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Radionuclide Dosimetric Data Sheets
Strontium-80
Summary data
General
Classification
Isotope: Sr-80
Atomic number (Z): 38
Mass number (A): 80
Neutron number (N): 42
Radioactive decay
Decay modes: β+, Electron capture
Half-life: 106.3 [m]
Decay constant: 1.0868e-04 [1/s]
Daughters: Rb-80 (100.0%)
Radioactive daughters: Rb-80
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.04184 [MeV]
Mean photon energy: 0.43709 [MeV]
Air kerma rate constant, Γ10: 2.896e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 3.283e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 6.704e-15 [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-:
6.704e-15 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 7.003e-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/Sr-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/Sr-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/Sr-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/Sr-80 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.52775e-05 |
8.161e+00 |
X-ray |
|
1.68753e-03 |
1.215e-02 |
X-ray |
|
1.32919e-02 |
1.546e-01 |
X-ray |
|
1.33539e-02 |
2.973e-01 |
X-ray |
|
1.49123e-02 |
2.216e-02 |
X-ray |
|
1.49217e-02 |
4.320e-02 |
X-ray |
|
1.75000e-01 |
1.014e-01 |
Gamma |
|
2.35900e-01 |
4.173e-02 |
Gamma |
|
3.16000e-01 |
1.053e-02 |
Gamma |
|
3.78800e-01 |
4.173e-02 |
Gamma |
|
4.14100e-01 |
3.237e-02 |
Gamma |
|
5.11000e-01 |
1.996e-01 |
Annihilation photon |
|
5.53400e-01 |
6.864e-02 |
Gamma |
|
5.89000e-01 |
3.900e-01 |
Gamma |
|
3.67751e-01 |
9.182e-02 |
Positron |
|
1.26043e-05 |
2.392e+00 |
Auger electron |
|
6.50080e-05 |
2.398e+00 |
Auger electron |
|
7.35432e-05 |
9.681e-01 |
Auger electron |
|
9.22924e-05 |
4.272e-02 |
Auger electron |
|
1.06851e-04 |
1.955e-01 |
Auger electron |
|
1.48974e-03 |
9.043e-01 |
Auger electron |
|
1.61153e-03 |
7.326e-02 |
Auger electron |
|
1.14024e-02 |
1.970e-01 |
Auger electron |
|
1.30522e-02 |
6.466e-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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