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Radionuclide Dosimetric Data Sheets
Lutetium-178
Summary data
General
Classification
Isotope: Lu-178
Atomic number (Z): 71
Mass number (A): 178
Neutron number (N): 107
Radioactive decay
Decay modes: β-
Half-life: 28.4 [m]
Decay constant: 4.0678e-04 [1/s]
Daughters: Hf-178 (100.0%)
Radioactive daughters: None
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.75607 [MeV]
Mean photon energy: 0.12561 [MeV]
Air kerma rate constant, Γ10: 4.447e-18 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 4.447e-18 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 1.211e-13 [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-:
1.211e-13 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 2.012e-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-178 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-178 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-178 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-178 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.94344e-05 |
2.379e+00 |
X-ray |
|
7.88959e-03 |
2.328e-02 |
X-ray |
|
9.03751e-03 |
2.306e-02 |
X-ray |
|
5.47191e-02 |
1.899e-02 |
X-ray |
|
5.59237e-02 |
3.323e-02 |
X-ray |
|
9.31790e-02 |
6.000e-02 |
Gamma |
|
1.30990e+00 |
1.404e-02 |
Gamma |
|
1.34080e+00 |
3.222e-02 |
Gamma |
|
1.85775e-01 |
1.096e-02 |
Beta |
|
2.07981e-01 |
3.188e-02 |
Beta |
|
2.53635e-01 |
1.096e-02 |
Beta |
|
7.53084e-01 |
2.889e-01 |
Beta |
|
7.93525e-01 |
6.276e-01 |
Beta |
|
1.07083e-05 |
2.065e-01 |
Auger electron |
|
2.44604e-05 |
2.930e-01 |
Auger electron |
|
1.60026e-04 |
8.301e-01 |
Auger electron |
|
2.81600e-04 |
2.616e-02 |
Auger electron |
|
3.03913e-04 |
1.417e-01 |
Auger electron |
|
7.73290e-04 |
2.156e-02 |
Auger electron |
|
1.36698e-03 |
3.613e-01 |
Auger electron |
|
1.54679e-03 |
1.910e-02 |
Auger electron |
|
6.21392e-03 |
1.177e-01 |
Auger electron |
|
7.83423e-03 |
4.374e-02 |
Auger electron |
|
2.76970e-02 |
6.579e-02 |
Conversion electron |
|
8.24160e-02 |
8.255e-02 |
Conversion electron |
|
8.36207e-02 |
7.769e-02 |
Conversion electron |
|
9.10800e-02 |
4.180e-02 |
Conversion electron |
|
9.31790e-02 |
1.133e-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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