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Radionuclide Dosimetric Data Sheets
Palladium-100
Summary data
General
Classification
Isotope: Pd-100
Atomic number (Z): 46
Mass number (A): 100
Neutron number (N): 54
Radioactive decay
Decay modes: Electron capture
Half-life: 3.63 [d]
Decay constant: 2.2101e-06 [1/s]
Daughters: Rh-100 (100.0%)
Radioactive daughters: Rh-100
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.04546 [MeV]
Mean photon energy: 0.12314 [MeV]
Air kerma rate constant, Γ10: 1.965e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 1.965e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 7.284e-15 [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-:
7.284e-15 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 1.973e-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/Pd-100 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/Pd-100 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/Pd-100 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
9.95811e-06 |
1.558e+01 |
X-ray |
|
2.68654e-03 |
4.637e-02 |
X-ray |
|
2.82847e-03 |
2.183e-02 |
X-ray |
|
2.00395e-02 |
3.633e-01 |
X-ray |
|
2.01865e-02 |
6.878e-01 |
X-ray |
|
2.26708e-02 |
5.849e-02 |
X-ray |
|
2.26963e-02 |
1.137e-01 |
X-ray |
|
2.31321e-02 |
1.163e-02 |
X-ray |
|
2.31362e-02 |
2.247e-02 |
X-ray |
|
3.26600e-02 |
2.548e-02 |
Gamma |
|
4.20800e-02 |
7.020e-02 |
Gamma |
|
7.47800e-02 |
4.784e-01 |
Gamma |
|
8.40000e-02 |
5.200e-01 |
Gamma |
|
1.26150e-01 |
7.800e-02 |
Gamma |
|
1.58870e-01 |
1.664e-02 |
Gamma |
|
3.35214e-05 |
6.164e+00 |
Auger electron |
|
1.10596e-04 |
3.502e-01 |
Auger electron |
|
1.18189e-04 |
1.505e+00 |
Auger electron |
|
2.60365e-04 |
3.685e+00 |
Auger electron |
|
3.07822e-04 |
2.405e-02 |
Auger electron |
|
2.26685e-03 |
1.424e+00 |
Auger electron |
|
2.60806e-03 |
2.640e-01 |
Auger electron |
|
2.97243e-03 |
1.342e-02 |
Auger electron |
|
9.46900e-03 |
2.071e-01 |
Conversion electron |
|
1.69094e-02 |
2.092e-01 |
Auger electron |
|
1.88890e-02 |
1.027e-01 |
Conversion electron |
|
1.95952e-02 |
8.191e-02 |
Auger electron |
|
2.92688e-02 |
2.314e-02 |
Conversion electron |
|
2.95085e-02 |
1.000e-02 |
Conversion electron |
|
2.96555e-02 |
1.317e-02 |
Conversion electron |
|
5.15890e-02 |
1.406e-01 |
Conversion electron |
|
6.08090e-02 |
2.578e-01 |
Conversion electron |
|
7.13888e-02 |
1.338e-02 |
Conversion electron |
|
8.06088e-02 |
2.934e-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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