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Radionuclide Dosimetric Data Sheets
Holmium-160
Summary data
General
Classification
Isotope: Ho-160
Atomic number (Z): 67
Mass number (A): 160
Neutron number (N): 93
Radioactive decay
Decay modes: β+, Electron capture
Half-life: 25.6 [m]
Decay constant: 4.5127e-04 [1/s]
Daughters: Dy-160 (100.0%)
Radioactive daughters: None
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.07027 [MeV]
Mean photon energy: 1.69501 [MeV]
Air kerma rate constant, Γ10: 6.257e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 6.275e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 1.126e-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-:
1.126e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 2.716e-13
[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/Ho-160 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/Ho-160 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/Ho-160 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.37045e-05 |
1.416e+01 |
X-ray |
|
1.22907e-03 |
2.725e-02 |
X-ray |
|
6.44440e-03 |
1.284e-02 |
X-ray |
|
6.48150e-03 |
1.135e-01 |
X-ray |
|
7.25411e-03 |
8.414e-02 |
X-ray |
|
7.62077e-03 |
1.920e-02 |
X-ray |
|
8.42364e-03 |
1.476e-02 |
X-ray |
|
4.52703e-02 |
2.918e-01 |
X-ray |
|
4.60801e-02 |
5.215e-01 |
X-ray |
|
5.20302e-02 |
5.367e-02 |
X-ray |
|
5.21989e-02 |
1.038e-01 |
X-ray |
|
5.35316e-02 |
1.181e-02 |
X-ray |
|
5.35696e-02 |
2.289e-02 |
X-ray |
|
8.67880e-02 |
1.363e-01 |
Gamma |
|
1.97020e-01 |
1.661e-01 |
Gamma |
|
2.97200e-01 |
1.704e-02 |
Gamma |
|
5.13470e-01 |
2.130e-02 |
Gamma |
|
5.38560e-01 |
5.964e-02 |
Gamma |
|
6.45400e-01 |
2.471e-01 |
Gamma |
|
6.46300e-01 |
4.686e-02 |
Gamma |
|
7.28180e-01 |
4.686e-01 |
Gamma |
|
7.53110e-01 |
4.260e-02 |
Gamma |
|
7.65300e-01 |
5.112e-02 |
Gamma |
|
8.72030e-01 |
9.372e-02 |
Gamma |
|
8.79370e-01 |
2.662e-01 |
Gamma |
|
9.62360e-01 |
2.556e-01 |
Gamma |
|
9.66170e-01 |
2.194e-01 |
Gamma |
|
1.00467e+00 |
2.897e-02 |
Gamma |
|
1.04780e+00 |
1.214e-02 |
Gamma |
|
1.06907e+00 |
4.047e-02 |
Gamma |
|
1.13060e+00 |
1.661e-02 |
Gamma |
|
1.81686e-05 |
7.802e-01 |
Auger electron |
|
1.28571e-04 |
6.461e+00 |
Auger electron |
|
1.54397e-04 |
3.179e-01 |
Auger electron |
|
2.10339e-04 |
1.037e+00 |
Auger electron |
|
6.48025e-04 |
1.833e-01 |
Auger electron |
|
1.01695e-03 |
2.265e+00 |
Auger electron |
|
1.19228e-03 |
1.231e-01 |
Auger electron |
|
5.12270e-03 |
8.052e-01 |
Auger electron |
|
6.38438e-03 |
2.833e-01 |
Auger electron |
|
7.67955e-03 |
2.509e-02 |
Auger electron |
|
3.29270e-02 |
2.111e-01 |
Conversion electron |
|
3.70640e-02 |
4.151e-02 |
Auger electron |
|
4.39727e-02 |
2.076e-02 |
Auger electron |
|
7.77755e-02 |
1.933e-02 |
Conversion electron |
|
7.81973e-02 |
1.513e-01 |
Conversion electron |
|
7.90070e-02 |
1.567e-01 |
Conversion electron |
|
8.51259e-02 |
7.872e-02 |
Conversion electron |
|
8.67880e-02 |
2.061e-02 |
Conversion electron |
|
1.43159e-01 |
2.762e-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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