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Radionuclide Dosimetric Data Sheets
Indium-119
Summary data
General
Classification
Isotope: In-119
Atomic number (Z): 49
Mass number (A): 119
Neutron number (N): 70
Radioactive decay
Decay modes: β-
Half-life: 2.4 [m]
Decay constant: 4.8135e-03 [1/s]
Daughters: Sn-119m (0.948%), Sn-119 (99.1%)
Radioactive daughters: Sn-119m
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.61478 [MeV]
Mean photon energy: 0.77014 [MeV]
Air kerma rate constant, Γ10: 2.987e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 2.987e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 9.850e-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-:
9.850e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 1.234e-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-119 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-119 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-119 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-119 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.08560e-05 |
1.183e+01 |
X-ray |
|
3.43219e-03 |
1.225e-02 |
X-ray |
|
3.72998e-03 |
1.088e-02 |
X-ray |
|
2.38710e-02 |
1.597e-01 |
Gamma |
|
7.63140e-01 |
9.920e-01 |
Gamma |
|
5.94312e-01 |
9.953e-01 |
Beta |
|
1.13831e-05 |
5.842e+00 |
Auger electron |
|
2.99912e-05 |
2.166e+00 |
Auger electron |
|
1.18565e-04 |
7.398e-01 |
Auger electron |
|
3.23448e-04 |
3.429e-01 |
Auger electron |
|
4.02636e-04 |
1.250e+00 |
Auger electron |
|
4.92910e-04 |
3.008e-02 |
Auger electron |
|
2.96810e-03 |
4.886e-01 |
Auger electron |
|
3.50113e-03 |
1.288e-01 |
Auger electron |
|
1.94307e-02 |
6.092e-01 |
Conversion electron |
|
1.97102e-02 |
5.054e-02 |
Conversion electron |
|
1.99442e-02 |
1.412e-02 |
Conversion electron |
|
2.31607e-02 |
1.328e-01 |
Conversion electron |
|
2.38710e-02 |
2.986e-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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