<= Return to MIRDspec isotope database
Radionuclide Dosimetric Data Sheets
Lead-214
Summary data
General
Classification
Isotope: Pb-214
Atomic number (Z): 82
Mass number (A): 214
Neutron number (N): 132
Radioactive decay
Decay modes: β-
Half-life: 26.8 [m]
Decay constant: 4.3106e-04 [1/s]
Daughters: Bi-214 (100.0%)
Radioactive daughters: Bi-214
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.29482 [MeV]
Mean photon energy: 0.25328 [MeV]
Air kerma rate constant, Γ10: 1.477e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 1.477e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 4.724e-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-:
4.724e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 4.058e-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/Pb-214 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/Pb-214 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/Pb-214 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/Pb-214 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
3.24777e-05 |
5.733e+00 |
X-ray |
|
2.46014e-03 |
2.285e-02 |
X-ray |
|
1.08390e-02 |
5.810e-02 |
X-ray |
|
1.29844e-02 |
1.128e-02 |
X-ray |
|
1.30700e-02 |
3.069e-02 |
X-ray |
|
5.32275e-02 |
1.200e-02 |
Gamma |
|
7.50642e-02 |
6.596e-02 |
X-ray |
|
7.74071e-02 |
1.103e-01 |
X-ray |
|
8.71393e-02 |
1.233e-02 |
X-ray |
|
8.76651e-02 |
2.390e-02 |
X-ray |
|
2.41997e-01 |
7.430e-02 |
Gamma |
|
2.95224e-01 |
1.930e-01 |
Gamma |
|
3.51932e-01 |
3.760e-01 |
Gamma |
|
7.85960e-01 |
1.070e-02 |
Gamma |
|
4.94487e-02 |
2.732e-02 |
Beta |
|
1.44446e-01 |
1.164e-02 |
Beta |
|
2.06812e-01 |
4.822e-01 |
Beta |
|
2.26981e-01 |
4.162e-01 |
Beta |
|
3.36347e-01 |
6.213e-02 |
Beta |
|
4.07181e-05 |
1.338e+00 |
Auger electron |
|
8.98390e-05 |
1.822e+00 |
Auger electron |
|
1.73870e-04 |
9.675e-01 |
Auger electron |
|
4.32837e-04 |
2.272e-01 |
Auger electron |
|
9.09138e-04 |
1.214e-01 |
Auger electron |
|
1.96059e-03 |
5.186e-01 |
Auger electron |
|
2.23678e-03 |
6.801e-02 |
Auger electron |
|
8.27506e-03 |
1.415e-01 |
Auger electron |
|
1.07436e-02 |
6.366e-02 |
Auger electron |
|
3.68515e-02 |
1.053e-01 |
Conversion electron |
|
3.74595e-02 |
1.098e-02 |
Conversion electron |
|
5.00606e-02 |
2.786e-02 |
Conversion electron |
|
1.51165e-01 |
5.380e-02 |
Conversion electron |
|
2.04392e-01 |
7.538e-02 |
Conversion electron |
|
2.61100e-01 |
9.796e-02 |
Conversion electron |
|
2.78848e-01 |
1.174e-02 |
Conversion electron |
|
3.35556e-01 |
1.521e-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)
<= Return to MIRDspec isotope database
