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Radionuclide Dosimetric Data Sheets
Cerium-132
Summary data
General
Classification
Isotope: Ce-132
Atomic number (Z): 58
Mass number (A): 132
Neutron number (N): 74
Radioactive decay
Decay modes: Electron capture
Half-life: 3.51 [h]
Decay constant: 5.4855e-05 [1/s]
Daughters: La-132 (100.0%)
Radioactive daughters: La-132
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.01804 [MeV]
Mean photon energy: 0.27272 [MeV]
Air kerma rate constant, Γ10: 1.223e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 1.223e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 2.890e-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-:
2.890e-15 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 4.369e-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/Ce-132 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-132 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/Ce-132 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
2.10713e-05 |
1.374e+01 |
X-ray |
|
4.63652e-03 |
4.855e-02 |
X-ray |
|
5.03753e-03 |
2.894e-02 |
X-ray |
|
3.30405e-02 |
2.377e-01 |
X-ray |
|
3.34591e-02 |
4.365e-01 |
X-ray |
|
3.77381e-02 |
4.207e-02 |
X-ray |
|
3.78202e-02 |
8.150e-02 |
X-ray |
|
3.87359e-02 |
1.738e-02 |
X-ray |
|
1.55370e-01 |
1.053e-01 |
Gamma |
|
1.82110e-01 |
7.740e-01 |
Gamma |
|
1.90040e-01 |
2.670e-02 |
Gamma |
|
2.16830e-01 |
4.954e-02 |
Gamma |
|
2.51460e-01 |
2.245e-02 |
Gamma |
|
2.79120e-01 |
1.935e-02 |
Gamma |
|
3.03120e-01 |
2.090e-02 |
Gamma |
|
3.29640e-01 |
2.322e-02 |
Gamma |
|
3.68510e-01 |
1.130e-02 |
Gamma |
|
4.24670e-01 |
1.161e-02 |
Gamma |
|
4.51440e-01 |
2.245e-02 |
Gamma |
|
5.76380e-01 |
1.006e-02 |
Gamma |
|
1.18532e-05 |
2.402e+00 |
Auger electron |
|
3.33700e-05 |
1.979e-02 |
Auger electron |
|
6.07463e-05 |
4.781e+00 |
Auger electron |
|
6.28974e-05 |
1.522e+00 |
Auger electron |
|
1.17693e-04 |
6.827e-01 |
Auger electron |
|
3.61477e-04 |
1.578e-01 |
Auger electron |
|
5.79836e-04 |
1.597e+00 |
Auger electron |
|
7.30716e-04 |
1.379e-01 |
Auger electron |
|
3.70216e-03 |
6.272e-01 |
Auger electron |
|
4.51653e-03 |
2.075e-01 |
Auger electron |
|
5.36270e-03 |
1.632e-02 |
Auger electron |
|
2.04082e-02 |
1.218e-02 |
Conversion electron |
|
2.73123e-02 |
5.460e-02 |
Auger electron |
|
3.21336e-02 |
2.555e-02 |
Auger electron |
|
1.43167e-01 |
3.002e-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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