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Radionuclide Dosimetric Data Sheets
Thulium-165
Summary data
General
Classification
Isotope: Tm-165
Atomic number (Z): 69
Mass number (A): 165
Neutron number (N): 96
Radioactive decay
Decay modes: β+, Electron capture
Half-life: 30.06 [h]
Decay constant: 6.4052e-06 [1/s]
Daughters: Er-165 (100.0%)
Radioactive daughters: Er-165
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.06371 [MeV]
Mean photon energy: 0.56246 [MeV]
Air kerma rate constant, Γ10: 2.133e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 2.133e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 1.021e-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-:
1.021e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 9.012e-14
[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/Tm-165 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/Tm-165 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/Tm-165 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/Tm-165 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.35805e-05 |
1.366e+01 |
X-ray |
|
1.36941e-03 |
3.175e-02 |
X-ray |
|
6.89240e-03 |
1.316e-02 |
X-ray |
|
6.93540e-03 |
1.162e-01 |
X-ray |
|
7.72441e-03 |
1.142e-02 |
X-ray |
|
7.81980e-03 |
8.326e-02 |
X-ray |
|
7.92000e-03 |
1.554e-02 |
X-ray |
|
8.17513e-03 |
1.977e-02 |
X-ray |
|
9.09455e-03 |
1.472e-02 |
X-ray |
|
4.71550e-02 |
1.686e-01 |
Gamma |
|
4.82994e-02 |
2.902e-01 |
X-ray |
|
4.92265e-02 |
5.150e-01 |
X-ray |
|
5.44150e-02 |
7.207e-02 |
Gamma |
|
5.55821e-02 |
5.365e-02 |
X-ray |
|
5.57777e-02 |
1.037e-01 |
X-ray |
|
5.72170e-02 |
1.188e-02 |
X-ray |
|
5.72611e-02 |
2.298e-02 |
X-ray |
|
1.13599e-01 |
1.562e-02 |
Gamma |
|
2.18859e-01 |
3.337e-02 |
Gamma |
|
2.42917e-01 |
3.550e-01 |
Gamma |
|
2.92410e-01 |
1.271e-02 |
Gamma |
|
2.96119e-01 |
3.877e-02 |
Gamma |
|
2.97369e-01 |
1.271e-01 |
Gamma |
|
3.46933e-01 |
2.875e-02 |
Gamma |
|
3.56519e-01 |
2.751e-02 |
Gamma |
|
3.89404e-01 |
2.819e-02 |
Gamma |
|
4.48580e-01 |
1.629e-02 |
Gamma |
|
4.56459e-01 |
1.250e-02 |
Gamma |
|
4.60263e-01 |
4.118e-02 |
Gamma |
|
4.87399e-01 |
1.044e-02 |
Gamma |
|
5.42622e-01 |
1.434e-02 |
Gamma |
|
5.64183e-01 |
2.307e-02 |
Gamma |
|
5.89912e-01 |
1.821e-02 |
Gamma |
|
6.98843e-01 |
1.285e-02 |
Gamma |
|
8.06372e-01 |
9.514e-02 |
Gamma |
|
1.13126e+00 |
1.725e-02 |
Gamma |
|
1.18445e+00 |
2.947e-02 |
Gamma |
|
1.98170e-05 |
6.772e-01 |
Auger electron |
|
1.41414e-04 |
6.159e+00 |
Auger electron |
|
2.04478e-04 |
2.224e-01 |
Auger electron |
|
2.36034e-04 |
1.085e+00 |
Auger electron |
|
7.61412e-04 |
2.926e-01 |
Auger electron |
|
1.13590e-03 |
2.212e+00 |
Auger electron |
|
1.31503e-03 |
1.106e-01 |
Auger electron |
|
2.82500e-03 |
7.532e-02 |
Conversion electron |
|
5.52339e-03 |
7.723e-01 |
Auger electron |
|
6.90570e-03 |
2.760e-01 |
Auger electron |
|
8.32256e-03 |
2.493e-02 |
Auger electron |
|
1.30360e-02 |
1.425e-02 |
Conversion electron |
|
1.96790e-02 |
1.782e-02 |
Conversion electron |
|
3.74388e-02 |
3.981e-02 |
Conversion electron |
|
3.78802e-02 |
1.269e-02 |
Conversion electron |
|
3.88076e-02 |
2.051e-02 |
Conversion electron |
|
3.94671e-02 |
3.828e-02 |
Auger electron |
|
4.34658e-02 |
1.171e-02 |
Conversion electron |
|
4.46988e-02 |
1.422e-01 |
Conversion electron |
|
4.51402e-02 |
1.668e-02 |
Conversion electron |
|
4.53588e-02 |
1.684e-02 |
Conversion electron |
|
4.69039e-02 |
1.937e-02 |
Auger electron |
|
5.06828e-02 |
1.033e-02 |
Conversion electron |
|
5.26188e-02 |
3.703e-02 |
Conversion electron |
|
5.44150e-02 |
1.042e-02 |
Conversion electron |
|
5.60250e-02 |
2.671e-02 |
Conversion electron |
|
6.79782e-02 |
1.351e-02 |
Conversion electron |
|
6.89056e-02 |
1.401e-02 |
Conversion electron |
|
1.85343e-01 |
7.286e-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)
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