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Radionuclide Dosimetric Data Sheets
Curium-243
Summary data
General
Classification
Isotope: Cm-243
Atomic number (Z): 96
Mass number (A): 243
Neutron number (N): 147
Radioactive decay
Decay modes: α, Electron capture
Half-life: 29.1 [y]
Decay constant: 7.5481e-10 [1/s]
Daughters: Pu-239 (99.8%), Am-243 (0.24%)
Radioactive daughters: Pu-239, Am-243
Dosimetric constants
Mean alpha energy: 5.8928 [MeV]
Mean electron energy: 0.13424 [MeV]
Mean photon energy: 0.13528 [MeV]
Air kerma rate constant, Γ10: 1.506e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 1.506e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 9.656e-13 [Gy·kg/Bq·s]
Equilibrium dose constant for alphas, Δα: 9.441e-13
[Gy·kg/Bq·s]
Equilibrium dose constant for betas/electrons, Δβ-,β+,e-:
2.151e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 2.167e-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/Cm-243 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/Cm-243 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/Cm-243 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
7.19551e-05 |
2.058e+01 |
X-ray |
|
7.45980e-05 |
1.310e-02 |
X-ray |
|
3.47095e-03 |
1.228e-01 |
X-ray |
|
1.21689e-02 |
1.353e-02 |
X-ray |
|
1.40932e-02 |
2.150e-02 |
X-ray |
|
1.42941e-02 |
1.888e-01 |
X-ray |
|
1.72768e-02 |
4.017e-02 |
X-ray |
|
1.75735e-02 |
1.146e-02 |
X-ray |
|
1.83932e-02 |
1.378e-01 |
X-ray |
|
2.15285e-02 |
3.181e-02 |
X-ray |
|
9.99790e-02 |
1.469e-01 |
X-ray |
|
1.04279e-01 |
2.325e-01 |
X-ray |
|
1.16802e-01 |
2.696e-02 |
X-ray |
|
1.17801e-01 |
5.289e-02 |
X-ray |
|
1.21244e-01 |
1.385e-02 |
X-ray |
|
2.09753e-01 |
3.292e-02 |
Gamma |
|
2.28184e-01 |
1.057e-01 |
Gamma |
|
2.77599e-01 |
1.397e-01 |
Gamma |
|
8.90051e-05 |
5.723e+00 |
Auger electron |
|
1.76631e-04 |
3.593e-02 |
Auger electron |
|
1.95203e-04 |
3.194e+00 |
Auger electron |
|
2.42538e-04 |
5.353e+00 |
Auger electron |
|
6.24664e-04 |
1.181e+00 |
Auger electron |
|
1.68908e-03 |
2.106e-01 |
Auger electron |
|
2.58662e-03 |
1.608e+00 |
Auger electron |
|
3.13946e-03 |
3.351e-01 |
Auger electron |
|
3.31110e-03 |
5.650e-01 |
Conversion electron |
|
3.82309e-03 |
2.049e-02 |
Auger electron |
|
7.86100e-03 |
2.030e-01 |
Conversion electron |
|
1.06626e-02 |
2.815e-01 |
Auger electron |
|
1.38501e-02 |
5.023e-02 |
Conversion electron |
|
1.42048e-02 |
1.459e-01 |
Auger electron |
|
1.77860e-02 |
1.778e-02 |
Auger electron |
|
1.84000e-02 |
1.831e-02 |
Conversion electron |
|
2.15410e-02 |
5.479e-02 |
Conversion electron |
|
2.22920e-02 |
2.033e-02 |
Conversion electron |
|
2.62930e-02 |
2.198e-02 |
Conversion electron |
|
2.65920e-02 |
1.266e-02 |
Conversion electron |
|
2.70440e-02 |
3.125e-02 |
Conversion electron |
|
3.13440e-02 |
2.429e-02 |
Conversion electron |
|
3.49020e-02 |
8.467e-02 |
Conversion electron |
|
3.92020e-02 |
6.793e-02 |
Conversion electron |
|
4.01131e-02 |
2.241e-02 |
Conversion electron |
|
4.48651e-02 |
2.086e-02 |
Conversion electron |
|
4.54290e-02 |
5.558e-02 |
Conversion electron |
|
4.97290e-02 |
4.231e-02 |
Conversion electron |
|
5.27231e-02 |
4.371e-02 |
Conversion electron |
|
5.72730e-02 |
1.561e-02 |
Conversion electron |
|
6.32501e-02 |
2.810e-02 |
Conversion electron |
|
6.78000e-02 |
1.004e-02 |
Conversion electron |
|
8.74030e-02 |
9.201e-02 |
Conversion electron |
|
1.05834e-01 |
2.332e-01 |
Conversion electron |
|
1.55249e-01 |
1.751e-01 |
Conversion electron |
|
1.86631e-01 |
1.623e-02 |
Conversion electron |
|
2.05062e-01 |
4.093e-02 |
Conversion electron |
|
2.23634e-01 |
1.121e-02 |
Conversion electron |
|
2.54477e-01 |
3.061e-02 |
Conversion electron |
|
5.68528e+00 |
1.593e-02 |
Alpha |
|
5.74162e+00 |
1.145e-01 |
Alpha |
|
5.78555e+00 |
7.259e-01 |
Alpha |
|
5.99185e+00 |
5.676e-02 |
Alpha |
|
6.05857e+00 |
4.680e-02 |
Alpha |
|
6.06631e+00 |
1.494e-02 |
Alpha |
|
9.52129e-02 |
1.593e-02 |
Alpha recoil |
|
9.61565e-02 |
1.145e-01 |
Alpha recoil |
|
9.68922e-02 |
7.259e-01 |
Alpha recoil |
|
1.00347e-01 |
5.676e-02 |
Alpha recoil |
|
1.01465e-01 |
4.680e-02 |
Alpha recoil |
|
1.01594e-01 |
1.494e-02 |
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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