Auger electron |
|
9.62662e-03 |
1.683e-02 |
Auger 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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