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Radionuclide Dosimetric Data Sheets
Plutonium-234
Summary data
General
Classification
Isotope: Pu-234
Atomic number (Z): 94
Mass number (A): 234
Neutron number (N): 140
Radioactive decay
Decay modes: α, Electron capture
Half-life: 8.8 [h]
Decay constant: 2.1880e-05 [1/s]
Daughters: Np-234 (94.0%), U-230 (6.0%)
Radioactive daughters: Np-234, U-230
Dosimetric constants
Mean alpha energy: 0.3775 [MeV]
Mean electron energy: 0.01137 [MeV]
Mean photon energy: 0.06933 [MeV]
Air kerma rate constant, Γ10: 1.087e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 1.087e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 6.230e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for alphas, Δα: 6.048e-14
[Gy·kg/Bq·s]
Equilibrium dose constant for betas/electrons, Δβ-,β+,e-:
1.822e-15 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 1.111e-14
[Gy·kg/Bq·s]
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-234 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/Pu-234 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
7.44242e-05 |
1.064e+01 |
X-ray |
|
7.55228e-05 |
1.986e-01 |
X-ray |
|
3.34653e-03 |
6.700e-02 |
X-ray |
|
1.19138e-02 |
1.087e-02 |
X-ray |
|
1.37668e-02 |
1.749e-02 |
X-ray |
|
1.39579e-02 |
1.536e-01 |
X-ray |
|
1.68587e-02 |
3.246e-02 |
X-ray |
|
1.70745e-02 |
1.258e-02 |
X-ray |
|
1.78427e-02 |
8.221e-02 |
X-ray |
|
1.80184e-02 |
1.064e-02 |
X-ray |
|
2.08890e-02 |
1.879e-02 |
X-ray |
|
9.74979e-02 |
1.804e-01 |
X-ray |
|
1.01574e-01 |
2.871e-01 |
X-ray |
|
1.13834e-01 |
3.320e-02 |
X-ray |
|
1.14778e-01 |
6.499e-02 |
X-ray |
|
1.18129e-01 |
1.692e-02 |
X-ray |
|
7.21842e-05 |
5.348e-02 |
Auger electron |
|
7.90129e-05 |
3.110e+00 |
Auger electron |
|
1.69889e-04 |
1.850e-02 |
Auger electron |
|
1.86382e-04 |
5.240e-02 |
Auger electron |
|
1.90288e-04 |
1.620e+00 |
Auger electron |
|
1.92479e-04 |
3.010e-02 |
Auger electron |
|
2.08457e-04 |
2.796e+00 |
Auger electron |
|
5.59521e-04 |
4.356e-01 |
Auger electron |
|
1.59994e-03 |
2.030e-01 |
Auger electron |
|
2.44405e-03 |
1.728e-02 |
Auger electron |
|
2.48729e-03 |
9.184e-01 |
Auger electron |
|
2.98673e-03 |
1.797e-01 |
Auger electron |
|
3.62416e-03 |
1.070e-02 |
Auger electron |
|
1.03291e-02 |
2.281e-01 |
Auger electron |
|
1.37583e-02 |
1.170e-01 |
Auger electron |
|
1.72232e-02 |
1.411e-02 |
Auger electron |
|
7.72522e-02 |
1.218e-02 |
Auger electron |
|
6.15123e+00 |
1.912e-02 |
Alpha |
|
6.20207e+00 |
4.064e-02 |
Alpha |
|
1.07048e-01 |
1.912e-02 |
Alpha recoil |
|
1.07932e-01 |
4.064e-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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