Gallium-59

Properties and data of the isotope ⁵⁹Ga.

Content

General data

Name of the isotope:Gallium-59; Ga-59Symbol:⁵⁹Ga or 5931GaMass number A:59 (= number of nucleons)Atomic number Z:31 (= number of protons)Neutrons N:28Isotopic mass:58.96376(18) u (atomic weight of Gallium-59)Nuclide mass:58.9467546 u (calculated nuclear mass without electrons)Mass excess:-33.75734 MeVMass defect:0.52143364000001 u (per nucleus)Nuclear binding energy:485.71230706 MeV (per nucleus)
8.23241198 MeV (average binding energy per nucleon)Separation energy:S_N = 18.29(34) MeV (first neutron)Half-life:43 nsDecay constant λ:16119701.873487 s^-1Specific activity α:1.673708884522 × 10⁺²⁹ Bq g^-1
4.523537525737 × 10⁺¹⁸ Ci g^-1Spin and parity:
(nuclear angular momentum)3/2-~Mirror nucleus:Nickel-59

Radioactive Decay

Half-life T_½ = 43 ns respectively 4.3 × 10^-8 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
p	⁵⁸Zn	?

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 28) and isobaric (same nucleon number A = 59) with Gallium-59. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 28	Isobar A = 59
11	³⁹Na
12	⁴⁰Mg
13	⁴¹Al
14	⁴²Si
15	⁴³P
16	⁴⁴S
17	⁴⁵Cl
18	⁴⁶Ar
19	⁴⁷K
20	⁴⁸Ca
21	⁴⁹Sc	⁵⁹Sc
22	⁵⁰Ti	⁵⁹Ti
23	⁵¹V	⁵⁹V
24	⁵²Cr	⁵⁹Cr
25	⁵³Mn	⁵⁹Mn
26	⁵⁴Fe	⁵⁹Fe
27	⁵⁵Co	⁵⁹Co
28	⁵⁶Ni	⁵⁹Ni
29	⁵⁷Cu	⁵⁹Cu
30	⁵⁸Zn	⁵⁹Zn
31	⁵⁹Ga	⁵⁹Ga
32	⁶⁰Ge	⁵⁹Ge