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Radionuclide Dosimetric Data Sheets
Dysprosium-167
Summary data
General
Classification
Isotope: Dy-167
Atomic number (Z): 66
Mass number (A): 167
Neutron number (N): 101
Radioactive decay
Decay modes: β-
Half-life: 6.2 [m]
Decay constant: 1.8633e-03 [1/s]
Daughters: Ho-167 (100.0%)
Radioactive daughters: Ho-167
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.72621 [MeV]
Mean photon energy: 0.53263 [MeV]
Air kerma rate constant, Γ10: 1.995e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 1.995e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 1.164e-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-:
1.164e-13 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 8.534e-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/Dy-167 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/Dy-167 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/Dy-167 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/Dy-167 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.36141e-05 |
3.666e+00 |
X-ray |
|
6.70641e-03 |
3.164e-02 |
X-ray |
|
7.53350e-03 |
2.303e-02 |
X-ray |
|
4.67702e-02 |
8.057e-02 |
X-ray |
|
4.76373e-02 |
1.435e-01 |
X-ray |
|
5.37885e-02 |
1.486e-02 |
X-ray |
|
5.39705e-02 |
2.873e-02 |
X-ray |
|
1.33190e-01 |
3.127e-02 |
Gamma |
|
2.50030e-01 |
9.572e-02 |
Gamma |
|
2.59330e-01 |
2.790e-01 |
Gamma |
|
3.10260e-01 |
2.501e-01 |
Gamma |
|
3.52200e-01 |
1.010e-02 |
Gamma |
|
5.69700e-01 |
4.810e-01 |
Gamma |
|
3.81108e-01 |
1.294e-02 |
Beta |
|
4.10214e-01 |
1.005e-02 |
Beta |
|
4.38583e-01 |
1.075e-02 |
Beta |
|
6.63003e-01 |
8.163e-01 |
Beta |
|
7.32477e-01 |
1.692e-02 |
Beta |
|
7.40102e-01 |
5.575e-02 |
Beta |
|
7.98561e-01 |
4.978e-02 |
Beta |
|
1.89749e-05 |
1.893e-01 |
Auger electron |
|
1.34848e-04 |
1.667e+00 |
Auger electron |
|
1.77048e-04 |
6.801e-02 |
Auger electron |
|
2.22313e-04 |
2.733e-01 |
Auger electron |
|
6.97139e-04 |
5.153e-02 |
Auger electron |
|
1.07449e-03 |
5.979e-01 |
Auger electron |
|
1.25026e-03 |
3.107e-02 |
Auger electron |
|
4.74100e-03 |
4.623e-02 |
Conversion electron |
|
5.29958e-03 |
2.107e-01 |
Auger electron |
|
6.61801e-03 |
7.461e-02 |
Auger electron |
|
3.45610e-02 |
1.303e-02 |
Conversion electron |
|
3.82545e-02 |
1.113e-02 |
Auger electron |
|
5.15113e-02 |
2.650e-02 |
Conversion electron |
|
5.23783e-02 |
2.930e-02 |
Conversion electron |
|
5.87115e-02 |
1.489e-02 |
Conversion electron |
|
7.74910e-02 |
3.136e-02 |
Conversion electron |
|
2.03631e-01 |
1.887e-01 |
Conversion electron |
|
2.49970e-01 |
3.104e-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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