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Radionuclide Dosimetric Data Sheets
Iodine-130m
Summary data
General
Classification
Isotope: I-130m
Atomic number (Z): 53
Mass number (A): 130
Neutron number (N): 77
Radioactive decay
Decay modes: β-, Internal transition
Half-life: 8.84 [m]
Decay constant: 1.3068e-03 [1/s]
Daughters: I-130 (84.0%), Xe-130 (16.0%)
Radioactive daughters: I-130
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.17782 [MeV]
Mean photon energy: 0.10966 [MeV]
Air kerma rate constant, Γ10: 4.945e-18 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 4.945e-18 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 2.849e-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-:
2.849e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 1.757e-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/I-130m 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/I-130m 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/I-130m 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/I-130m Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.52660e-05 |
9.632e+00 |
X-ray |
|
1.66175e-05 |
1.490e-02 |
X-ray |
|
3.92520e-03 |
3.080e-02 |
X-ray |
|
2.83065e-02 |
4.939e-02 |
X-ray |
|
2.86096e-02 |
9.170e-02 |
X-ray |
|
3.22942e-02 |
1.654e-02 |
X-ray |
|
5.36066e-01 |
1.568e-01 |
Gamma |
|
5.86049e-01 |
1.068e-02 |
Gamma |
|
7.18412e-01 |
1.159e-02 |
Beta |
|
9.84118e-01 |
1.411e-01 |
Beta |
|
2.70124e-05 |
1.465e+00 |
Auger electron |
|
2.89562e-05 |
4.639e+00 |
Auger electron |
|
1.22445e-04 |
5.504e-01 |
Auger electron |
|
3.43182e-04 |
1.109e-01 |
Auger electron |
|
4.77748e-04 |
1.214e+00 |
Auger electron |
|
5.81039e-04 |
5.816e-02 |
Auger electron |
|
3.18921e-03 |
4.669e-01 |
Auger electron |
|
3.82460e-03 |
1.378e-01 |
Auger electron |
|
4.48483e-03 |
1.004e-02 |
Auger electron |
|
6.79600e-03 |
1.942e-01 |
Conversion electron |
|
2.35598e-02 |
1.483e-02 |
Auger electron |
|
3.47981e-02 |
1.627e-01 |
Conversion electron |
|
3.51025e-02 |
2.223e-02 |
Conversion electron |
|
3.54055e-02 |
3.126e-01 |
Conversion electron |
|
3.90902e-02 |
1.199e-01 |
Conversion electron |
|
3.99600e-02 |
2.826e-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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