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Radionuclide Dosimetric Data Sheets
Uranium-230
Summary data
General
Classification
Isotope: U-230
Atomic number (Z): 92
Mass number (A): 230
Neutron number (N): 138
Radioactive decay
Decay modes: α
Half-life: 20.8 [d]
Decay constant: 3.8570e-07 [1/s]
Daughters: Th-226 (100.0%)
Radioactive daughters: Th-226
Dosimetric constants
Mean alpha energy: 5.9681 [MeV]
Mean electron energy: 0.02156 [MeV]
Mean photon energy: 0.00323 [MeV]
Air kerma rate constant, Γ10: 3.147e-18 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 3.147e-18 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 9.597e-13 [Gy·kg/Bq·s]
Equilibrium dose constant for alphas, Δα: 9.562e-13
[Gy·kg/Bq·s]
Equilibrium dose constant for betas/electrons, Δβ-,β+,e-:
3.454e-15 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 5.175e-16
[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/U-230 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/U-230 Summary 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/U-230 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
8.23264e-05 |
3.322e+00 |
X-ray |
|
3.07238e-03 |
1.837e-02 |
X-ray |
|
1.29764e-02 |
3.689e-02 |
X-ray |
|
1.62776e-02 |
4.893e-02 |
X-ray |
|
1.90652e-02 |
1.088e-02 |
X-ray |
|
5.13280e-05 |
8.001e-01 |
Auger electron |
|
1.33396e-04 |
8.851e-01 |
Auger electron |
|
1.88248e-04 |
5.081e-01 |
Auger electron |
|
5.02327e-04 |
1.308e-01 |
Auger electron |
|
1.77127e-03 |
2.192e-02 |
Auger electron |
|
2.32867e-03 |
2.875e-01 |
Auger electron |
|
2.74702e-03 |
4.960e-02 |
Auger electron |
|
1.00097e-02 |
7.601e-02 |
Auger electron |
|
1.31492e-02 |
3.793e-02 |
Auger electron |
|
5.24200e-02 |
1.290e-01 |
Conversion electron |
|
5.58850e-02 |
1.020e-01 |
Conversion electron |
|
6.81638e-02 |
6.496e-02 |
Conversion electron |
|
7.22000e-02 |
2.239e-02 |
Conversion electron |
|
5.81747e+00 |
3.198e-01 |
Alpha |
|
5.88841e+00 |
6.736e-01 |
Alpha |
|
1.03031e-01 |
3.198e-01 |
Alpha recoil |
|
1.04287e-01 |
6.736e-01 |
Alpha recoil |
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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