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Radionuclide Dosimetric Data Sheets
Thulium-162
Summary data
General
Classification
Isotope: Tm-162
Atomic number (Z): 69
Mass number (A): 162
Neutron number (N): 93
Radioactive decay
Decay modes: β+, Electron capture
Half-life: 21.7 [m]
Decay constant: 5.3237e-04 [1/s]
Daughters: Er-162 (100.0%)
Radioactive daughters: None
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.56475 [MeV]
Mean photon energy: 1.91552 [MeV]
Air kerma rate constant, Γ10: 4.998e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 6.377e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 9.048e-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-:
9.048e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 3.069e-13
[Gy·kg/Bq·s]
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-162 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-162 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-162 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.35459e-05 |
8.973e+00 |
X-ray |
|
1.36749e-03 |
2.158e-02 |
X-ray |
|
6.93540e-03 |
8.325e-02 |
X-ray |
|
7.81980e-03 |
6.404e-02 |
X-ray |
|
8.17512e-03 |
1.416e-02 |
X-ray |
|
9.09455e-03 |
1.132e-02 |
X-ray |
|
4.82994e-02 |
1.969e-01 |
X-ray |
|
4.92265e-02 |
3.495e-01 |
X-ray |
|
5.55821e-02 |
3.640e-02 |
X-ray |
|
5.57778e-02 |
7.035e-02 |
X-ray |
|
5.72611e-02 |
1.559e-02 |
X-ray |
|
1.02000e-01 |
1.747e-01 |
Gamma |
|
2.27520e-01 |
7.100e-02 |
Gamma |
|
5.11000e-01 |
7.122e-01 |
Annihilation photon |
|
5.70740e-01 |
1.945e-02 |
Gamma |
|
6.72330e-01 |
5.538e-02 |
Gamma |
|
6.72400e-01 |
1.839e-02 |
Gamma |
|
7.98680e-01 |
8.378e-02 |
Gamma |
|
8.99900e-01 |
5.609e-02 |
Gamma |
|
9.00700e-01 |
6.461e-02 |
Gamma |
|
9.85120e-01 |
1.150e-02 |
Gamma |
|
1.06901e+00 |
1.100e-02 |
Gamma |
|
1.10000e+00 |
1.370e-02 |
Gamma |
|
1.25001e+00 |
4.814e-02 |
Gamma |
|
1.25472e+00 |
1.456e-02 |
Gamma |
|
1.31842e+00 |
5.538e-02 |
Gamma |
|
1.35220e+00 |
3.422e-02 |
Gamma |
|
1.40423e+00 |
2.840e-02 |
Gamma |
|
1.50640e+00 |
1.384e-02 |
Gamma |
|
1.97472e+00 |
1.221e-02 |
Gamma |
|
2.01575e+00 |
1.122e-02 |
Gamma |
|
2.14020e+00 |
1.257e-02 |
Gamma |
|
1.01379e+00 |
2.323e-02 |
Positron |
|
1.04383e+00 |
1.212e-02 |
Positron |
|
1.08269e+00 |
1.515e-02 |
Positron |
|
1.11363e+00 |
1.919e-02 |
Positron |
|
1.31923e+00 |
2.727e-02 |
Positron |
|
1.68703e+00 |
9.092e-02 |
Positron |
|
1.73435e+00 |
1.111e-01 |
Positron |
|
1.98170e-05 |
4.350e-01 |
Auger electron |
|
1.41540e-04 |
4.039e+00 |
Auger electron |
|
2.00100e-04 |
1.432e-01 |
Auger electron |
|
2.35406e-04 |
6.852e-01 |
Auger electron |
|
7.39219e-04 |
1.210e-01 |
Auger electron |
|
1.13420e-03 |
1.505e+00 |
Auger electron |
|
1.30973e-03 |
7.474e-02 |
Auger electron |
|
5.47877e-03 |
5.233e-01 |
Auger electron |
|
6.85424e-03 |
1.865e-01 |
Auger electron |
|
8.26190e-03 |
1.681e-02 |
Auger electron |
|
3.94671e-02 |
2.597e-02 |
Auger electron |
|
4.44260e-02 |
1.784e-01 |
Conversion electron |
|
4.69039e-02 |
1.314e-02 |
Auger electron |
|
9.22838e-02 |
1.686e-02 |
Conversion electron |
|
9.27252e-02 |
1.101e-01 |
Conversion electron |
|
9.36526e-02 |
1.061e-01 |
Conversion electron |
|
1.00204e-01 |
5.679e-02 |
Conversion electron |
|
1.02000e-01 |
1.500e-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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