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Radionuclide Dosimetric Data Sheets
Indium-105
Summary data
General
Classification
Isotope: In-105
Atomic number (Z): 49
Mass number (A): 105
Neutron number (N): 56
Radioactive decay
Decay modes: β+, Electron capture
Half-life: 5.07 [m]
Decay constant: 2.2786e-03 [1/s]
Daughters: Cd-105 (100.0%)
Radioactive daughters: Cd-105
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 1.03582 [MeV]
Mean photon energy: 1.93074 [MeV]
Air kerma rate constant, Γ10: 4.233e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 7.071e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 1.660e-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-:
1.660e-13 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 3.093e-13
[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/In-105 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/In-105 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/In-105 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/In-105 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.71477e-05 |
2.950e+00 |
X-ray |
|
3.12254e-03 |
1.140e-02 |
X-ray |
|
2.29571e-02 |
8.347e-02 |
X-ray |
|
2.31527e-02 |
1.569e-01 |
X-ray |
|
2.60401e-02 |
1.384e-02 |
X-ray |
|
2.60753e-02 |
2.689e-02 |
X-ray |
|
1.28900e-01 |
1.049e-02 |
Gamma |
|
1.31470e-01 |
4.130e-01 |
Gamma |
|
1.96250e-01 |
5.906e-02 |
Gamma |
|
2.60270e-01 |
1.565e-01 |
Gamma |
|
5.10670e-01 |
3.717e-02 |
Gamma |
|
5.11000e-01 |
1.467e+00 |
Annihilation photon |
|
5.70400e-01 |
1.652e-02 |
Gamma |
|
6.04120e-01 |
9.210e-02 |
Gamma |
|
6.39740e-01 |
5.410e-02 |
Gamma |
|
6.42400e-01 |
1.611e-02 |
Gamma |
|
6.68300e-01 |
7.847e-02 |
Gamma |
|
6.73400e-01 |
1.735e-02 |
Gamma |
|
7.01260e-01 |
1.136e-02 |
Gamma |
|
7.66850e-01 |
1.115e-02 |
Gamma |
|
7.70750e-01 |
1.859e-02 |
Gamma |
|
8.32580e-01 |
7.310e-02 |
Gamma |
|
8.54680e-01 |
1.334e-02 |
Gamma |
|
8.96400e-01 |
1.115e-02 |
Gamma |
|
1.12610e+00 |
1.404e-02 |
Gamma |
|
1.13906e+00 |
1.446e-02 |
Gamma |
|
1.19034e+00 |
1.487e-02 |
Gamma |
|
1.25564e+00 |
1.735e-02 |
Gamma |
|
1.38698e+00 |
3.469e-02 |
Gamma |
|
9.87534e-01 |
1.391e-02 |
Positron |
|
9.95222e-01 |
1.093e-02 |
Positron |
|
1.04755e+00 |
1.004e-02 |
Positron |
|
1.07316e+00 |
1.590e-02 |
Positron |
|
1.09767e+00 |
5.168e-02 |
Positron |
|
1.21229e+00 |
2.087e-02 |
Positron |
|
1.22383e+00 |
1.391e-02 |
Positron |
|
1.35560e+00 |
5.267e-02 |
Positron |
|
1.37093e+00 |
5.565e-02 |
Positron |
|
1.38442e+00 |
7.155e-02 |
Positron |
|
1.46261e+00 |
2.683e-02 |
Positron |
|
1.62479e+00 |
7.752e-02 |
Positron |
|
1.68591e+00 |
2.355e-01 |
Positron |
|
3.67790e-05 |
1.042e+00 |
Auger electron |
|
1.28130e-04 |
3.036e-01 |
Auger electron |
|
1.65835e-04 |
6.352e-02 |
Auger electron |
|
3.45322e-04 |
7.275e-01 |
Auger electron |
|
2.61015e-03 |
2.809e-01 |
Auger electron |
|
3.05314e-03 |
6.465e-02 |
Auger electron |
|
1.92752e-02 |
3.704e-02 |
Auger electron |
|
2.24238e-02 |
1.524e-02 |
Auger electron |
|
1.04782e-01 |
7.838e-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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