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Radionuclide Dosimetric Data Sheets
Lutetium-172m
Summary data
General
Classification
Isotope: Lu-172m
Atomic number (Z): 71
Mass number (A): 172
Neutron number (N): 101
Radioactive decay
Decay modes: Internal transition
Half-life: 3.7 [m]
Decay constant: 3.1223e-03 [1/s]
Daughters: Lu-172 (100.0%)
Radioactive daughters: Lu-172
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.04038 [MeV]
Mean photon energy: 0.00151 [MeV]
Air kerma rate constant, Γ10: 2.223e-19 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 2.223e-19 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 6.470e-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-:
6.470e-15 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 2.419e-16
[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-172m 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-172m 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-172m Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.39930e-05 |
8.461e+00 |
X-ray |
|
1.56788e-03 |
2.325e-02 |
X-ray |
|
7.59238e-03 |
1.216e-02 |
X-ray |
|
7.64542e-03 |
1.074e-01 |
X-ray |
|
9.04387e-03 |
1.848e-02 |
X-ray |
|
1.01341e-05 |
7.332e-01 |
Auger electron |
|
2.16364e-05 |
1.047e+00 |
Auger electron |
|
1.56344e-04 |
3.024e+00 |
Auger electron |
|
2.55799e-04 |
5.478e-01 |
Auger electron |
|
2.64654e-04 |
8.892e-02 |
Auger electron |
|
4.75821e-04 |
1.251e-01 |
Auger electron |
|
1.30666e-03 |
1.274e+00 |
Auger electron |
|
1.48060e-03 |
6.167e-02 |
Auger electron |
|
5.77325e-03 |
3.972e-01 |
Auger electron |
|
7.31546e-03 |
1.441e-01 |
Auger electron |
|
8.88507e-03 |
1.330e-02 |
Auger electron |
|
3.10150e-02 |
1.675e-01 |
Conversion electron |
|
3.14870e-02 |
1.688e-02 |
Conversion electron |
|
3.26168e-02 |
5.407e-01 |
Conversion electron |
|
3.98439e-02 |
2.146e-01 |
Conversion electron |
|
4.18600e-02 |
6.030e-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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