Gallium-69

Properties and data of the isotope ⁶⁹Ga.

Content

General data

Name of the isotope:Gallium-69; Ga-69Symbol:⁶⁹Ga or 6931GaMass number A:69 (= number of nucleons)Atomic number Z:31 (= number of protons)Neutrons N:38Isotopic mass:68.925574(8) u (atomic weight of Gallium-69)Nuclide mass:68.9085686 u (calculated nuclear mass without electrons)Mass excess:-69.32737 MeVMass defect:0.6462688 u (per nucleus)Nuclear binding energy:601.99550959 MeV (per nucleus)
8.7245726 MeV (average binding energy per nucleon)Separation energy:S_N = 10.3131(19) MeV (first neutron)
S_P = 6.6097(14) MeV (first proton)Half-life:stableSpin and parity:
(nuclear angular momentum)3/2-Magnetic dipole moment:μ(μ_N) = +2.01502(6)Charge radius:3.9973(17) femtometer fmYear of discovery:1923

Parent Nuclides

Direct parent isotopes are: ⁶⁹Ge, ⁶⁹Zn.

Occurrence

Comparison of the natural Gallium isotopes including isotopic abundance (mole fraction of the isotope mixture in percent):

	Atomic Mass m_a	Quantity	Half-life	Spin
Gallium Isotopic mixture	69.723 u	100 %
Isotope ⁶⁹Ga	68.925574(8) u	60.108(50) %	stable	3/2-
Isotope ⁷¹Ga	70.924703(6) u	39.892(50) %	stable	3/2-

NMR data

Nuclear magnetic properties of the NMR active Nuclide ⁶⁹Ga

Isotope:⁶⁹Ga-NMRQuantity:60.108(50) %Spin:3/2-Nuclearmagnetic moment
μ/μ_N:+2.01502(6)Gyromagnetic ratio γ:6.4389 · 10⁷ rad T^-1 s^-1Nuclear g-factor:g_l = 1.3433466666667Quadrupole moment Q:+0.171(2) barn (100 fm²)Line width parameter (factor):l = 389.88 fm⁴Resonance frequency:v₀ = 10.2478 at 1 TRelative Sensitivity:0.06971 (H₀ = const.)
1.2035 (v₀ = const.)
[related to ¹H = 1.000]

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 38) and isobaric (same nucleon number A = 69) with Gallium-69. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 38	Isobar A = 69
20	⁵⁸Ca
21	⁵⁹Sc
22	⁶⁰Ti
23	⁶¹V
24	⁶²Cr
25	⁶³Mn	⁶⁹Mn
26	⁶⁴Fe	⁶⁹Fe
27	⁶⁵Co	⁶⁹Co
28	⁶⁶Ni	⁶⁹Ni
29	⁶⁷Cu	⁶⁹Cu
30	⁶⁸Zn	⁶⁹Zn
31	⁶⁹Ga	⁶⁹Ga
32	⁷⁰Ge	⁶⁹Ge
33	⁷¹As	⁶⁹As
34	⁷²Se	⁶⁹Se
35	⁷³Br	⁶⁹Br
36	⁷⁴Kr	⁶⁹Kr
37	⁷⁵Rb
38	⁷⁶Sr
39	⁷⁷Y
40	⁷⁸Zr