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Radionuclide Dosimetric Data Sheets
Tin-111
Summary data
General
Classification
Isotope: Sn-111
Atomic number (Z): 50
Mass number (A): 111
Neutron number (N): 61
Radioactive decay
Decay modes: β+, Electron capture
Half-life: 35.3 [m]
Decay constant: 3.2726e-04 [1/s]
Daughters: In-111 (99.8%), In-111m (0.207%)
Radioactive daughters: In-111, In-111m
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.19153 [MeV]
Mean photon energy: 0.4903 [MeV]
Air kerma rate constant, Γ10: 1.033e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 2.174e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 3.069e-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-:
3.069e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 7.855e-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/Sn-111 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/Sn-111 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/Sn-111 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/Sn-111 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
8.12529e-06 |
9.949e+00 |
X-ray |
|
3.27540e-03 |
2.013e-02 |
X-ray |
|
3.48147e-03 |
1.140e-02 |
X-ray |
|
2.39785e-02 |
1.488e-01 |
X-ray |
|
2.41926e-02 |
2.792e-01 |
X-ray |
|
2.72214e-02 |
2.491e-02 |
X-ray |
|
2.72603e-02 |
4.837e-02 |
X-ray |
|
5.11000e-01 |
5.894e-01 |
Annihilation photon |
|
7.61970e-01 |
1.479e-02 |
Gamma |
|
1.15298e+00 |
2.650e-02 |
Gamma |
|
1.61047e+00 |
1.312e-02 |
Gamma |
|
1.91470e+00 |
1.988e-02 |
Gamma |
|
6.34747e-01 |
2.947e-01 |
Positron |
|
8.85907e-06 |
4.934e+00 |
Auger electron |
|
3.35256e-05 |
1.735e+00 |
Auger electron |
|
1.25701e-04 |
5.403e-01 |
Auger electron |
|
2.62815e-04 |
9.496e-02 |
Auger electron |
|
3.70855e-04 |
1.221e+00 |
Auger electron |
|
4.36982e-04 |
2.008e-02 |
Auger electron |
|
2.73429e-03 |
4.838e-01 |
Auger electron |
|
3.21459e-03 |
1.183e-01 |
Auger electron |
|
2.00957e-02 |
6.082e-02 |
Auger electron |
|
2.34091e-02 |
2.546e-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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