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Radionuclide Dosimetric Data Sheets
Lutetium-173
Summary data
General
Classification
Isotope: Lu-173
Atomic number (Z): 71
Mass number (A): 173
Neutron number (N): 102
Radioactive decay
Decay modes: Electron capture
Half-life: 1.37 [y]
Decay constant: 1.6033e-08 [1/s]
Daughters: Yb-173 (100.0%)
Radioactive daughters: None
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.05259 [MeV]
Mean photon energy: 0.18342 [MeV]
Air kerma rate constant, Γ10: 7.533e-18 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 7.533e-18 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 8.426e-15 [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-:
8.426e-15 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 2.939e-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/Lu-173 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-173 Summary 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-173 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
8.63377e-06 |
1.918e+01 |
X-ray |
|
1.50151e-03 |
4.730e-02 |
X-ray |
|
6.56570e-03 |
1.256e-02 |
X-ray |
|
7.35570e-03 |
2.006e-02 |
X-ray |
|
7.40530e-03 |
1.770e-01 |
X-ray |
|
8.41451e-03 |
1.127e-01 |
X-ray |
|
8.74938e-03 |
3.022e-02 |
X-ray |
|
9.79888e-03 |
2.008e-02 |
X-ray |
|
5.14483e-02 |
4.429e-01 |
X-ray |
|
5.25072e-02 |
7.805e-01 |
X-ray |
|
5.92804e-02 |
8.226e-02 |
X-ray |
|
5.95058e-02 |
1.589e-01 |
X-ray |
|
6.10550e-02 |
1.830e-02 |
X-ray |
|
6.11060e-02 |
3.539e-02 |
X-ray |
|
7.86300e-02 |
1.187e-01 |
Gamma |
|
1.00724e-01 |
5.236e-02 |
Gamma |
|
1.71393e-01 |
2.904e-02 |
Gamma |
|
1.79365e-01 |
1.376e-02 |
Gamma |
|
2.72105e-01 |
2.120e-01 |
Gamma |
|
6.36110e-01 |
1.452e-02 |
Gamma |
|
9.42952e-06 |
1.677e+00 |
Auger electron |
|
1.88617e-05 |
2.378e+00 |
Auger electron |
|
1.54785e-04 |
6.936e+00 |
Auger electron |
|
2.46730e-04 |
2.101e-01 |
Auger electron |
|
2.61241e-04 |
1.214e+00 |
Auger electron |
|
7.29002e-04 |
1.827e-02 |
Conversion electron |
|
8.86338e-04 |
1.943e-01 |
Auger electron |
|
1.25656e-03 |
2.804e+00 |
Auger electron |
|
1.42921e-03 |
1.265e-01 |
Auger electron |
|
5.80912e-03 |
9.233e-01 |
Auger electron |
|
7.30141e-03 |
3.328e-01 |
Auger electron |
|
8.82424e-03 |
3.053e-02 |
Auger electron |
|
1.71890e-02 |
6.715e-01 |
Conversion electron |
|
3.92830e-02 |
1.463e-01 |
Conversion electron |
|
4.19611e-02 |
5.345e-02 |
Auger electron |
|
4.99512e-02 |
2.732e-02 |
Auger electron |
|
6.81760e-02 |
9.339e-02 |
Conversion electron |
|
6.86374e-02 |
2.265e-02 |
Conversion electron |
|
6.96962e-02 |
1.579e-02 |
Conversion electron |
|
7.66948e-02 |
3.028e-02 |
Conversion electron |
|
9.02700e-02 |
2.029e-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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