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Radionuclide Dosimetric Data Sheets
Europium-154
Summary data
General
Classification
Isotope: Eu-154
Atomic number (Z): 63
Mass number (A): 154
Neutron number (N): 91
Radioactive decay
Decay modes: β-, Electron capture
Half-life: 8.593 [y]
Decay constant: 2.5561e-09 [1/s]
Daughters: Gd-154 (100.0%), Sm-154 (0.02%)
Radioactive daughters: None
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.27301 [MeV]
Mean photon energy: 1.24929 [MeV]
Air kerma rate constant, Γ10: 4.421e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 4.421e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 4.374e-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-:
4.374e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 2.002e-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/Eu-154 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/Eu-154 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/Eu-154 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/Eu-154 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.94259e-05 |
4.312e+00 |
X-ray |
|
6.04290e-03 |
2.988e-02 |
X-ray |
|
6.71540e-03 |
2.327e-02 |
X-ray |
|
4.23559e-02 |
7.368e-02 |
X-ray |
|
4.30603e-02 |
1.325e-01 |
X-ray |
|
4.86161e-02 |
1.346e-02 |
X-ray |
|
4.87612e-02 |
2.604e-02 |
X-ray |
|
1.23071e-01 |
4.056e-01 |
Gamma |
|
2.47930e-01 |
6.915e-02 |
Gamma |
|
5.91762e-01 |
4.962e-02 |
Gamma |
|
6.92425e-01 |
1.792e-02 |
Gamma |
|
7.23305e-01 |
2.011e-01 |
Gamma |
|
7.56804e-01 |
4.542e-02 |
Gamma |
|
8.73190e-01 |
1.220e-01 |
Gamma |
|
9.96262e-01 |
1.053e-01 |
Gamma |
|
1.00472e+00 |
1.791e-01 |
Gamma |
|
1.27444e+00 |
3.499e-01 |
Gamma |
|
1.59650e+00 |
1.788e-02 |
Gamma |
|
6.91827e-02 |
2.851e-01 |
Beta |
|
1.01356e-01 |
1.635e-02 |
Beta |
|
1.76174e-01 |
3.618e-01 |
Beta |
|
2.76519e-01 |
1.675e-01 |
Beta |
|
3.28022e-01 |
3.489e-02 |
Beta |
|
6.95483e-01 |
9.968e-02 |
Beta |
|
1.68638e-05 |
2.879e-01 |
Auger electron |
|
1.13459e-04 |
1.938e+00 |
Auger electron |
|
1.22437e-04 |
1.606e-01 |
Auger electron |
|
1.83939e-04 |
2.989e-01 |
Auger electron |
|
5.43906e-04 |
4.644e-02 |
Auger electron |
|
8.97660e-04 |
6.631e-01 |
Auger electron |
|
1.07447e-03 |
4.492e-02 |
Auger electron |
|
4.77043e-03 |
2.417e-01 |
Auger electron |
|
5.92447e-03 |
8.475e-02 |
Auger electron |
|
3.47387e-02 |
1.149e-02 |
Auger electron |
|
7.27680e-02 |
2.648e-01 |
Conversion electron |
|
1.14721e-01 |
2.518e-02 |
Conversion electron |
|
1.15124e-01 |
7.367e-02 |
Conversion electron |
|
1.15828e-01 |
7.071e-02 |
Conversion electron |
|
1.21529e-01 |
3.981e-02 |
Conversion electron |
|
1.23071e-01 |
1.060e-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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