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Radionuclide Dosimetric Data Sheets
Cerium-141
Summary data
General
Classification
Isotope: Ce-141
Atomic number (Z): 58
Mass number (A): 141
Neutron number (N): 83
Radioactive decay
Decay modes: β-
Half-life: 32.51 [d]
Decay constant: 2.4679e-07 [1/s]
Daughters: Pr-141 (100.0%)
Radioactive daughters: None
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.17103 [MeV]
Mean photon energy: 0.0768 [MeV]
Air kerma rate constant, Γ10: 2.919e-18 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 2.919e-18 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 2.740e-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-:
2.740e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 1.230e-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-141 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-141 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-141 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-141 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.56194e-05 |
2.460e+00 |
X-ray |
|
5.01953e-03 |
1.101e-02 |
X-ray |
|
3.55671e-02 |
4.969e-02 |
X-ray |
|
3.60557e-02 |
9.074e-02 |
X-ray |
|
4.07816e-02 |
1.722e-02 |
X-ray |
|
1.45443e-01 |
4.829e-01 |
Gamma |
|
1.29792e-01 |
6.970e-01 |
Beta |
|
1.80864e-01 |
3.030e-01 |
Beta |
|
1.29601e-05 |
2.875e-01 |
Auger electron |
|
7.04272e-05 |
3.073e-01 |
Auger electron |
|
8.72057e-05 |
8.639e-01 |
Auger electron |
|
1.42950e-04 |
1.361e-01 |
Auger electron |
|
4.13460e-04 |
2.830e-02 |
Auger electron |
|
6.67514e-04 |
3.187e-01 |
Auger electron |
|
8.25515e-04 |
2.254e-02 |
Auger electron |
|
3.99570e-03 |
1.222e-01 |
Auger electron |
|
4.89880e-03 |
4.067e-02 |
Auger electron |
|
2.93378e-02 |
1.012e-02 |
Auger electron |
|
1.03433e-01 |
1.889e-01 |
Conversion electron |
|
1.38644e-01 |
2.392e-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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