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Radionuclide Dosimetric Data Sheets

Tellurium-133

Isotope:  Te-133
Atomic number (Z):  52
Mass number (A):  133
Neutron number (N):  81

Decay modes:  β-
Half-life:  12.5 [m]
Decay constant:  9.2420e-04 [1/s]
Daughters:  I-133 (100.0%)
Radioactive daughters:  I-133

Mean alpha energy:  0.0 [MeV]
Mean electron energy:  0.6897 [MeV]
Mean photon energy:  1.20067 [MeV]
Air kerma rate constant, Γ₁₀:  4.153e-17 [Gy·m²/Bq·s]
Air kerma coefficient, K_air:  4.153e-17 [Gy·m²/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or electrons), Δ_wp:  1.105e-13 [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-:  1.105e-13 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δ_p:  1.924e-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-133 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-133 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-133 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-133 Summary Spectrum.csv

 

Energy [MeV]	Yield [#/nt] if > 0.01	Radiation type
1.52660e-05	4.200e-01	X-ray
2.86096e-02	1.391e-02	X-ray
3.12080e-01	6.240e-01	Gamma
4.07630e-01	2.708e-01	Gamma
7.19710e-01	8.861e-02	Gamma
7.86930e-01	5.398e-02	Gamma
8.44360e-01	3.307e-02	Gamma
9.30710e-01	3.806e-02	Gamma
9.97660e-01	1.036e-02	Gamma
1.00072e+00	3.619e-02	Gamma
1.02113e+00	2.808e-02	Gamma
1.06161e+00	1.186e-02	Gamma
1.25208e+00	1.435e-02	Gamma
1.33321e+00	1.067e-01	Gamma
1.71761e+00	3.182e-02	Gamma
1.88152e+00	1.217e-02	Gamma
2.13651e+00	1.248e-02	Gamma
4.71302e-02	1.047e-02	Beta
1.18768e-01	2.153e-02	Beta
2.21984e-01	1.234e-02	Beta
2.39273e-01	1.313e-02	Beta
2.45499e-01	2.251e-02	Beta
2.67737e-01	2.360e-02	Beta
3.00536e-01	1.066e-02	Beta
3.11784e-01	1.382e-02	Beta
4.38924e-01	1.027e-01	Beta
4.58551e-01	1.313e-02	Beta
5.04454e-01	3.456e-02	Beta
5.87267e-01	1.185e-02	Beta
6.05043e-01	1.294e-01	Beta
6.14039e-01	3.259e-02	Beta
8.80273e-01	2.795e-01	Beta
1.06727e+00	2.054e-01	Beta
2.70121e-05	6.293e-02	Auger electron
2.89499e-05	2.024e-01	Auger electron
1.25013e-04	2.318e-02	Auger electron
4.76928e-04	5.397e-02	Auger electron
3.20445e-03	2.119e-02	Auger electron
2.78916e-01	1.851e-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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