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Radionuclide Dosimetric Data Sheets
Indium-110m
Summary data
General
Classification
Isotope: In-110m
Atomic number (Z): 49
Mass number (A): 110
Neutron number (N): 61
Radioactive decay
Decay modes: β+, Electron capture
Half-life: 69.1 [m]
Decay constant: 1.6718e-04 [1/s]
Daughters: Cd-110 (100.0%)
Radioactive daughters: None
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.62824 [MeV]
Mean photon energy: 1.57824 [MeV]
Air kerma rate constant, Γ10: 3.559e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 5.950e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 1.007e-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-:
1.007e-13 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 2.529e-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-110m 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-110m 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-110m 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-110m Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.71475e-05 |
2.861e+00 |
X-ray |
|
3.12254e-03 |
1.104e-02 |
X-ray |
|
2.29571e-02 |
8.067e-02 |
X-ray |
|
2.31527e-02 |
1.516e-01 |
X-ray |
|
2.60401e-02 |
1.338e-02 |
X-ray |
|
2.60753e-02 |
2.599e-02 |
X-ray |
|
5.11000e-01 |
1.235e+00 |
Annihilation photon |
|
6.57750e-01 |
9.810e-01 |
Gamma |
|
1.12577e+00 |
1.040e-02 |
Gamma |
|
2.12940e+00 |
2.158e-02 |
Gamma |
|
2.21133e+00 |
1.746e-02 |
Gamma |
|
2.31741e+00 |
1.290e-02 |
Gamma |
|
1.01464e+00 |
6.113e-01 |
Positron |
|
3.67758e-05 |
1.011e+00 |
Auger electron |
|
1.28078e-04 |
2.946e-01 |
Auger electron |
|
1.65989e-04 |
6.229e-02 |
Auger electron |
|
3.45349e-04 |
7.052e-01 |
Auger electron |
|
2.61032e-03 |
2.720e-01 |
Auger electron |
|
3.05336e-03 |
6.262e-02 |
Auger electron |
|
1.92752e-02 |
3.580e-02 |
Auger electron |
|
2.24238e-02 |
1.473e-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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