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Radionuclide Dosimetric Data Sheets
Curium-247
Summary data
General
Classification
Isotope: Cm-247
Atomic number (Z): 96
Mass number (A): 247
Neutron number (N): 151
Radioactive decay
Decay modes: α
Half-life: 15600000.0 [y]
Decay constant: 1.4080e-15 [1/s]
Daughters: Pu-243 (100.0%)
Radioactive daughters: Pu-243
Dosimetric constants
Mean alpha energy: 5.0285 [MeV]
Mean electron energy: 0.01135 [MeV]
Mean photon energy: 0.31378 [MeV]
Air kerma rate constant, Γ10: 1.220e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 1.220e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 8.075e-13 [Gy·kg/Bq·s]
Equilibrium dose constant for alphas, Δα: 8.057e-13
[Gy·kg/Bq·s]
Equilibrium dose constant for betas/electrons, Δβ-,β+,e-:
1.818e-15 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 5.027e-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-247 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-247 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-247 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
7.19884e-05 |
5.175e-01 |
X-ray |
|
9.99790e-02 |
1.104e-02 |
X-ray |
|
1.04279e-01 |
1.748e-02 |
X-ray |
|
2.78000e-01 |
3.400e-02 |
Gamma |
|
2.87500e-01 |
2.000e-02 |
Gamma |
|
3.46000e-01 |
1.300e-02 |
Gamma |
|
4.02400e-01 |
7.200e-01 |
Gamma |
|
8.91013e-05 |
1.417e-01 |
Auger electron |
|
1.91381e-04 |
7.983e-02 |
Auger electron |
|
2.35332e-04 |
1.359e-01 |
Auger electron |
|
5.58800e-04 |
2.054e-02 |
Auger electron |
|
2.54970e-03 |
4.479e-02 |
Auger electron |
|
1.05193e-02 |
1.149e-02 |
Auger electron |
|
1.65150e-01 |
2.329e-02 |
Conversion electron |
|
2.80050e-01 |
1.297e-02 |
Conversion electron |
|
4.81863e+00 |
4.700e-02 |
Alpha |
|
4.86939e+00 |
7.100e-01 |
Alpha |
|
4.94062e+00 |
1.600e-02 |
Alpha |
|
4.98243e+00 |
2.000e-02 |
Alpha |
|
5.14289e+00 |
1.200e-02 |
Alpha |
|
5.20979e+00 |
5.700e-02 |
Alpha |
|
5.26527e+00 |
1.380e-01 |
Alpha |
|
7.93706e-02 |
4.700e-02 |
Alpha recoil |
|
8.02067e-02 |
7.100e-01 |
Alpha recoil |
|
8.13800e-02 |
1.600e-02 |
Alpha recoil |
|
8.20687e-02 |
2.000e-02 |
Alpha recoil |
|
8.47116e-02 |
1.200e-02 |
Alpha recoil |
|
8.58136e-02 |
5.700e-02 |
Alpha recoil |
|
8.67275e-02 |
1.380e-01 |
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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