<= Return to MIRDspec isotope database
Radionuclide Dosimetric Data Sheets
Indium-108
Summary data
General
Classification
Isotope: In-108
Atomic number (Z): 49
Mass number (A): 108
Neutron number (N): 59
Radioactive decay
Decay modes: β+, Electron capture
Half-life: 58.0 [m]
Decay constant: 1.9918e-04 [1/s]
Daughters: Cd-108 (100.0%)
Radioactive daughters: None
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.162 [MeV]
Mean photon energy: 3.9164 [MeV]
Air kerma rate constant, Γ10: 1.346e-16 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 1.440e-16 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 2.596e-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-:
2.596e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 6.275e-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-108 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-108 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-108 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-108 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.71475e-05 |
5.819e+00 |
X-ray |
|
3.12254e-03 |
2.246e-02 |
X-ray |
|
3.31083e-03 |
1.147e-02 |
X-ray |
|
2.29571e-02 |
1.641e-01 |
X-ray |
|
2.31527e-02 |
3.085e-01 |
X-ray |
|
2.60401e-02 |
2.722e-02 |
X-ray |
|
2.60753e-02 |
5.288e-02 |
X-ray |
|
2.66158e-02 |
1.075e-02 |
X-ray |
|
2.42600e-01 |
4.110e-01 |
Gamma |
|
2.66400e-01 |
3.151e-02 |
Gamma |
|
3.25600e-01 |
1.370e-01 |
Gamma |
|
5.11000e-01 |
4.881e-01 |
Annihilation photon |
|
5.69000e-01 |
5.754e-02 |
Gamma |
|
6.32900e-01 |
1.000e+00 |
Gamma |
|
6.37400e-01 |
1.781e-02 |
Gamma |
|
6.48300e-01 |
3.562e-02 |
Gamma |
|
7.30800e-01 |
9.316e-02 |
Gamma |
|
7.54700e-01 |
1.781e-02 |
Gamma |
|
8.26200e-01 |
1.014e-02 |
Gamma |
|
8.71400e-01 |
1.507e-02 |
Gamma |
|
8.75400e-01 |
1.000e+00 |
Gamma |
|
9.68800e-01 |
2.740e-02 |
Gamma |
|
1.03280e+00 |
3.535e-01 |
Gamma |
|
1.05660e+00 |
2.877e-01 |
Gamma |
|
1.09320e+00 |
5.480e-02 |
Gamma |
|
1.13720e+00 |
1.123e-02 |
Gamma |
|
1.14200e+00 |
1.507e-02 |
Gamma |
|
1.19860e+00 |
3.151e-02 |
Gamma |
|
1.24660e+00 |
1.219e-02 |
Gamma |
|
1.29930e+00 |
1.507e-01 |
Gamma |
|
1.32200e+00 |
1.918e-02 |
Gamma |
|
1.39750e+00 |
1.274e-02 |
Gamma |
|
1.48580e+00 |
4.384e-02 |
Gamma |
|
1.51280e+00 |
1.370e-02 |
Gamma |
|
1.60630e+00 |
8.494e-02 |
Gamma |
|
1.63810e+00 |
1.055e-02 |
Gamma |
|
1.85280e+00 |
1.055e-02 |
Gamma |
|
2.04940e+00 |
1.082e-02 |
Gamma |
|
5.08400e-01 |
1.055e-02 |
Positron |
|
5.91292e-01 |
1.630e-01 |
Positron |
|
7.10814e-01 |
4.602e-02 |
Positron |
|
3.67761e-05 |
2.055e+00 |
Auger electron |
|
1.28082e-04 |
5.993e-01 |
Auger electron |
|
1.65975e-04 |
1.266e-01 |
Auger electron |
|
3.45346e-04 |
1.434e+00 |
Auger electron |
|
4.03067e-04 |
1.633e-02 |
Auger electron |
|
2.61030e-03 |
5.533e-01 |
Auger electron |
|
3.05333e-03 |
1.274e-01 |
Auger electron |
|
1.92752e-02 |
7.284e-02 |
Auger electron |
|
2.24238e-02 |
2.997e-02 |
Auger electron |
|
2.15912e-01 |
1.501e-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)
<= Return to MIRDspec isotope database
