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Radionuclide Dosimetric Data Sheets
Gallium-64
Summary data
General
Classification
Isotope: Ga-64
Atomic number (Z): 31
Mass number (A): 64
Neutron number (N): 33
Radioactive decay
Decay modes: β+, Electron capture
Half-life: 2.627 [m]
Decay constant: 4.3976e-03 [1/s]
Daughters: Zn-64 (100.0%)
Radioactive daughters: None
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 1.70307 [MeV]
Mean photon energy: 3.37257 [MeV]
Air kerma rate constant, Γ10: 7.238e-17 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 1.102e-16 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 2.729e-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-:
2.729e-13 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 5.403e-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-64 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-64 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-64 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-64 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.63539e-05 |
1.172e-01 |
X-ray |
|
5.11000e-01 |
1.953e+00 |
Annihilation photon |
|
7.56520e-01 |
1.334e-02 |
Gamma |
|
8.07850e-01 |
1.454e-01 |
Gamma |
|
9.18780e-01 |
8.602e-02 |
Gamma |
|
9.91510e-01 |
4.600e-01 |
Gamma |
|
1.27637e+00 |
5.934e-02 |
Gamma |
|
1.38727e+00 |
1.256e-01 |
Gamma |
|
1.45559e+00 |
1.992e-02 |
Gamma |
|
1.56647e+00 |
2.217e-02 |
Gamma |
|
1.61754e+00 |
1.753e-02 |
Gamma |
|
1.62574e+00 |
1.113e-02 |
Gamma |
|
1.79943e+00 |
3.818e-02 |
Gamma |
|
1.99580e+00 |
1.697e-02 |
Gamma |
|
2.19525e+00 |
9.844e-02 |
Gamma |
|
2.27042e+00 |
2.226e-02 |
Gamma |
|
2.37432e+00 |
7.452e-02 |
Gamma |
|
3.36587e+00 |
1.398e-01 |
Gamma |
|
3.42506e+00 |
4.324e-02 |
Gamma |
|
3.79510e+00 |
1.302e-02 |
Gamma |
|
7.41245e-01 |
1.145e-02 |
Positron |
|
1.04606e+00 |
3.586e-02 |
Positron |
|
1.21992e+00 |
6.076e-02 |
Positron |
|
1.24791e+00 |
2.610e-01 |
Positron |
|
1.29707e+00 |
2.719e-02 |
Positron |
|
1.33272e+00 |
2.769e-01 |
Positron |
|
2.87427e+00 |
2.888e-01 |
Positron |
|
5.67790e-05 |
4.241e-02 |
Auger electron |
|
9.29524e-04 |
3.185e-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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