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Radionuclide Dosimetric Data Sheets
Gallium-73
Summary data
General
Classification
Isotope: Ga-73
Atomic number (Z): 31
Mass number (A): 73
Neutron number (N): 42
Radioactive decay
Decay modes: β-
Half-life: 4.86 [h]
Decay constant: 3.9617e-05 [1/s]
Daughters: Ge-73 (100.0%)
Radioactive daughters: None
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.49989 [MeV]
Mean photon energy: 0.35203 [MeV]
Air kerma rate constant, Γ10: 1.592e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 1.592e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 8.009e-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-:
8.009e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 5.640e-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/Ga-73 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/Ga-73 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/Ga-73 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/Ga-73 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.21056e-05 |
1.360e+01 |
X-ray |
|
1.18461e-03 |
1.118e-02 |
X-ray |
|
9.81159e-03 |
1.611e-01 |
X-ray |
|
9.84420e-03 |
3.127e-01 |
X-ray |
|
1.09376e-02 |
2.083e-02 |
X-ray |
|
1.09420e-02 |
4.069e-02 |
X-ray |
|
5.34500e-02 |
1.032e-01 |
Gamma |
|
2.97320e-01 |
7.980e-01 |
Gamma |
|
3.25700e-01 |
1.117e-01 |
Gamma |
|
7.39420e-01 |
4.229e-02 |
Gamma |
|
7.67800e-01 |
1.436e-02 |
Gamma |
|
1.06510e+00 |
1.277e-02 |
Gamma |
|
1.45293e-01 |
7.122e-02 |
Beta |
|
4.46609e-01 |
7.023e-02 |
Beta |
|
4.59013e-01 |
7.775e-01 |
Beta |
|
5.91144e-01 |
6.925e-02 |
Beta |
|
1.41916e-05 |
6.538e+00 |
Auger electron |
|
5.28777e-05 |
2.389e+00 |
Auger electron |
|
8.92180e-05 |
2.808e-01 |
Auger electron |
|
1.07748e-03 |
1.988e+00 |
Auger electron |
|
1.13154e-03 |
4.853e-02 |
Auger electron |
|
2.20400e-03 |
2.601e-01 |
Conversion electron |
|
8.52330e-03 |
3.709e-01 |
Auger electron |
|
9.66388e-03 |
1.015e-01 |
Auger electron |
|
1.18687e-02 |
2.660e-02 |
Conversion electron |
|
1.20156e-02 |
2.203e-01 |
Conversion electron |
|
1.20482e-02 |
3.897e-01 |
Conversion electron |
|
1.31460e-02 |
9.538e-02 |
Conversion electron |
|
4.23830e-02 |
7.515e-01 |
Conversion electron |
|
5.20477e-02 |
9.075e-02 |
Conversion electron |
|
5.22272e-02 |
1.191e-02 |
Conversion electron |
|
5.33250e-02 |
1.757e-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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