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Radionuclide Dosimetric Data Sheets
Ytterbium-177
Summary data
General
Classification
Isotope: Yb-177
Atomic number (Z): 70
Mass number (A): 177
Neutron number (N): 107
Radioactive decay
Decay modes: β-
Half-life: 1.911 [h]
Decay constant: 1.0075e-04 [1/s]
Daughters: Lu-177 (100.0%)
Radioactive daughters: Lu-177
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.43576 [MeV]
Mean photon energy: 0.19518 [MeV]
Air kerma rate constant, Γ10: 6.902e-18 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 6.902e-18 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 6.982e-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-:
6.982e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 3.127e-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/Yb-177 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/Yb-177 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/Yb-177 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/Yb-177 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.40226e-05 |
1.730e+00 |
X-ray |
|
7.64540e-03 |
1.770e-02 |
X-ray |
|
8.72221e-03 |
1.146e-02 |
X-ray |
|
5.30692e-02 |
4.275e-02 |
X-ray |
|
5.41988e-02 |
7.507e-02 |
X-ray |
|
6.14258e-02 |
1.537e-02 |
X-ray |
|
1.22700e-01 |
3.416e-02 |
Gamma |
|
1.39300e-01 |
1.344e-02 |
Gamma |
|
1.50600e-01 |
2.027e-01 |
Gamma |
|
1.08020e+00 |
5.600e-02 |
Gamma |
|
1.24120e+00 |
3.472e-02 |
Gamma |
|
4.18508e-02 |
3.909e-02 |
Beta |
|
4.49057e-02 |
7.217e-02 |
Beta |
|
6.87473e-02 |
1.303e-02 |
Beta |
|
3.78179e-01 |
2.005e-02 |
Beta |
|
4.34141e-01 |
2.105e-01 |
Beta |
|
4.45891e-01 |
8.018e-02 |
Beta |
|
4.96008e-01 |
5.513e-01 |
Beta |
|
9.95014e-06 |
1.501e-01 |
Auger electron |
|
2.16357e-05 |
2.129e-01 |
Auger electron |
|
1.56536e-04 |
6.175e-01 |
Auger electron |
|
2.64106e-04 |
1.863e-02 |
Auger electron |
|
2.66230e-04 |
1.098e-01 |
Auger electron |
|
5.83933e-04 |
2.468e-02 |
Auger electron |
|
1.30987e-03 |
2.606e-01 |
Auger electron |
|
1.48430e-03 |
1.253e-02 |
Auger electron |
|
5.97178e-03 |
8.557e-02 |
Auger electron |
|
7.52554e-03 |
3.125e-02 |
Auger electron |
|
5.92580e-02 |
5.166e-02 |
Conversion electron |
|
7.58580e-02 |
1.582e-02 |
Conversion electron |
|
8.71580e-02 |
8.584e-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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