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Radionuclide Dosimetric Data Sheets
Tellurium-119
Summary data
General
Classification
Isotope: Te-119
Atomic number (Z): 52
Mass number (A): 119
Neutron number (N): 67
Radioactive decay
Decay modes: β+, Electron capture
Half-life: 16.05 [h]
Decay constant: 1.1996e-05 [1/s]
Daughters: Sb-119 (100.0%)
Radioactive daughters: Sb-119
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.0143 [MeV]
Mean photon energy: 0.76793 [MeV]
Air kerma rate constant, Γ10: 3.212e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 3.291e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 2.291e-15 [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-:
2.291e-15 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 1.230e-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/Te-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/Te-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/Te-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/Te-119 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.22327e-05 |
1.304e+01 |
X-ray |
|
3.59266e-03 |
3.149e-02 |
X-ray |
|
3.83820e-03 |
1.800e-02 |
X-ray |
|
2.60930e-02 |
2.108e-01 |
X-ray |
|
2.63486e-02 |
3.934e-01 |
X-ray |
|
2.96698e-02 |
3.586e-02 |
X-ray |
|
2.97173e-02 |
6.958e-02 |
X-ray |
|
3.03709e-02 |
1.447e-02 |
X-ray |
|
5.11000e-01 |
4.104e-02 |
Annihilation photon |
|
6.44010e-01 |
8.400e-01 |
Gamma |
|
6.99850e-01 |
1.008e-01 |
Gamma |
|
1.41319e+00 |
1.092e-02 |
Gamma |
|
1.74965e+00 |
3.948e-02 |
Gamma |
|
2.85454e-01 |
1.892e-02 |
Positron |
|
1.68964e-05 |
6.418e+00 |
Auger electron |
|
2.73570e-05 |
2.167e+00 |
Auger electron |
|
1.21987e-04 |
7.259e-01 |
Auger electron |
|
2.83860e-04 |
1.322e-01 |
Auger electron |
|
4.22566e-04 |
1.624e+00 |
Auger electron |
|
5.05005e-04 |
4.919e-02 |
Auger electron |
|
2.96545e-03 |
6.393e-01 |
Auger electron |
|
3.52031e-03 |
1.730e-01 |
Auger electron |
|
4.09584e-03 |
1.189e-02 |
Auger electron |
|
2.17904e-02 |
7.350e-02 |
Auger electron |
|
2.54497e-02 |
3.184e-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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