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Radionuclide Dosimetric Data Sheets
Antimony-117
Summary data
General
Classification
Isotope: Sb-117
Atomic number (Z): 51
Mass number (A): 117
Neutron number (N): 66
Radioactive decay
Decay modes: β+, Electron capture
Half-life: 2.8 [h]
Decay constant: 6.8765e-05 [1/s]
Daughters: Sn-117 (100.0%)
Radioactive daughters: None
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.02981 [MeV]
Mean photon energy: 0.18642 [MeV]
Air kerma rate constant, Γ10: 1.142e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 1.213e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 4.776e-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-:
4.776e-15 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 2.987e-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/Sb-117 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/Sb-117 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/Sb-117 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/Sb-117 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.08543e-05 |
1.528e+01 |
X-ray |
|
3.43219e-03 |
3.385e-02 |
X-ray |
|
3.65722e-03 |
1.925e-02 |
X-ray |
|
2.50232e-02 |
2.382e-01 |
X-ray |
|
2.52572e-02 |
4.457e-01 |
X-ray |
|
2.84307e-02 |
4.021e-02 |
X-ray |
|
2.84736e-02 |
7.808e-02 |
X-ray |
|
2.90882e-02 |
1.609e-02 |
X-ray |
|
1.58562e-01 |
8.590e-01 |
Gamma |
|
5.11000e-01 |
3.679e-02 |
Annihilation photon |
|
2.62785e-01 |
1.839e-02 |
Positron |
|
1.13311e-05 |
7.555e+00 |
Auger electron |
|
3.03628e-05 |
2.600e+00 |
Auger electron |
|
1.23885e-04 |
8.394e-01 |
Auger electron |
|
2.72353e-04 |
1.499e-01 |
Auger electron |
|
3.96293e-04 |
1.891e+00 |
Auger electron |
|
4.70168e-04 |
4.310e-02 |
Auger electron |
|
2.84852e-03 |
7.466e-01 |
Auger electron |
|
3.36539e-03 |
1.924e-01 |
Auger electron |
|
3.90163e-03 |
1.276e-02 |
Auger electron |
|
2.09334e-02 |
8.982e-02 |
Auger electron |
|
2.44171e-02 |
3.825e-02 |
Auger electron |
|
1.29378e-01 |
1.180e-01 |
Conversion electron |
|
1.54122e-01 |
1.387e-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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