<= Return to MIRDspec isotope database
Radionuclide Dosimetric Data Sheets
Lutetium-171
Summary data
General
Classification
Isotope: Lu-171
Atomic number (Z): 71
Mass number (A): 171
Neutron number (N): 100
Radioactive decay
Decay modes: β+, Electron capture
Half-life: 8.24 [d]
Decay constant: 9.7361e-07 [1/s]
Daughters: Yb-171 (100.0%)
Radioactive daughters: None
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.09278 [MeV]
Mean photon energy: 0.65032 [MeV]
Air kerma rate constant, Γ10: 2.684e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 2.684e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 1.487e-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-:
1.487e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 1.042e-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/Lu-171 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/Lu-171 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/Lu-171 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/Lu-171 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
8.63234e-06 |
3.001e+01 |
X-ray |
|
1.50374e-03 |
7.292e-02 |
X-ray |
|
6.56570e-03 |
1.830e-02 |
X-ray |
|
7.35569e-03 |
2.922e-02 |
X-ray |
|
7.40529e-03 |
2.579e-01 |
X-ray |
|
8.41451e-03 |
1.759e-01 |
X-ray |
|
8.51880e-03 |
1.322e-02 |
X-ray |
|
8.74936e-03 |
4.403e-02 |
X-ray |
|
9.79888e-03 |
3.134e-02 |
X-ray |
|
1.93940e-02 |
1.375e-01 |
Gamma |
|
5.14483e-02 |
3.550e-01 |
X-ray |
|
5.25072e-02 |
6.257e-01 |
X-ray |
|
5.56890e-02 |
1.221e-02 |
Gamma |
|
5.92804e-02 |
6.594e-02 |
X-ray |
|
5.95058e-02 |
1.274e-01 |
X-ray |
|
6.10550e-02 |
1.467e-02 |
X-ray |
|
6.11060e-02 |
2.837e-02 |
X-ray |
|
6.67310e-02 |
2.476e-02 |
Gamma |
|
7.23800e-02 |
1.997e-02 |
Gamma |
|
7.58890e-02 |
6.093e-02 |
Gamma |
|
8.56020e-02 |
1.083e-02 |
Gamma |
|
6.67422e-01 |
1.106e-01 |
Gamma |
|
6.89286e-01 |
2.371e-02 |
Gamma |
|
7.12670e-01 |
1.135e-02 |
Gamma |
|
7.39793e-01 |
4.790e-01 |
Gamma |
|
7.80711e-01 |
4.368e-02 |
Gamma |
|
8.39961e-01 |
3.046e-02 |
Gamma |
|
8.53091e-01 |
2.553e-02 |
Gamma |
|
9.44641e-06 |
2.646e+00 |
Auger electron |
|
1.88620e-05 |
3.739e+00 |
Auger electron |
|
1.54697e-04 |
1.085e+01 |
Auger electron |
|
2.15201e-04 |
6.862e-02 |
Conversion electron |
|
2.49007e-04 |
3.342e-01 |
Auger electron |
|
2.64416e-04 |
2.022e+00 |
Auger electron |
|
8.80566e-04 |
2.800e-01 |
Auger electron |
|
1.25929e-03 |
4.314e+00 |
Auger electron |
|
1.43655e-03 |
1.964e-01 |
Auger electron |
|
1.62685e-03 |
1.308e-02 |
Auger electron |
|
5.29001e-03 |
1.709e-01 |
Conversion electron |
|
5.81693e-03 |
1.365e+00 |
Auger electron |
|
7.21380e-03 |
1.763e-01 |
Conversion electron |
|
7.30932e-03 |
4.922e-01 |
Auger electron |
|
8.83226e-03 |
4.515e-02 |
Auger electron |
|
8.94000e-03 |
1.603e-01 |
Conversion electron |
|
9.14900e-03 |
4.939e-02 |
Conversion electron |
|
9.40140e-03 |
1.764e-01 |
Conversion electron |
|
1.04602e-02 |
2.651e-01 |
Conversion electron |
|
1.09390e-02 |
1.401e-01 |
Conversion electron |
|
1.44480e-02 |
9.642e-02 |
Conversion electron |
|
1.74588e-02 |
1.407e-01 |
Conversion electron |
|
1.93940e-02 |
3.577e-02 |
Conversion electron |
|
2.41610e-02 |
4.786e-02 |
Conversion electron |
|
2.99670e-02 |
1.623e-02 |
Conversion electron |
|
4.19611e-02 |
4.285e-02 |
Auger electron |
|
4.52350e-02 |
2.724e-02 |
Conversion electron |
|
4.78480e-02 |
1.322e-02 |
Conversion electron |
|
4.99512e-02 |
2.190e-02 |
Auger electron |
|
5.62770e-02 |
2.380e-02 |
Conversion electron |
|
5.67384e-02 |
4.625e-02 |
Conversion electron |
|
5.77972e-02 |
4.713e-02 |
Conversion electron |
|
6.19260e-02 |
1.948e-02 |
Conversion electron |
|
6.47958e-02 |
2.846e-02 |
Conversion electron |
|
6.54350e-02 |
1.039e-02 |
Conversion electron |
|
6.58964e-02 |
1.830e-01 |
Conversion electron |
|
6.69552e-02 |
1.874e-01 |
Conversion electron |
|
7.39538e-02 |
9.437e-02 |
Conversion electron |
|
7.58890e-02 |
2.489e-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)
<= Return to MIRDspec isotope database
