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Radionuclide Dosimetric Data Sheets
Hafnium-167
Summary data
General
Classification
Isotope: Hf-167
Atomic number (Z): 72
Mass number (A): 167
Neutron number (N): 95
Radioactive decay
Decay modes: β+, Electron capture
Half-life: 2.05 [m]
Decay constant: 5.6353e-03 [1/s]
Daughters: Lu-167 (100.0%)
Radioactive daughters: Lu-167
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.49515 [MeV]
Mean photon energy: 0.61711 [MeV]
Air kerma rate constant, Γ10: 9.031e-18 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 2.374e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 7.933e-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-:
7.933e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 9.887e-14
[Gy·kg/Bq·s]
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/Hf-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/Hf-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/Hf-167 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.40161e-05 |
5.952e+00 |
X-ray |
|
1.56946e-03 |
1.640e-02 |
X-ray |
|
7.64540e-03 |
6.062e-02 |
X-ray |
|
8.72221e-03 |
3.740e-02 |
X-ray |
|
9.04392e-03 |
1.043e-02 |
X-ray |
|
5.30692e-02 |
1.505e-01 |
X-ray |
|
5.41988e-02 |
2.642e-01 |
X-ray |
|
6.11839e-02 |
2.800e-02 |
X-ray |
|
6.14258e-02 |
5.410e-02 |
X-ray |
|
6.30870e-02 |
1.210e-02 |
X-ray |
|
1.39900e-01 |
2.280e-02 |
Gamma |
|
1.75400e-01 |
3.600e-02 |
Gamma |
|
3.15240e-01 |
6.000e-01 |
Gamma |
|
5.11000e-01 |
7.600e-01 |
Annihilation photon |
|
1.21677e+00 |
2.300e-01 |
Positron |
|
1.36020e+00 |
1.500e-01 |
Positron |
|
9.96739e-06 |
5.176e-01 |
Auger electron |
|
2.16358e-05 |
7.337e-01 |
Auger electron |
|
1.56516e-04 |
2.124e+00 |
Auger electron |
|
2.64882e-04 |
6.430e-02 |
Auger electron |
|
2.66408e-04 |
3.794e-01 |
Auger electron |
|
5.64830e-04 |
9.516e-02 |
Auger electron |
|
1.30969e-03 |
8.941e-01 |
Auger electron |
|
1.48434e-03 |
4.298e-02 |
Auger electron |
|
5.97106e-03 |
2.918e-01 |
Auger electron |
|
7.52543e-03 |
1.066e-01 |
Auger electron |
|
4.32341e-02 |
1.740e-02 |
Auger electron |
|
7.64580e-02 |
2.300e-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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