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Radionuclide Dosimetric Data Sheets
Terbium-152
Summary data
General
Classification
Isotope: Tb-152
Atomic number (Z): 65
Mass number (A): 152
Neutron number (N): 87
Radioactive decay
Decay modes: β+, Electron capture
Half-life: 17.5 [h]
Decay constant: 1.1002e-05 [1/s]
Daughters: Gd-152 (100.0%)
Radioactive daughters: Gd-152
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.25033 [MeV]
Mean photon energy: 1.49324 [MeV]
Air kerma rate constant, Γ10: 4.420e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 5.178e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 4.011e-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-:
4.011e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 2.392e-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/Tb-152 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/Tb-152 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/Tb-152 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/Tb-152 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.94297e-05 |
7.794e+00 |
X-ray |
|
1.09481e-03 |
1.187e-02 |
X-ray |
|
6.04290e-03 |
5.458e-02 |
X-ray |
|
6.71540e-03 |
3.530e-02 |
X-ray |
|
4.23559e-02 |
1.937e-01 |
X-ray |
|
4.30603e-02 |
3.483e-01 |
X-ray |
|
4.86161e-02 |
3.539e-02 |
X-ray |
|
4.87612e-02 |
6.846e-02 |
X-ray |
|
5.00239e-02 |
1.510e-02 |
X-ray |
|
2.71080e-01 |
8.580e-02 |
Gamma |
|
3.44280e-01 |
6.500e-01 |
Gamma |
|
4.11080e-01 |
4.095e-02 |
Gamma |
|
5.11000e-01 |
3.916e-01 |
Annihilation photon |
|
5.86290e-01 |
9.425e-02 |
Gamma |
|
7.03340e-01 |
1.690e-02 |
Gamma |
|
7.64880e-01 |
2.925e-02 |
Gamma |
|
7.78860e-01 |
5.785e-02 |
Gamma |
|
9.30700e-01 |
1.820e-02 |
Gamma |
|
9.74100e-01 |
3.120e-02 |
Gamma |
|
1.08990e+00 |
1.001e-02 |
Gamma |
|
1.10920e+00 |
2.665e-02 |
Gamma |
|
1.26140e+00 |
1.079e-02 |
Gamma |
|
1.29911e+00 |
2.145e-02 |
Gamma |
|
1.31470e+00 |
1.430e-02 |
Gamma |
|
1.90240e+00 |
1.904e-02 |
Gamma |
|
2.40500e+00 |
1.489e-02 |
Gamma |
|
9.18213e-01 |
2.295e-02 |
Positron |
|
1.18447e+00 |
5.987e-02 |
Positron |
|
1.33602e+00 |
6.984e-02 |
Positron |
|
1.68638e-05 |
5.238e-01 |
Auger electron |
|
1.13378e-04 |
3.507e+00 |
Auger electron |
|
1.23684e-04 |
2.884e-01 |
Auger electron |
|
1.82314e-04 |
5.481e-01 |
Auger electron |
|
5.72866e-04 |
1.112e-01 |
Auger electron |
|
8.97981e-04 |
1.181e+00 |
Auger electron |
|
1.07589e-03 |
8.016e-02 |
Auger electron |
|
4.77265e-03 |
4.340e-01 |
Auger electron |
|
5.92880e-03 |
1.522e-01 |
Auger electron |
|
7.11966e-03 |
1.322e-02 |
Auger electron |
|
3.47386e-02 |
3.022e-02 |
Auger electron |
|
4.11460e-02 |
1.496e-02 |
Auger electron |
|
2.93977e-01 |
2.021e-02 |
Conversion electron |
|
5.65297e-01 |
1.094e-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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