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Radionuclide Dosimetric Data Sheets
Holmium-153
Summary data
General
Classification
Isotope: Ho-153
Atomic number (Z): 67
Mass number (A): 153
Neutron number (N): 86
Radioactive decay
Decay modes: α, β+, Electron capture
Half-life: 2.01 [m]
Decay constant: 5.7475e-03 [1/s]
Daughters: Dy-153 (99.9%), Tb-149m (0.051%)
Radioactive daughters: Dy-153, Tb-149m
Dosimetric constants
Mean alpha energy: 0.002 [MeV]
Mean electron energy: 0.53867 [MeV]
Mean photon energy: 1.02814 [MeV]
Air kerma rate constant, Γ10: 2.248e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 3.843e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 8.663e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for alphas, Δα: 3.204e-16
[Gy·kg/Bq·s]
Equilibrium dose constant for betas/electrons, Δβ-,β+,e-:
8.630e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 1.647e-13
[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/Ho-153 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/Ho-153 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-153 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-153 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.37105e-05 |
6.288e+00 |
X-ray |
|
1.22929e-03 |
1.203e-02 |
X-ray |
|
6.48150e-03 |
5.099e-02 |
X-ray |
|
7.25411e-03 |
3.440e-02 |
X-ray |
|
4.52703e-02 |
1.617e-01 |
X-ray |
|
4.60801e-02 |
2.891e-01 |
X-ray |
|
5.20302e-02 |
2.975e-02 |
X-ray |
|
5.21989e-02 |
5.751e-02 |
X-ray |
|
5.35696e-02 |
1.269e-02 |
X-ray |
|
6.62000e-02 |
4.822e-02 |
Gamma |
|
8.48000e-02 |
1.607e-02 |
Gamma |
|
1.08700e-01 |
2.009e-02 |
Gamma |
|
2.95800e-01 |
6.697e-01 |
Gamma |
|
3.65900e-01 |
2.009e-02 |
Gamma |
|
5.11000e-01 |
8.238e-01 |
Annihilation photon |
|
5.77000e-01 |
1.071e-02 |
Gamma |
|
6.37000e-01 |
5.357e-02 |
Gamma |
|
6.88500e-01 |
3.683e-02 |
Gamma |
|
7.26800e-01 |
1.205e-02 |
Gamma |
|
9.24000e-01 |
1.205e-02 |
Gamma |
|
1.08580e+00 |
2.545e-02 |
Gamma |
|
1.16760e+00 |
1.071e-02 |
Gamma |
|
1.27650e+00 |
3.348e-02 |
Gamma |
|
1.38100e+00 |
1.272e-02 |
Gamma |
|
8.27716e-01 |
1.080e-02 |
Positron |
|
1.11021e+00 |
1.222e-02 |
Positron |
|
1.27188e+00 |
3.332e-01 |
Positron |
|
1.81686e-05 |
3.480e-01 |
Auger electron |
|
1.28563e-04 |
2.870e+00 |
Auger electron |
|
1.55210e-04 |
1.410e-01 |
Auger electron |
|
2.09696e-04 |
4.619e-01 |
Auger electron |
|
6.57886e-04 |
9.128e-02 |
Auger electron |
|
1.01693e-03 |
1.000e+00 |
Auger electron |
|
1.19261e-03 |
5.438e-02 |
Auger electron |
|
5.12131e-03 |
3.576e-01 |
Auger electron |
|
6.38388e-03 |
1.258e-01 |
Auger electron |
|
7.68026e-03 |
1.115e-02 |
Auger electron |
|
3.70640e-02 |
2.301e-02 |
Auger electron |
|
4.39727e-02 |
1.151e-02 |
Auger electron |
|
5.48390e-02 |
1.800e-02 |
Conversion electron |
|
2.41939e-01 |
6.834e-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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