Gallium: isotope data

Gallium has two stable isotopes and both are used in nuclear medicine and physics. Ga-69 is used for production of the radioisotope Ge-68. This isotope is used for so-called Ge-68/Ga-68 generators. The Ga-68 that is created from the decay of Ge-68 is used as a PET isotope. Ga-71 has been used to study the behavior of solar neutrinos and it is also used in NMR studies.

Naturally occurring isotopes

This table shows information about naturally occuring isotopes, their atomic masses, their natural abundances, their nuclear spins, and their magnetic moments. Further data for radioisotopes (radioactive isotopes) of gallium are listed (including any which occur naturally) below.
69Ga 68.925580 (3) 60.108 (9) 3/2 2.01659
71Ga 70.9247005 (25) 39.892 (9) 3/2 2.56227


Radiosotope data

Further data for naturally occuring isotopes of gallium are listed above. This table gives information about some radiosotopes of gallium, their masses, their half-lives, their modes of decay, their nuclear spins, and their nuclear magnetic moments.
64Ga 63.936838 2.63 m EC to 64Zn 0
65Ga 64.9394 15.2 m EC to 65Zn 3/2
66Ga 65.931592 9.5 h EC to 66Zn 0
67Ga 66.928205 3.260 d EC to 67Zn 3/2 1.8507
68Ga 67.927983 1.130 h EC to 68Zn 1 0.01175
70Ga 69.926027 21.1 m EC to 70Zn; β- to 70Ge 1
72Ga 71.926372 14.10 h β- to 72Ge 3 -0.13224
73Ga 72.92517 74.87 h β- to 73Ge 3/2
74Ga 73.92694 8.1 m β- to 74Ge 3
75Ga 74.92650 2.10 m β- to 75Ge 3/2

Sheffield ChemPuter isotope pattern calculator


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NMR Properties of gallium

Common reference compound: Ga(NO3)3/D2O.

Table of NMR-active nucleus propeties of gallium
  Isotope 1 Isotope 2 Isotope 3
Isotope 69Ga 71Ga
Natural abundance /% 60.108 39.892
Spin (I) 3/2 3/2
Frequency relative to 1H = 100 (MHz) 24.001253 30.496576
Receptivity, DP, relative to 1H = 1.00 0.0419 0.0571
Receptivity, DC, relative to 13C = 1.00 239 326
Magnetogyric ratio, γ (107 rad T‑1 s-1) 6.438855 8.181171
Magnetic moment, μ (μN) 2.603405 3.307871
Nuclear quadrupole moment, Q/millibarn 171(2) 107(1)
Line width factor, 1056 l (m4) 0.038 0.015



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