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Radionuclide Dosimetric Data Sheets

Tellurium-119m

Isotope:  Te-119m
Atomic number (Z):  52
Mass number (A):  119
Neutron number (N):  67

Decay modes:  β+, Electron capture
Half-life:  4.7 [d]
Decay constant:  1.7069e-06 [1/s]
Daughters:  Sb-119 (100.0%)
Radioactive daughters:  Sb-119

Mean alpha energy:  0.0 [MeV]
Mean electron energy:  0.01801 [MeV]
Mean photon energy:  1.50589 [MeV]
Air kerma rate constant, Γ₁₀:  5.639e-17 [Gy·m²/Bq·s]
Air kerma coefficient, K_air:  5.654e-17 [Gy·m²/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or electrons), Δ_wp:  2.886e-15 [Gy·kg/Bq·s]
Equilibrium dose constant for alphas, Δ_α:  0.000e+00 [Gy·kg/Bq·s]
Equilibrium dose constant for betas/electrons, Δ_β-,β+,e-:  2.886e-15 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δ_p:  2.413e-13 [Gy·kg/Bq·s]

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-119m DPK.csv

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-119m Summary Spectrum.csv

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-119m Beta Spectrum.csv

 

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-119m Summary Spectrum.csv

 

Energy [MeV]	Yield [#/nt] if > 0.01	Radiation type
1.22327e-05	1.392e+01	X-ray
3.59266e-03	3.353e-02	X-ray
3.83820e-03	1.917e-02	X-ray
2.60930e-02	2.237e-01	X-ray
2.63486e-02	4.174e-01	X-ray
2.96698e-02	3.805e-02	X-ray
2.97173e-02	7.383e-02	X-ray
3.03709e-02	1.535e-02	X-ray
1.53590e-01	6.620e-01	Gamma
1.64340e-01	1.298e-02	Gamma
2.70530e-01	2.800e-01	Gamma
9.12600e-01	6.249e-02	Gamma
9.42210e-01	5.091e-02	Gamma
9.76370e-01	2.714e-02	Gamma
9.79290e-01	3.012e-02	Gamma
1.01320e+00	1.655e-02	Gamma
1.04844e+00	3.191e-02	Gamma
1.08135e+00	1.595e-02	Gamma
1.09575e+00	2.238e-02	Gamma
1.13675e+00	7.659e-02	Gamma
1.21273e+00	6.620e-01	Gamma
1.36639e+00	1.066e-02	Gamma
2.08957e+00	4.687e-02	Gamma
1.68968e-05	6.853e+00	Auger electron
2.73549e-05	2.315e+00	Auger electron
1.21950e-04	7.758e-01	Auger electron
2.84684e-04	1.426e-01	Auger electron
4.22600e-04	1.733e+00	Auger electron
5.05116e-04	5.249e-02	Auger electron
2.96601e-03	6.820e-01	Auger electron
3.52096e-03	1.846e-01	Auger electron
4.09662e-03	1.269e-02	Auger electron
2.17904e-02	7.799e-02	Auger electron
2.54497e-02	3.378e-02	Auger electron
1.23111e-01	3.241e-02	Conversion electron
2.40051e-01	1.011e-02	Conversion electron

 

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

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

 

 

 

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