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Radionuclide Dosimetric Data Sheets
Iron-52
Summary data
General
Classification
Isotope: Fe-52
Atomic number (Z): 26
Mass number (A): 52
Neutron number (N): 26
Radioactive decay
Decay modes: β+, Electron capture
Half-life: 8.275 [h]
Decay constant: 2.3268e-05 [1/s]
Daughters: Mn-52m (100.0%)
Radioactive daughters: Mn-52m
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.19169 [MeV]
Mean photon energy: 0.74045 [MeV]
Air kerma rate constant, Γ10: 5.654e-18 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 2.713e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 3.071e-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-:
3.071e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 1.186e-13
[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/Fe-52 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/Fe-52 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/Fe-52 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.14856e-05 |
2.745e+00 |
X-ray |
|
5.84793e-03 |
3.698e-02 |
X-ray |
|
5.85866e-03 |
7.250e-02 |
X-ray |
|
1.68688e-01 |
9.918e-01 |
Gamma |
|
5.11000e-01 |
1.109e+00 |
Annihilation photon |
|
3.39918e-01 |
5.547e-01 |
Positron |
|
3.64613e-05 |
1.234e+00 |
Auger electron |
|
6.48980e-05 |
1.277e-01 |
Auger electron |
|
5.59354e-04 |
6.400e-01 |
Auger electron |
|
5.15113e-03 |
2.231e-01 |
Auger electron |
|
5.76225e-03 |
5.395e-02 |
Auger 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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