Copper-63

Properties and data of the isotope ⁶³Cu.

Contents

General Data

Parent Nuclides

NMR Data

Isotones und Isobares

Literature

Copper-63 is a stable, naturally occurring of the chemical element copper, which has 34 neutrons in its atomic nucleus in addition to the element-specific 29 protons; the sum of the number of these atomic nucleus building blocks results in a mass number of 63.

According to a report from 1923, Cu-63 was discovered by evaluating the mass spectra recorded from Copper(I) chloride using the accelerated anode ray method [1].

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

General data

Name of the isotope:Copper-63; Cu-63Symbol:⁶³Cu or 6329CuMass number A:63 (= number of nucleons)Atomic number Z:29 (= number of protons)Neutrons N:34Nucleon pairing (Z - N):odd - evenNuclear ratio (N/Z ratio):1.1724137931034 (= neutron-proton ratio)Neutron excess (N-Z):5Isotopic mass:62.9295971(5) u (atomic weight of Copper-63)Nuclide mass:62.9136887 u (calculated nuclear mass without electrons)Mass excess:-65.57988 MeVMass defect:0.591935972 u (per nucleus)Nuclear binding energy:551.3848063 MeV (per nucleus)
8.75213978 MeV (average binding energy per nucleon)Separation energy:S_N = 10.8636(5) MeV (first neutron)
S_P = 6.12240(6) MeV (first proton)Half-life:stableSpin and parity:
(nuclear angular momentum)3/2-Magnetic dipole moment:μ(μ_N) = +2.2259(4)Charge radius:3.8823(15) femtometer fmMirror nucleus:Selenium-63Year of discovery:1923

Parent Nuclides

Direct parent isotopes are: ⁶³Zn, ⁶³Ni.

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	62.9295971(5) u	69.15(15) %	stable	3/2-
Isotope ⁶⁵Cu	64.9277895(7) u	30.85(15) %	stable	3/2-

NMR data

Nuclear magnetic properties and parameters of the NMR active Nuclide ⁶³Cu

Isotope:⁶³Cu-NMRQuantity:69.15(15) %Spin:3/2-Nuclearmagnetic moment
μ/μ_N:+2.2259(4)Gyromagnetic ratio γ:7.1088 · 10⁷ rad T^-1 s^-1
11.31401 MHz T^-1Nuclear g-factor:g_l = 1.4839333333333Quadrupole moment Q:-0.220(15) barn (100 fm²)Line width parameter (factor):l = 645.33 fm⁴Resonance frequency:v₀ = 11.3188 MHz at 1 TRelative Sensitivity:[related to ¹H = 1.000]:
0.09393 (H₀ = const.)
1.3292 (v₀ = const.)
0.0650 (at natural abundance)
relative receptivity as compared to ¹³C:
382 (at natural abundance)
552 (enriched)Reference compound:
(conditions)IUPAC recommendation: Pure tetrakis(acetonitrile)copper(I) perchlorate [Cu(CH₃CN)₄][ClO₄] mixed with a small amount (< 10 %) of benzene-d6 C₆D₆.Frequency ratio:Ξ(⁶³Cu) = 26.515473 % [based on the reference substance]Chemical shift range:ca. 1100 ppm [-300 to 800]

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 34) and isobaric (same nucleon number A = 63) with Copper-63. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 34	Isobar A = 63
17	⁵¹Cl
18	⁵²Ar
19	⁵³K
20	⁵⁴Ca
21	⁵⁵Sc	⁶³Sc
22	⁵⁶Ti	⁶³Ti
23	⁵⁷V	⁶³V
24	⁵⁸Cr	⁶³Cr
25	⁵⁹Mn	⁶³Mn
26	⁶⁰Fe	⁶³Fe
27	⁶¹Co	⁶³Co
28	⁶²Ni	⁶³Ni
29	⁶³Cu	⁶³Cu
30	⁶⁴Zn	⁶³Zn
31	⁶⁵Ga	⁶³Ga
32	⁶⁶Ge	⁶³Ge
33	⁶⁷As	⁶³As
34	⁶⁸Se	⁶³Se
35	⁶⁹Br
36	⁷⁰Kr
37	⁷¹Rb