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Radionuclide Dosimetric Data Sheets
Ytterbium-165
Summary data
General
Classification
Isotope: Yb-165
Atomic number (Z): 70
Mass number (A): 165
Neutron number (N): 95
Radioactive decay
Decay modes: β+, Electron capture
Half-life: 9.9 [m]
Decay constant: 1.1669e-03 [1/s]
Daughters: Tm-165 (100.0%)
Radioactive daughters: Tm-165
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.15178 [MeV]
Mean photon energy: 0.33904 [MeV]
Air kerma rate constant, Γ10: 1.004e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 1.277e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 2.432e-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-:
2.432e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 5.432e-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-165 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-165 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-165 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-165 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.34131e-05 |
2.654e+01 |
X-ray |
|
1.43499e-03 |
7.154e-02 |
X-ray |
|
6.36071e-03 |
1.947e-02 |
X-ray |
|
7.12210e-03 |
3.045e-02 |
X-ray |
|
7.16830e-03 |
2.689e-01 |
X-ray |
|
8.11341e-03 |
2.058e-01 |
X-ray |
|
8.21590e-03 |
1.080e-02 |
X-ray |
|
8.45977e-03 |
4.580e-02 |
X-ray |
|
9.44244e-03 |
3.655e-02 |
X-ray |
|
3.08000e-02 |
1.062e-02 |
Gamma |
|
4.98586e-02 |
3.821e-01 |
X-ray |
|
5.08500e-02 |
6.754e-01 |
X-ray |
|
5.74128e-02 |
7.078e-02 |
X-ray |
|
5.76229e-02 |
1.368e-01 |
X-ray |
|
5.91167e-02 |
1.571e-02 |
X-ray |
|
5.91642e-02 |
3.039e-02 |
X-ray |
|
6.88600e-02 |
6.318e-02 |
Gamma |
|
8.01100e-02 |
3.366e-01 |
Gamma |
|
1.18060e-01 |
1.656e-02 |
Gamma |
|
5.11000e-01 |
1.409e-01 |
Annihilation photon |
|
1.09028e+00 |
3.051e-02 |
Gamma |
|
6.62493e-01 |
7.036e-02 |
Positron |
|
2.06752e-05 |
1.213e+00 |
Auger electron |
|
1.48057e-04 |
1.181e+01 |
Auger electron |
|
2.22816e-04 |
3.773e-01 |
Auger electron |
|
2.48766e-04 |
2.034e+00 |
Auger electron |
|
8.12362e-04 |
2.962e-01 |
Auger electron |
|
1.19500e-03 |
4.590e+00 |
Auger electron |
|
1.36946e-03 |
2.176e-01 |
Auger electron |
|
1.51900e-03 |
3.183e-02 |
Conversion electron |
|
1.55904e-03 |
1.332e-02 |
Auger electron |
|
1.97060e-03 |
3.120e-01 |
Conversion electron |
|
2.96190e-03 |
4.318e-01 |
Conversion electron |
|
5.64532e-03 |
1.555e+00 |
Auger electron |
|
7.07780e-03 |
5.576e-01 |
Auger electron |
|
8.54128e-03 |
5.066e-02 |
Auger electron |
|
9.37200e-03 |
1.145e-01 |
Conversion electron |
|
9.73490e-03 |
1.841e-01 |
Conversion electron |
|
1.16000e-02 |
4.807e-02 |
Conversion electron |
|
2.06220e-02 |
4.719e-01 |
Conversion electron |
|
4.07026e-02 |
4.815e-02 |
Auger electron |
|
4.84128e-02 |
2.449e-02 |
Auger electron |
|
5.85720e-02 |
2.772e-02 |
Conversion electron |
|
5.87790e-02 |
1.299e-02 |
Conversion electron |
|
5.92306e-02 |
2.732e-01 |
Conversion electron |
|
6.02219e-02 |
2.905e-01 |
Conversion electron |
|
6.69949e-02 |
1.415e-01 |
Conversion electron |
|
6.88600e-02 |
3.723e-02 |
Conversion electron |
|
7.00290e-02 |
9.271e-02 |
Conversion electron |
|
7.04806e-02 |
1.342e-02 |
Conversion electron |
|
7.14719e-02 |
2.555e-02 |
Conversion electron |
|
7.82449e-02 |
3.146e-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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