<= Return to MIRDspec isotope database
Radionuclide Dosimetric Data Sheets
Holmium-162
Summary data
General
Classification
Isotope: Ho-162
Atomic number (Z): 67
Mass number (A): 162
Neutron number (N): 95
Radioactive decay
Decay modes: β+, Electron capture
Half-life: 15.0 [m]
Decay constant: 7.7016e-04 [1/s]
Daughters: Dy-162 (100.0%)
Radioactive daughters: None
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.05984 [MeV]
Mean photon energy: 0.16404 [MeV]
Air kerma rate constant, Γ10: 5.218e-18 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 6.694e-18 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 9.587e-15 [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-:
9.587e-15 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 2.628e-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/Ho-162 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-162 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-162 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-162 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.37051e-05 |
1.220e+01 |
X-ray |
|
1.22911e-03 |
2.346e-02 |
X-ray |
|
6.44440e-03 |
1.107e-02 |
X-ray |
|
6.48150e-03 |
9.789e-02 |
X-ray |
|
7.25411e-03 |
7.173e-02 |
X-ray |
|
7.62077e-03 |
1.657e-02 |
X-ray |
|
8.42364e-03 |
1.258e-02 |
X-ray |
|
4.52703e-02 |
2.551e-01 |
X-ray |
|
4.60801e-02 |
4.559e-01 |
X-ray |
|
5.20302e-02 |
4.692e-02 |
X-ray |
|
5.21989e-02 |
9.070e-02 |
X-ray |
|
5.35316e-02 |
1.033e-02 |
X-ray |
|
5.35696e-02 |
2.001e-02 |
X-ray |
|
8.07000e-02 |
8.022e-02 |
Gamma |
|
5.11000e-01 |
7.627e-02 |
Annihilation photon |
|
1.31960e+00 |
3.820e-02 |
Gamma |
|
4.75015e-01 |
1.907e-02 |
Positron |
|
5.10441e-01 |
1.907e-02 |
Positron |
|
1.81686e-05 |
6.725e-01 |
Auger electron |
|
1.28570e-04 |
5.567e+00 |
Auger electron |
|
1.54502e-04 |
2.739e-01 |
Auger electron |
|
2.10267e-04 |
8.937e-01 |
Auger electron |
|
6.49340e-04 |
1.601e-01 |
Auger electron |
|
1.01696e-03 |
1.950e+00 |
Auger electron |
|
1.19234e-03 |
1.060e-01 |
Auger electron |
|
5.12241e-03 |
6.935e-01 |
Auger electron |
|
6.38419e-03 |
2.440e-01 |
Auger electron |
|
7.67949e-03 |
2.161e-02 |
Auger electron |
|
2.68390e-02 |
1.420e-01 |
Conversion electron |
|
3.70640e-02 |
3.629e-02 |
Auger electron |
|
4.39727e-02 |
1.815e-02 |
Auger electron |
|
7.16875e-02 |
1.327e-02 |
Conversion electron |
|
7.21093e-02 |
1.252e-01 |
Conversion electron |
|
7.29190e-02 |
1.321e-01 |
Conversion electron |
|
7.90379e-02 |
6.521e-02 |
Conversion electron |
|
8.07000e-02 |
1.705e-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)
<= Return to MIRDspec isotope database
