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Radionuclide Dosimetric Data Sheets
Lutetium-176m
Summary data
General
Classification
Isotope: Lu-176m
Atomic number (Z): 71
Mass number (A): 176
Neutron number (N): 105
Radioactive decay
Decay modes: β-, Electron capture
Half-life: 3.635 [h]
Decay constant: 5.2969e-05 [1/s]
Daughters: Hf-176 (99.9%), Yb-176 (0.095%)
Radioactive daughters: None
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.47825 [MeV]
Mean photon energy: 0.01461 [MeV]
Air kerma rate constant, Γ10: 9.153e-19 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 9.153e-19 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 7.662e-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-:
7.662e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 2.341e-15
[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-176m 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-176m 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-176m 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-176m Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
8.62751e-06 |
1.336e-02 |
X-ray |
|
1.94354e-05 |
4.233e+00 |
X-ray |
|
1.63953e-03 |
1.284e-02 |
X-ray |
|
7.88959e-03 |
4.123e-02 |
X-ray |
|
9.03751e-03 |
4.147e-02 |
X-ray |
|
5.47191e-02 |
2.847e-02 |
X-ray |
|
5.59237e-02 |
4.982e-02 |
X-ray |
|
6.33831e-02 |
1.025e-02 |
X-ray |
|
8.83610e-02 |
8.894e-02 |
Gamma |
|
4.25122e-01 |
6.094e-01 |
Beta |
|
4.61158e-01 |
3.896e-01 |
Beta |
|
1.07034e-05 |
3.674e-01 |
Auger electron |
|
2.44604e-05 |
5.212e-01 |
Auger electron |
|
1.60037e-04 |
1.477e+00 |
Auger electron |
|
2.81550e-04 |
4.656e-02 |
Auger electron |
|
3.04019e-04 |
2.525e-01 |
Auger electron |
|
7.87571e-04 |
3.703e-02 |
Auger electron |
|
1.36715e-03 |
6.426e-01 |
Auger electron |
|
1.54709e-03 |
3.399e-02 |
Auger electron |
|
6.21619e-03 |
2.094e-01 |
Auger electron |
|
7.83650e-03 |
7.781e-02 |
Auger electron |
|
2.28790e-02 |
1.035e-01 |
Conversion electron |
|
7.71160e-02 |
1.103e-02 |
Conversion electron |
|
7.75980e-02 |
1.566e-01 |
Conversion electron |
|
7.88027e-02 |
1.498e-01 |
Conversion electron |
|
8.62620e-02 |
7.948e-02 |
Conversion electron |
|
8.83610e-02 |
2.153e-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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