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Radionuclide Dosimetric Data Sheets
Tellurium-115m
Summary data
General
Classification
Isotope: Te-115m
Atomic number (Z): 52
Mass number (A): 115
Neutron number (N): 63
Radioactive decay
Decay modes: β+, Electron capture
Half-life: 6.7 [m]
Decay constant: 1.7242e-03 [1/s]
Daughters: Sb-115 (100.0%)
Radioactive daughters: Sb-115
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.69388 [MeV]
Mean photon energy: 2.60412 [MeV]
Air kerma rate constant, Γ10: 7.021e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 9.247e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 1.112e-13 [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-:
1.112e-13 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 4.172e-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-115m 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-115m 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-115m 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-115m Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.22327e-05 |
5.676e+00 |
X-ray |
|
3.59266e-03 |
1.373e-02 |
X-ray |
|
2.60930e-02 |
9.202e-02 |
X-ray |
|
2.63486e-02 |
1.717e-01 |
X-ray |
|
2.96698e-02 |
1.566e-02 |
X-ray |
|
2.97173e-02 |
3.037e-02 |
X-ray |
|
3.03100e-01 |
2.700e-02 |
Gamma |
|
4.05900e-01 |
2.400e-02 |
Gamma |
|
5.11000e-01 |
1.150e+00 |
Annihilation photon |
|
5.48700e-01 |
3.600e-02 |
Gamma |
|
5.55700e-01 |
1.650e-02 |
Gamma |
|
5.70000e-01 |
2.100e-02 |
Gamma |
|
6.10600e-01 |
3.900e-02 |
Gamma |
|
6.89400e-01 |
3.900e-02 |
Gamma |
|
7.23600e-01 |
1.800e-01 |
Gamma |
|
7.70400e-01 |
3.420e-01 |
Gamma |
|
7.80500e-01 |
2.100e-02 |
Gamma |
|
1.03190e+00 |
7.800e-02 |
Gamma |
|
1.07170e+00 |
1.290e-01 |
Gamma |
|
1.09870e+00 |
9.000e-02 |
Gamma |
|
1.11530e+00 |
2.100e-02 |
Gamma |
|
1.14340e+00 |
1.500e-02 |
Gamma |
|
1.15570e+00 |
2.700e-02 |
Gamma |
|
1.20550e+00 |
3.300e-02 |
Gamma |
|
1.27930e+00 |
1.020e-01 |
Gamma |
|
1.35080e+00 |
7.800e-02 |
Gamma |
|
1.40810e+00 |
3.300e-02 |
Gamma |
|
1.49170e+00 |
3.300e-02 |
Gamma |
|
1.50410e+00 |
1.020e-01 |
Gamma |
|
1.56170e+00 |
3.600e-02 |
Gamma |
|
1.65480e+00 |
6.300e-02 |
Gamma |
|
1.93600e+00 |
3.300e-02 |
Gamma |
|
1.98620e+00 |
1.260e-02 |
Gamma |
|
2.10440e+00 |
8.400e-02 |
Gamma |
|
2.21530e+00 |
5.700e-02 |
Gamma |
|
5.20909e-01 |
1.327e-02 |
Positron |
|
5.67107e-01 |
2.594e-02 |
Positron |
|
7.66548e-01 |
3.880e-02 |
Positron |
|
8.16665e-01 |
3.268e-02 |
Positron |
|
8.30278e-01 |
2.961e-02 |
Positron |
|
1.09126e+00 |
4.595e-02 |
Positron |
|
1.29170e+00 |
9.068e-02 |
Positron |
|
1.43239e+00 |
2.890e-01 |
Positron |
|
1.68961e-05 |
2.794e+00 |
Auger electron |
|
2.73582e-05 |
9.430e-01 |
Auger electron |
|
1.22008e-04 |
3.159e-01 |
Auger electron |
|
2.83409e-04 |
5.723e-02 |
Auger electron |
|
4.22547e-04 |
7.075e-01 |
Auger electron |
|
5.04944e-04 |
2.142e-02 |
Auger electron |
|
2.96515e-03 |
2.785e-01 |
Auger electron |
|
3.51997e-03 |
7.537e-02 |
Auger electron |
|
2.17904e-02 |
3.209e-02 |
Auger electron |
|
2.54497e-02 |
1.390e-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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