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Radionuclide Dosimetric Data Sheets
Cadmium-104
Summary data
General
Classification
Isotope: Cd-104
Atomic number (Z): 48
Mass number (A): 104
Neutron number (N): 56
Radioactive decay
Decay modes: Electron capture
Half-life: 57.7 [m]
Decay constant: 2.0022e-04 [1/s]
Daughters: Ag-104m (100.0%)
Radioactive daughters: Ag-104m
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.03059 [MeV]
Mean photon energy: 0.25126 [MeV]
Air kerma rate constant, Γ10: 1.874e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 1.874e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 4.901e-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-:
4.901e-15 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 4.026e-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/Cd-104 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-104 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/Cd-104 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.20774e-05 |
1.055e+01 |
X-ray |
|
2.97344e-03 |
3.791e-02 |
X-ray |
|
3.14510e-03 |
1.847e-02 |
X-ray |
|
2.19609e-02 |
2.825e-01 |
X-ray |
|
2.21389e-02 |
5.323e-01 |
X-ray |
|
2.48888e-02 |
4.641e-02 |
X-ray |
|
2.49204e-02 |
9.018e-02 |
X-ray |
|
2.54258e-02 |
1.824e-02 |
X-ray |
|
6.66000e-02 |
2.397e-02 |
Gamma |
|
8.35000e-02 |
4.700e-01 |
Gamma |
|
5.59000e-01 |
6.345e-02 |
Gamma |
|
6.25700e-01 |
2.162e-02 |
Gamma |
|
7.09300e-01 |
1.951e-01 |
Gamma |
|
3.78152e-05 |
3.844e+00 |
Auger electron |
|
1.26919e-04 |
1.067e+00 |
Auger electron |
|
1.34897e-04 |
2.402e-01 |
Auger electron |
|
3.19034e-04 |
2.600e+00 |
Auger electron |
|
3.72219e-04 |
1.355e-02 |
Auger electron |
|
2.49422e-03 |
9.927e-01 |
Auger electron |
|
2.90228e-03 |
2.152e-01 |
Auger electron |
|
3.32826e-03 |
1.237e-02 |
Auger electron |
|
1.84717e-02 |
1.365e-01 |
Auger electron |
|
2.14605e-02 |
5.516e-02 |
Auger electron |
|
4.11110e-02 |
2.826e-02 |
Conversion electron |
|
5.80110e-02 |
2.897e-01 |
Conversion electron |
|
7.97166e-02 |
3.348e-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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