<= Return to MIRDspec isotope database
Radionuclide Dosimetric Data Sheets
Terbium-150
Summary data
General
Classification
Isotope: Tb-150
Atomic number (Z): 65
Mass number (A): 150
Neutron number (N): 85
Radioactive decay
Decay modes: α, β+, Electron capture
Half-life: 3.48 [h]
Decay constant: 5.5328e-05 [1/s]
Daughters: Gd-150 (100.0%), Eu-146 (0.0007%)
Radioactive daughters: Gd-150, Eu-146
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.28896 [MeV]
Mean photon energy: 2.44026 [MeV]
Air kerma rate constant, Γ10: 7.189e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 8.037e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 4.630e-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-:
4.630e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 3.910e-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-150 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-150 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-150 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-150 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.94300e-05 |
7.115e+00 |
X-ray |
|
1.09485e-03 |
1.083e-02 |
X-ray |
|
6.04290e-03 |
4.976e-02 |
X-ray |
|
6.71540e-03 |
3.209e-02 |
X-ray |
|
4.23559e-02 |
1.769e-01 |
X-ray |
|
4.30603e-02 |
3.181e-01 |
X-ray |
|
4.86161e-02 |
3.233e-02 |
X-ray |
|
4.87612e-02 |
6.253e-02 |
X-ray |
|
5.00239e-02 |
1.379e-02 |
X-ray |
|
4.96242e-01 |
1.462e-01 |
Gamma |
|
5.11000e-01 |
4.382e-01 |
Annihilation photon |
|
5.65640e-01 |
1.123e-02 |
Gamma |
|
5.69083e-01 |
2.498e-02 |
Gamma |
|
6.38050e-01 |
7.200e-01 |
Gamma |
|
6.50360e-01 |
4.032e-02 |
Gamma |
|
7.92385e-01 |
4.392e-02 |
Gamma |
|
8.21067e-01 |
1.404e-02 |
Gamma |
|
8.80270e-01 |
2.952e-02 |
Gamma |
|
9.54460e-01 |
1.195e-02 |
Gamma |
|
1.04560e+00 |
1.282e-02 |
Gamma |
|
1.29166e+00 |
1.642e-02 |
Gamma |
|
1.43046e+00 |
2.448e-02 |
Gamma |
|
1.45355e+00 |
3.888e-02 |
Gamma |
|
1.51834e+00 |
2.736e-02 |
Gamma |
|
1.59251e+00 |
1.966e-02 |
Gamma |
|
1.78891e+00 |
1.930e-02 |
Gamma |
|
2.01630e+00 |
1.073e-02 |
Gamma |
|
2.09156e+00 |
1.865e-02 |
Gamma |
|
2.14844e+00 |
1.174e-02 |
Gamma |
|
2.20758e+00 |
1.310e-02 |
Gamma |
|
2.36493e+00 |
1.174e-02 |
Gamma |
|
2.42598e+00 |
1.224e-02 |
Gamma |
|
3.38360e+00 |
5.760e-02 |
Gamma |
|
1.35657e+00 |
8.965e-02 |
Positron |
|
1.63580e+00 |
5.977e-02 |
Positron |
|
1.68638e-05 |
4.783e-01 |
Auger electron |
|
1.13376e-04 |
3.201e+00 |
Auger electron |
|
1.23727e-04 |
2.632e-01 |
Auger electron |
|
1.82297e-04 |
5.008e-01 |
Auger electron |
|
5.73485e-04 |
1.024e-01 |
Auger electron |
|
8.98011e-04 |
1.077e+00 |
Auger electron |
|
1.07597e-03 |
7.314e-02 |
Auger electron |
|
4.77316e-03 |
3.959e-01 |
Auger electron |
|
5.92940e-03 |
1.389e-01 |
Auger electron |
|
7.12041e-03 |
1.206e-02 |
Auger electron |
|
3.47386e-02 |
2.760e-02 |
Auger electron |
|
4.11460e-02 |
1.367e-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)
<= Return to MIRDspec isotope database
