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Radionuclide Dosimetric Data Sheets
Cadmium-101
Summary data
General
Classification
Isotope: Cd-101
Atomic number (Z): 48
Mass number (A): 101
Neutron number (N): 53
Radioactive decay
Decay modes: β+, Electron capture
Half-life: 1.36 [m]
Decay constant: 8.4945e-03 [1/s]
Daughters: Ag-101 (100.0%)
Radioactive daughters: Ag-101
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 1.06854 [MeV]
Mean photon energy: 2.4853 [MeV]
Air kerma rate constant, Γ10: 5.948e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 8.934e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 1.712e-13 [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-:
1.712e-13 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 3.982e-13
[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/Cd-101 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/Cd-101 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/Cd-101 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/Cd-101 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.20778e-05 |
4.836e+00 |
X-ray |
|
2.97344e-03 |
1.736e-02 |
X-ray |
|
2.19609e-02 |
1.250e-01 |
X-ray |
|
2.21389e-02 |
2.355e-01 |
X-ray |
|
2.48888e-02 |
2.054e-02 |
X-ray |
|
2.49204e-02 |
3.991e-02 |
X-ray |
|
9.81000e-02 |
4.720e-01 |
Gamma |
|
1.76200e-01 |
5.664e-02 |
Gamma |
|
3.08900e-01 |
2.030e-02 |
Gamma |
|
4.76500e-01 |
1.794e-02 |
Gamma |
|
5.11000e-01 |
1.543e+00 |
Annihilation photon |
|
5.23400e-01 |
5.050e-02 |
Gamma |
|
6.09100e-01 |
1.841e-02 |
Gamma |
|
6.37900e-01 |
2.407e-02 |
Gamma |
|
6.86900e-01 |
4.295e-02 |
Gamma |
|
7.05800e-01 |
1.227e-02 |
Gamma |
|
7.05800e-01 |
1.227e-02 |
Gamma |
|
9.24700e-01 |
6.891e-02 |
Gamma |
|
9.74100e-01 |
1.227e-02 |
Gamma |
|
1.02260e+00 |
2.171e-02 |
Gamma |
|
1.18730e+00 |
2.785e-02 |
Gamma |
|
1.20300e+00 |
4.862e-02 |
Gamma |
|
1.25890e+00 |
8.213e-02 |
Gamma |
|
1.31950e+00 |
1.935e-02 |
Gamma |
|
1.32460e+00 |
1.794e-02 |
Gamma |
|
1.33180e+00 |
2.502e-02 |
Gamma |
|
1.41710e+00 |
5.806e-02 |
Gamma |
|
1.58680e+00 |
1.133e-02 |
Gamma |
|
1.59260e+00 |
1.841e-02 |
Gamma |
|
1.63140e+00 |
2.502e-02 |
Gamma |
|
1.65650e+00 |
1.322e-02 |
Gamma |
|
1.69090e+00 |
3.398e-02 |
Gamma |
|
1.69670e+00 |
4.295e-02 |
Gamma |
|
1.72250e+00 |
1.138e-01 |
Gamma |
|
1.76170e+00 |
1.180e-02 |
Gamma |
|
1.79660e+00 |
1.841e-02 |
Gamma |
|
1.85970e+00 |
4.295e-02 |
Gamma |
|
1.96090e+00 |
2.360e-02 |
Gamma |
|
2.13000e+00 |
1.369e-02 |
Gamma |
|
2.84190e+00 |
1.746e-02 |
Gamma |
|
9.07526e-01 |
3.181e-02 |
Positron |
|
9.25159e-01 |
1.152e-02 |
Positron |
|
1.04531e+00 |
5.714e-02 |
Positron |
|
1.07811e+00 |
1.857e-02 |
Positron |
|
1.10995e+00 |
1.686e-02 |
Positron |
|
1.15424e+00 |
1.381e-02 |
Positron |
|
1.17050e+00 |
4.143e-02 |
Positron |
|
1.18868e+00 |
6.095e-02 |
Positron |
|
1.20068e+00 |
2.790e-02 |
Positron |
|
1.24908e+00 |
4.705e-02 |
Positron |
|
1.30251e+00 |
1.467e-02 |
Positron |
|
1.37695e+00 |
3.990e-02 |
Positron |
|
1.40515e+00 |
3.514e-02 |
Positron |
|
1.42055e+00 |
1.962e-02 |
Positron |
|
1.43159e+00 |
2.628e-02 |
Positron |
|
1.43906e+00 |
1.381e-02 |
Positron |
|
1.48102e+00 |
1.114e-02 |
Positron |
|
1.56278e+00 |
3.524e-02 |
Positron |
|
1.59187e+00 |
1.419e-02 |
Positron |
|
1.66928e+00 |
1.048e-02 |
Positron |
|
2.00209e+00 |
1.238e-01 |
Positron |
|
3.78290e-05 |
1.760e+00 |
Auger electron |
|
1.27222e-04 |
4.893e-01 |
Auger electron |
|
1.34842e-04 |
1.027e-01 |
Auger electron |
|
3.18975e-04 |
1.193e+00 |
Auger electron |
|
2.49417e-03 |
4.576e-01 |
Auger electron |
|
2.90203e-03 |
9.917e-02 |
Auger electron |
|
1.84717e-02 |
6.041e-02 |
Auger electron |
|
2.06110e-02 |
1.460e-02 |
Conversion electron |
|
2.14605e-02 |
2.441e-02 |
Auger electron |
|
7.26110e-02 |
2.629e-01 |
Conversion electron |
|
9.43166e-02 |
2.754e-02 |
Conversion electron |
|
9.45719e-02 |
1.020e-02 |
Conversion electron |
|
9.47500e-02 |
1.158e-02 |
Conversion electron |
|
1.50711e-01 |
4.363e-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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