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Radionuclide Dosimetric Data Sheets
Cerium-145
Summary data
General
Classification
Isotope: Ce-145
Atomic number (Z): 58
Mass number (A): 145
Neutron number (N): 87
Radioactive decay
Decay modes: β-
Half-life: 3.01 [m]
Decay constant: 3.8380e-03 [1/s]
Daughters: Pr-145 (100.0%)
Radioactive daughters: Pr-145
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.67942 [MeV]
Mean photon energy: 0.81424 [MeV]
Air kerma rate constant, Γ10: 3.229e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 3.229e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 1.089e-13 [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-:
1.089e-13 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 1.305e-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/Ce-145 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/Ce-145 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/Ce-145 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/Ce-145 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.56196e-05 |
1.291e+01 |
X-ray |
|
5.01953e-03 |
5.772e-02 |
X-ray |
|
5.48692e-03 |
3.551e-02 |
X-ray |
|
3.55671e-02 |
2.605e-01 |
X-ray |
|
3.60557e-02 |
4.757e-01 |
X-ray |
|
4.06843e-02 |
4.662e-02 |
X-ray |
|
4.07816e-02 |
9.026e-02 |
X-ray |
|
4.17904e-02 |
1.938e-02 |
X-ray |
|
6.25400e-02 |
1.333e-01 |
Gamma |
|
2.07610e-01 |
1.086e-02 |
Gamma |
|
2.32080e-01 |
2.036e-02 |
Gamma |
|
2.84530e-01 |
8.142e-02 |
Gamma |
|
3.50900e-01 |
2.537e-02 |
Gamma |
|
4.23600e-01 |
3.835e-02 |
Gamma |
|
4.35990e-01 |
1.209e-02 |
Gamma |
|
4.39710e-01 |
6.726e-02 |
Gamma |
|
4.92210e-01 |
1.475e-02 |
Gamma |
|
7.24330e-01 |
5.900e-01 |
Gamma |
|
7.83090e-01 |
2.348e-02 |
Gamma |
|
8.59610e-01 |
1.652e-02 |
Gamma |
|
1.11068e+00 |
2.472e-02 |
Gamma |
|
1.14803e+00 |
9.145e-02 |
Gamma |
|
4.74227e-01 |
1.882e-01 |
Beta |
|
5.16759e-01 |
3.052e-02 |
Beta |
|
6.31298e-01 |
3.154e-02 |
Beta |
|
6.57198e-01 |
6.715e-01 |
Beta |
|
7.66468e-01 |
1.017e-02 |
Beta |
|
9.81650e-01 |
6.105e-02 |
Beta |
|
1.29601e-05 |
1.509e+00 |
Auger electron |
|
3.35200e-05 |
1.225e-02 |
Auger electron |
|
7.04282e-05 |
1.613e+00 |
Auger electron |
|
8.72055e-05 |
4.533e+00 |
Auger electron |
|
1.42960e-04 |
7.145e-01 |
Auger electron |
|
4.13467e-04 |
1.487e-01 |
Auger electron |
|
6.67520e-04 |
1.672e+00 |
Auger electron |
|
8.25527e-04 |
1.183e-01 |
Auger electron |
|
3.99592e-03 |
6.409e-01 |
Auger electron |
|
4.89904e-03 |
2.134e-01 |
Auger electron |
|
5.83532e-03 |
1.749e-02 |
Auger electron |
|
2.05300e-02 |
9.740e-01 |
Conversion electron |
|
2.93378e-02 |
5.308e-02 |
Auger electron |
|
3.45832e-02 |
2.524e-02 |
Auger electron |
|
5.57402e-02 |
1.238e-01 |
Conversion electron |
|
5.60971e-02 |
1.004e-02 |
Conversion electron |
|
6.13116e-02 |
2.875e-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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