Gallium-60

Properties and data of the isotope ⁶⁰Ga.

Contents

See also: List of individual Gallium isotopes (and general data sources).

General data

Name of the isotope:Gallium-60; Ga-60Symbol:⁶⁰Ga or 6031GaMass number A:60 (= number of nucleons)Atomic number Z:31 (= number of protons)Neutrons N:29Nucleon pairing (Z - N):odd - oddNuclear ratio (N/Z ratio):0.93548387096774 (= neutron-proton ratio)Neutron excess (N-Z):-2Isotopic mass:59.95750(21) u (atomic weight of Gallium-60)Nuclide mass:59.9404946 u (calculated nuclear mass without electrons)Mass excess:-39.58849 MeVMass defect:0.536358556 u (per nucleus)Nuclear binding energy:499.61477676 MeV (per nucleus)
8.32691295 MeV (average binding energy per nucleon)Separation energy:S_N = 13.90(26) MeV (first neutron)Half-life:70(13) msDecay constant λ:9.9021025794278 s^-1Specific activity α:1.010709432929 × 10⁺²³ Bq g^-1
2731647116026.5 Ci g^-1Spin and parity:
(nuclear angular momentum)(2+)Mirror nucleus:Copper-60Year of discovery:1995

Radioactive Decay

Half-life T_½ = 70(13) ms respectively 7.0 × 10^-2 seconds s.

Decay mode	Daughter	Probability	Decay energy
EC/β⁺	⁶⁰Zn	98.4(7) %	14.58(29) MeV
β⁺, p	⁵⁹Cu	1.6(7) %
β⁺, α	⁵⁶Ni	0.023(20) %

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 29) and isobaric (same nucleon number A = 60) with Gallium-60. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 29	Isobar A = 60
13	⁴²Al
14	⁴³Si
15	⁴⁴P
16	⁴⁵S
17	⁴⁶Cl
18	⁴⁷Ar
19	⁴⁸K
20	⁴⁹Ca
21	⁵⁰Sc	⁶⁰Sc
22	⁵¹Ti	⁶⁰Ti
23	⁵²V	⁶⁰V
24	⁵³Cr	⁶⁰Cr
25	⁵⁴Mn	⁶⁰Mn
26	⁵⁵Fe	⁶⁰Fe
27	⁵⁶Co	⁶⁰Co
28	⁵⁷Ni	⁶⁰Ni
29	⁵⁸Cu	⁶⁰Cu
30	⁵⁹Zn	⁶⁰Zn
31	⁶⁰Ga	⁶⁰Ga
32	⁶¹Ge	⁶⁰Ge
33	⁶²As
34	⁶³Se