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Radionuclide Dosimetric Data Sheets
Gallium-72
Summary data
General
Classification
Isotope: Ga-72
Atomic number (Z): 31
Mass number (A): 72
Neutron number (N): 41
Radioactive decay
Decay modes: β-
Half-life: 14.1 [h]
Decay constant: 1.3655e-05 [1/s]
Daughters: Ge-72 (100.0%)
Radioactive daughters: None
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.50596 [MeV]
Mean photon energy: 2.70709 [MeV]
Air kerma rate constant, Γ10: 8.864e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 8.864e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 8.106e-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-:
8.106e-14 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 4.337e-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/Ga-72 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-72 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-72 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-72 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.21070e-05 |
5.349e-02 |
X-ray |
|
6.00950e-01 |
5.537e-02 |
Gamma |
|
6.29960e-01 |
2.477e-01 |
Gamma |
|
7.86440e-01 |
3.204e-02 |
Gamma |
|
8.10200e-01 |
2.008e-02 |
Gamma |
|
8.34030e-01 |
9.563e-01 |
Gamma |
|
8.94250e-01 |
9.879e-02 |
Gamma |
|
9.70550e-01 |
1.104e-02 |
Gamma |
|
1.05069e+00 |
6.914e-02 |
Gamma |
|
1.23086e+00 |
1.454e-02 |
Gamma |
|
1.26010e+00 |
1.128e-02 |
Gamma |
|
1.27676e+00 |
1.565e-02 |
Gamma |
|
1.46400e+00 |
3.548e-02 |
Gamma |
|
1.59668e+00 |
4.236e-02 |
Gamma |
|
1.86109e+00 |
5.250e-02 |
Gamma |
|
2.10950e+00 |
1.042e-02 |
Gamma |
|
2.20166e+00 |
2.592e-01 |
Gamma |
|
2.49098e+00 |
7.679e-02 |
Gamma |
|
2.50779e+00 |
1.278e-01 |
Gamma |
|
2.20679e-01 |
1.497e-01 |
Beta |
|
2.27288e-01 |
2.165e-01 |
Beta |
|
3.45713e-01 |
2.764e-01 |
Beta |
|
3.84841e-01 |
1.866e-02 |
Beta |
|
5.73180e-01 |
8.880e-02 |
Beta |
|
7.78133e-01 |
2.983e-02 |
Beta |
|
1.05910e+00 |
8.481e-02 |
Beta |
|
1.35856e+00 |
1.028e-01 |
Beta |
|
1.41915e-05 |
2.568e-02 |
Auger 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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