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Radionuclide Dosimetric Data Sheets
Gadolinium-153
Summary data
General
Classification
Isotope: Gd-153
Atomic number (Z): 64
Mass number (A): 153
Neutron number (N): 89
Radioactive decay
Decay modes: Electron capture
Half-life: 240.4 [d]
Decay constant: 3.3372e-08 [1/s]
Daughters: Eu-153 (100.0%)
Radioactive daughters: None
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.04376 [MeV]
Mean photon energy: 0.10566 [MeV]
Air kerma rate constant, Γ10: 5.476e-18 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 5.476e-18 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 7.011e-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-:
7.011e-15 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 1.693e-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/Gd-153 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/Gd-153 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/Gd-153 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.42291e-05 |
1.511e+01 |
X-ray |
|
1.02960e-03 |
2.009e-02 |
X-ray |
|
5.80160e-03 |
1.082e-02 |
X-ray |
|
5.83100e-03 |
9.572e-02 |
X-ray |
|
6.45760e-03 |
6.170e-02 |
X-ray |
|
6.82634e-03 |
1.604e-02 |
X-ray |
|
7.47704e-03 |
1.066e-02 |
X-ray |
|
4.09430e-02 |
3.501e-01 |
X-ray |
|
4.15992e-02 |
6.315e-01 |
X-ray |
|
4.69640e-02 |
6.373e-02 |
X-ray |
|
4.70984e-02 |
1.233e-01 |
X-ray |
|
4.82780e-02 |
1.389e-02 |
X-ray |
|
4.83077e-02 |
2.694e-02 |
X-ray |
|
6.96730e-02 |
2.419e-02 |
Gamma |
|
9.74310e-02 |
2.900e-01 |
Gamma |
|
1.03180e-01 |
2.111e-01 |
Gamma |
|
1.58398e-05 |
1.071e+00 |
Auger electron |
|
1.05270e-04 |
7.329e-01 |
Auger electron |
|
1.13007e-04 |
6.520e+00 |
Auger electron |
|
1.79280e-04 |
1.040e+00 |
Auger electron |
|
5.45156e-04 |
2.133e-01 |
Auger electron |
|
8.54130e-04 |
2.222e+00 |
Auger electron |
|
1.02670e-03 |
1.370e-01 |
Auger electron |
|
4.62243e-03 |
8.195e-01 |
Auger electron |
|
5.72414e-03 |
2.823e-01 |
Auger electron |
|
6.86029e-03 |
2.436e-02 |
Auger electron |
|
2.11050e-02 |
1.105e-01 |
Conversion electron |
|
3.36229e-02 |
5.740e-02 |
Auger electron |
|
3.97850e-02 |
2.817e-02 |
Auger electron |
|
4.88630e-02 |
7.433e-02 |
Conversion electron |
|
5.46121e-02 |
3.075e-01 |
Conversion electron |
|
6.16549e-02 |
1.427e-02 |
Conversion electron |
|
9.51620e-02 |
4.027e-02 |
Conversion electron |
|
1.01711e-01 |
1.006e-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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