Copper-65

Properties and data of the isotope ⁶⁵Cu.

Content

General data

Name of the isotope:Copper-65; Cu-65Symbol:⁶⁵Cu or 6529CuMass number A:65 (= number of nucleons)Atomic number Z:29 (= number of protons)Neutrons N:36Isotopic mass:64.927790(5) u (atomic weight of Copper-65)Nuclide mass:64.9118816 u (calculated nuclear mass without electrons)Mass excess:-67.26318 MeVMass defect:0.61107290400001 u (per nucleus)Nuclear binding energy:569.21074364 MeV (per nucleus)
8.75708836 MeV (average binding energy per nucleon)Separation energy:S_N = 9.9104(7) MeV (first neutron)
S_P = 7.4537(7) MeV (first proton)Half-life:stableSpin and parity:
(nuclear angular momentum)3/2-Magnetic dipole moment:μ(μ_N) = 2.3844(4)Charge radius:3.9022(14) femtometer fmYear of discovery:1923

Parent Nuclides

Direct parent isotopes are: ⁶⁵Zn, ⁶⁵Ni.

Occurrence

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

	Atomic Mass m_a	Quantity	Half-life	Spin
Copper Isotopic mixture	63.546 u	100 %
Isotope ⁶³Cu	62.929598(4) u	69.15(15) %	stable	3/2-
Isotope ⁶⁵Cu	64.927790(5) u	30.85(15) %	stable	3/2-

NMR data

Nuclear magnetic properties of the NMR active Nuclide ⁶⁵Cu

Isotope:⁶⁵Cu-NMRQuantity:30.85(15) %Spin:3/2-Nuclearmagnetic moment
μ/μ_N:2.3844(4)Gyromagnetic ratio γ:7.6104 · 10⁷ rad T^-1 s^-1Nuclear g-factor:g_l = 1.5896Quadrupole moment Q:- 0.204(14) barn (100 fm²)Resonance frequency:v₀ = 12.1027 at 1 TRelative Sensitivity:0.11484 (H₀ = const.)
1.4213 (v₀ = const.)
[related to ¹H = 1.000]

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 36) and isobaric (same nucleon number A = 65) with Copper-65. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 36	Isobar A = 65
19	⁵⁵K
20	⁵⁶Ca
21	⁵⁷Sc
22	⁵⁸Ti
23	⁵⁹V	⁶⁵V
24	⁶⁰Cr	⁶⁵Cr
25	⁶¹Mn	⁶⁵Mn
26	⁶²Fe	⁶⁵Fe
27	⁶³Co	⁶⁵Co
28	⁶⁴Ni	⁶⁵Ni
29	⁶⁵Cu	⁶⁵Cu
30	⁶⁶Zn	⁶⁵Zn
31	⁶⁷Ga	⁶⁵Ga
32	⁶⁸Ge	⁶⁵Ge
33	⁶⁹As	⁶⁵As
34	⁷⁰Se	⁶⁵Se
35	⁷¹Br
36	⁷²Kr
37	⁷³Rb
38	⁷⁴Sr