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Radionuclide Dosimetric Data Sheets
Plutonium-245
Summary data
General
Classification
Isotope: Pu-245
Atomic number (Z): 94
Mass number (A): 245
Neutron number (N): 151
Radioactive decay
Decay modes: β-
Half-life: 10.5 [h]
Decay constant: 1.8337e-05 [1/s]
Daughters: Am-245 (100.0%)
Radioactive daughters: Am-245
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.31904 [MeV]
Mean photon energy: 0.40268 [MeV]
Air kerma rate constant, Γ10: 1.799e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 1.799e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 5.112e-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-:
5.112e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 6.452e-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/Pu-245 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/Pu-245 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/Pu-245 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/Pu-245 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
7.21594e-05 |
4.142e+00 |
X-ray |
|
3.54497e-03 |
2.828e-02 |
X-ray |
|
1.46345e-02 |
6.564e-02 |
X-ray |
|
1.77003e-02 |
1.406e-02 |
X-ray |
|
1.89584e-02 |
4.022e-02 |
X-ray |
|
1.02508e-01 |
8.191e-02 |
X-ray |
|
1.07043e-01 |
1.289e-01 |
X-ray |
|
1.19828e-01 |
1.499e-02 |
X-ray |
|
1.20885e-01 |
2.945e-02 |
X-ray |
|
2.80385e-01 |
1.284e-02 |
Gamma |
|
3.08222e-01 |
4.901e-02 |
Gamma |
|
3.27428e-01 |
2.535e-01 |
Gamma |
|
3.76676e-01 |
3.211e-02 |
Gamma |
|
4.91591e-01 |
2.704e-02 |
Gamma |
|
5.60130e-01 |
5.408e-02 |
Gamma |
|
6.30102e-01 |
2.704e-02 |
Gamma |
|
7.99870e-01 |
1.572e-02 |
Gamma |
|
8.40560e-01 |
1.284e-02 |
Gamma |
|
9.10460e-01 |
1.386e-02 |
Gamma |
|
9.38400e-01 |
1.014e-02 |
Gamma |
|
9.87600e-01 |
1.318e-02 |
Gamma |
|
1.01833e+00 |
1.031e-02 |
Gamma |
|
3.72945e-02 |
1.594e-02 |
Beta |
|
5.92914e-02 |
2.690e-02 |
Beta |
|
6.80268e-02 |
8.269e-02 |
Beta |
|
7.88503e-02 |
1.893e-02 |
Beta |
|
8.89426e-02 |
1.395e-01 |
Beta |
|
2.51340e-01 |
6.675e-02 |
Beta |
|
2.75631e-01 |
5.081e-01 |
Beta |
|
3.78139e-01 |
1.196e-01 |
Beta |
|
9.53104e-05 |
1.159e+00 |
Auger electron |
|
1.89754e-04 |
6.404e-01 |
Auger electron |
|
2.58445e-04 |
1.088e+00 |
Auger electron |
|
5.73430e-04 |
1.740e-01 |
Auger electron |
|
1.84837e-03 |
6.230e-02 |
Auger electron |
|
2.60850e-03 |
3.564e-01 |
Auger electron |
|
3.16928e-03 |
7.598e-02 |
Auger electron |
|
1.07811e-02 |
9.020e-02 |
Auger electron |
|
1.44236e-02 |
4.716e-02 |
Auger electron |
|
1.54815e-01 |
1.162e-02 |
Conversion electron |
|
1.82652e-01 |
3.879e-02 |
Conversion electron |
|
2.01858e-01 |
1.835e-01 |
Conversion electron |
|
2.51106e-01 |
1.942e-02 |
Conversion electron |
|
3.03601e-01 |
3.257e-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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