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Radionuclide Dosimetric Data Sheets
Gallium-65
Summary data
General
Classification
Isotope: Ga-65
Atomic number (Z): 31
Mass number (A): 65
Neutron number (N): 34
Radioactive decay
Decay modes: β+, Electron capture
Half-life: 15.2 [m]
Decay constant: 7.6003e-04 [1/s]
Daughters: Zn-65 (100.0%)
Radioactive daughters: Zn-65
Dosimetric constants
Mean alpha energy: 0.0 [MeV]
Mean electron energy: 0.81581 [MeV]
Mean photon energy: 1.16497 [MeV]
Air kerma rate constant, Γ10: 8.563e-18 [Gy·m2/Bq·s]
Air kerma coefficient, Kair: 4.311e-17 [Gy·m2/Bq·s]
Equilibrium dose constant for weakly-penetrating radiations (α and/or
electrons), Δwp: 1.307e-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-:
1.307e-13 [Gy·kg/Bq·s]
Equilibrium dose constant for photons, Δp: 1.866e-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-65 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-65 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-65 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-65 Summary Spectrum.csv
|
Energy [MeV] |
Yield [#/nt] if > 0.01 |
Radiation type |
|
1.63568e-05 |
2.453e+00 |
X-ray |
|
8.57190e-03 |
6.404e-02 |
X-ray |
|
8.59639e-03 |
1.247e-01 |
X-ray |
|
9.53181e-03 |
1.548e-02 |
X-ray |
|
5.39300e-02 |
4.860e-02 |
Gamma |
|
6.12000e-02 |
1.139e-01 |
Gamma |
|
1.15090e-01 |
5.400e-01 |
Gamma |
|
1.53000e-01 |
8.856e-02 |
Gamma |
|
2.06900e-01 |
2.538e-02 |
Gamma |
|
5.11000e-01 |
1.785e+00 |
Annihilation photon |
|
7.51800e-01 |
8.100e-02 |
Gamma |
|
7.68900e-01 |
1.269e-02 |
Gamma |
|
9.32200e-01 |
1.793e-02 |
Gamma |
|
5.12397e-01 |
1.881e-02 |
Positron |
|
5.93133e-01 |
6.436e-02 |
Positron |
|
6.37221e-01 |
1.782e-02 |
Positron |
|
8.94371e-01 |
1.010e-01 |
Positron |
|
9.36932e-01 |
5.743e-01 |
Positron |
|
9.65369e-01 |
9.902e-02 |
Positron |
|
5.68468e-05 |
8.856e-01 |
Auger electron |
|
8.96298e-05 |
1.166e-01 |
Auger electron |
|
9.29250e-04 |
6.721e-01 |
Auger electron |
|
7.48697e-03 |
1.911e-01 |
Auger electron |
|
8.45550e-03 |
4.877e-02 |
Auger electron |
|
4.43076e-02 |
2.752e-01 |
Conversion electron |
|
5.15776e-02 |
4.922e-02 |
Conversion electron |
|
5.27456e-02 |
2.349e-02 |
Conversion electron |
|
5.29040e-02 |
1.227e-02 |
Conversion electron |
|
1.05468e-01 |
3.320e-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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