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Isotopes of Copper

List, data and properties of all known isotopes of Copper as well as radioactive decay products and intermediate products.

 

Copper isotopes

All atomic nuclei of the chemical element copper are summarized under copper isotopes; these consist of an atomic nucleus with 29 protons and in the uncharged state of 29 electrons. The difference between the individual copper isotopes lies in the number of neutrons in the nucleus.

 

Naturally Occurring Copper Isotopes

Natural copper deposits are composed of the stable isotopes Cu-63 and Cu-65. In addition, 27 radioisotopes are known.

The following table provides information about the natural isotopic composition of copper:

Atomic Mass maQuantityHalf-lifeSpin
Copper
Isotopic mixture
63,546 u100 %
Isotope 63Cu62,929598(4) u69,15(15) %stable3/2-
Isotope 65Cu64,927790(5) u30,85(15) %stable3/2-

 

Isotope Table: Copper

 

Atomic Properties

Isotope
Nuclide
ZANNameAtomic Mass
[Nuclear Mass]
{Mass Excess}
Spin I
(h/2π)
μParent
123456789
53Cu295324Copper-5352.98575(54) u
[52.9698416 u]
{-13.27379 MeV}
(3/2-)
54Cu295425Copper-5453.97701(43) u
[53.9611016 u]
{-21.41505 MeV}
3+
55Cu295526Copper-5554.96604(17) u
[54.9501316 u]
{-31.63354 MeV}
3/2-
56Cu295627Copper-5655.958515(16) u
[55.9426066 u]
{-38.64303 MeV}
(4+)
57Cu295728Copper-5756.9492118(6) u
[56.9333034 u]
{-47.3089 MeV}
3/2-+2.582(7)57Zn
58Cu295829Copper-5857.9445324(6) u
[57.928624 u]
{-51.66774 MeV}
1++0.52(8)58Zn
59Cu295930Copper-5958.9394968(6) u
[58.9235884 u]
{-56.35837 MeV}
3/2-+1.8931(9)59Zn
60Cu296031Copper-6059.9373639(17) u
[59.9214555 u]
{-58.34515 MeV}
2++1.2200(5)60Zn
61Cu296132Copper-6160.9334574(10) u
[60.917549 u]
{-61.98403 MeV}
3/2-+2.1107(5)61Zn
62Cu296233Copper-6261.9325949(7) u
[61.9166865 u]
{-62.78745 MeV}
1+-0.3800(4)62Zn
63Cu296334Copper-6362.929598(4) u
[62.9136896 u]
{-65.57904 MeV}
3/2-+2.2259(4)63Zn
63Ni
64Cu296435Copper-6463.9297639(5) u
[63.9138555 u]
{-65.42451 MeV}
1+-0.2166(4)64Zn
64Ni
65Cu296536Copper-6564.927790(5) u
[64.9118816 u]
{-67.26318 MeV}
3/2-2.3844(4)65Zn
65Ni
66Cu296637Copper-6665.9288688(7) u
[65.9129604 u]
{-66.25829 MeV}
1+-0.2826(8)66Ni
66mCu296637Copper-66m65.9288688(7) u
[65.9129604 u]
{-66.25829 MeV}
(6)-+1.038(3)
67Cu296738Copper-6766.9277295(10) u
[66.9118211 u]
{-67.31954 MeV}
3/2-+2.5171(6)67Ni
68Cu296839Copper-6867.9296109(17) u
[67.9137025 u]
{-65.56702 MeV}
1++2.3933(6)68Ni
68mCu296839Copper-68m67.9296109(17) u
[67.9137025 u]
{-65.56702 MeV}
6-+1.1561(6)
69Cu296940Copper-6968.9294293(15) u
[68.9135209 u]
{-65.73618 MeV}
3/2-+2.8383(10)69Ni
69mCu296940Copper-69m68.9294293(15) u
[68.9135209 u]
{-65.73618 MeV}
(13/2+)1.46(16)
70Cu297041Copper-7069.9323921(12) u
[69.9164837 u]
{-62.97635 MeV}
6-+1.3666(5)70Ni
70m1Cu297041Copper-70m169.9323921(12) u
[69.9164837 u]
{-62.97635 MeV}
3--3.3641(15)
70m2Cu297041Copper-70m269.9323921(12) u
[69.9164837 u]
{-62.97635 MeV}
1++1.7779(15)
71Cu297142Copper-7170.9326768(16) u
[70.9167684 u]
{-62.71116 MeV}
3/2(-)+2.2747(8)
71mCu297142Copper-71m70.9326768(16) u
[70.9167684 u]
{-62.71116 MeV}
(19/2-)
72Cu297243Copper-7271.9358203(15) u
[71.9199119 u]
{-59.78301 MeV}
2--1.3487(10)
72Cu297243Copper-7271.9358203(15) u
[71.9199119 u]
{-59.78301 MeV}
(6-)
73Cu297344Copper-7372.9366744(21) u
[72.920766 u]
{-58.98742 MeV}
3/2-+1.7425(9)73Ni
74Cu297445Copper-7473.939875(7) u
[73.9239666 u]
{-56.00608 MeV}
2--1.068(3)74Ni
75Cu297546Copper-7574.9415226(25) u
[74.9256142 u]
{-54.47135 MeV}
5/2(-)+1.0062(13)
75m1Cu297546Copper-75m174.9415226(25) u
[74.9256142 u]
{-54.47135 MeV}
(1/2-,3/2-)
75m2Cu297546Copper-75m274.9415226(25) u
[74.9256142 u]
{-54.47135 MeV}
(1/2-,3/2-)
76Cu297647Copper-7675.945275(7) u
[75.9293666 u]
{-50.97601 MeV}
3--1.0907(15)
76mCu297647Copper-76m75.945275(7) u
[75.9293666 u]
{-50.97601 MeV}
77Cu297748Copper-7776.94780(16) u
[76.9318916 u]
{-48.62399 MeV}
5/2-+1.61(5)
78Cu297849Copper-7877.95223(54) u
[77.9363216 u]
{-44.49747 MeV}
(4-,5-,6-)+0.238(3)
79Cu297950Copper-7978.95519(32) u
[78.9392816 u]
{-41.74025 MeV}
80Cu298051Copper-8079.96114(43) u
[79.9452316 u]
{-36.19786 MeV}
81Cu298152Copper-8180.96627(54) u
[80.9503616 u]
{-31.41929 MeV}
82Cu298253Copper-8281.97282(64) u
[81.9569116 u]
{-25.31801 MeV}

 

Radioactive Decay Properties

IsotopeRadioactive DecayAEExtern
Half-lifeDecay ModeProbabilityEnergy
1101112131415
Cu-53130 nsp → 52Ni?AL
Cu-5475 nsp → 53Ni?AL
Cu-5540 msβ+55Ni
p → 54Ni
EC, p 54Co

?
15(4) %
13.70(16) MeV

AL
Cu-5693(3) msβ+56Ni
p → 54Ni
< 100 %
0.40(12) %
15.265(15) MeV
AL
Cu-57196.3(7) msEC/β+57Ni100 %8.7749(8) MeVAL
Cu-583.204(7) sEC/β+58Ni100 %8.5610(7) MeVAL
Cu-5981.5(5) sEC/β+59Ni100 %4.7984(7) MeVAL
Cu-6023.7(4) minEC/β+60Ni100 %6.1280(17) MeVAL
Cu-613.339(8) hEC/β+61Ni100 %2.2378(10) MeVAL
Cu-629.67(3) minEC/β+62Ni100 %3.9589(8) MeVAL
Cu-63stableAL
Cu-6412.701(2) hβ-64Zn
EC/β+64Ni
38.5(3) %
61.5(3) %
0.5795(6) MeV
1.6744(7) MeV
AL
Cu-65stableAL
Cu-665.120(14) minβ-66Zn100 %2.6409(9) MeVAL
Cu-66m600(20) ns1154.2(14) keV
Cu-6761.83(12) hβ-67Zn100 %0.5608(8) MeVAL
Cu-6830.9(6) sβ-68Zn100 %4.4401(18) MeVAL
Cu-68m3.75(5) minIso → 68Cu
β-68Zn
86(2) %
14(2) %

721.26(8) keVAL
Cu-692.85(15) minβ-69Zn100 %2.6816(16) MeVAL
Cu-69m357(2) ns27420(7) keV
Cu-7044.5(2) sβ-70Zn100 %6.588(4) MeVAL
Cu-70m133(2) sβ-70Zn
Iso → 70Cu
52(9) %
48(9) %

101.1(3) keVAL
Cu-70m26.6(2) sβ-70Zn
Iso → 70Cu
93.2(9) %
6.8(9) %

242.6(5) keVAL
Cu-7119.4(16) sβ-71Zn100 %4.618(3) MeVAL
Cu-71m0.271(14) μs2755.7(6) keV
Cu-726.63(3) sβ-72Zn100 %8.3625(26) MeVAL
Cu-72m176(3) μs270.3 keV
Cu-734.2(3) sβ-73Zn
β-, n → 72Zn
100 %
?
6.6060(27) MeV
AL
Cu-741.63(5) sβ-74Zn
β-, n → 73Zn
100 %
?
9.751(7) MeV
1.516(6) MeV
AL
Cu-751.224(3) sβ-75Zn
β-, n → 74Zn
96.5 %
3.5(6) %
8.088(3) MeV
3.214(3) MeV
AL
Cu-75m1310(8) nsIso → 75Cu100 %61.7(4) keV
Cu-75m2149(6) nsIso → 75Cu100 %66.2(4) keV
Cu-76641(6) msβ-76Zn
β-, n → 75Zn
97 %
3(2) %
11.327(7) MeV
3.512(17) MeV
AL
Cu-76m1.27(30) sβ-76Zn100 %+y keVAL
Cu-77467.9(21) msβ-77Zn
β-, n → 76Zn
69.7 %
30.3(20) %
10.16(15) MeV
5.61(15)
AL
Cu-78335(11) msβ-78Zn
β-, n → 77Zn
35
65(8) %
12.99(50) MeV
6.22(50) MeV
AL
Cu-79241.0(32) msβ-79Zn
β-, n → 78Zn
β-, 2n → 77Zn
34 %
66(12) %
?
11.69(30) MeV
7.67(30) MeV
AL
Cu-80113.6 msβ-80Zn
β-, n → 79Zn
β-, 2n → 78Zn
100 %
?
?
15.45(40) MeV
9.16(40) MeV
AL
Cu-8173.2(68) msβ-81Zn
β-, n → 80Zn
β-, 2n → 79Zn
100 %
?
?
14.78(59) MeV
12.16(50) MeV
AL
Cu-8233 msβ-82Zn
β-, n → 81Zn
β-, 2n → 80Zn
100 %
?
?
16.99(60) MeV
12.81(60) MeV
AL

 

Notes (related to the columns):

1 - nuclide, isotope symbol.
2 - Z = number of protons (atomic number).
3 - Mass number A.
4 - N = number of neutrons.
5 - Identification of the Copper isotope.
6 - Relative atomic mass of the Copper isotope (isotopic mass including electrons) and the mass of the atomic nucleus in square brackets (nuclear mass, nuclide mass without electrons), each related to 12C = 12.00000 [2]. In addition, the mass excess is given in MeV.
7 - Nuclear spin I, unit: h/2π.
8 - Nuclear magnetic moment μmag.
9 - Source nuclides: Possible, assumed or actual source nuclides (mother nuclides, parent nuclides). If applicable, the corresponding decay modes can be found in the data for the respective starting nuclide.
10 - Decay: Half-live of the Copper isotope (a = years; ; d = days; h = hours; min = minutes; s = seconds).
11 - Decay: type of decay into the respective daughter nuclides with n = neutron emission; p = proton emission; α = alpha decay; β- = beta minus decay with electron emission; EC = electron capture; β+ = positron emission; ε = β+ and/or EC; Iso = isomeric transition; CD = cluster decay; SF = spontaneous decay.
12 - Decay percentage in percent (%).
13 - Decay energy; Particle energy related to decay type.
14 - AE = Excitation energy for metastable nuclei.
15 - Other information and notes: AL = Adopted Levels (link to external data [1]).

Miscellaneous:

()- Numbers in brackets: uncertainty to represent the spread of the reported value.
~ - Theoretical values or systematic trends.
  - unlisted-: Nuclides that have already been mentioned in the literature but for some reason can no longer be found in the current nuclide tables because their discovery e.g. has not confirmed.

 

NMR active Copper nuclides

Nuclide
quantity 1)
spin
Nuclear magnetic
moment
μ/μN
Gyromagnetic
ratio
107 rad T-1 s-1
Quadrupole
moment
Q fm-2
Resonant
frequency
v0 bei 1 T
Relative
sensitivity
H0 = const.
v0 = const. 2)
63Cu
69,15(15) %
3/2-
+2,2259(4)7,1088-22,0(15)11,31880,09393
1,3292
65Cu
30,85(15) %
3/2-
2,3844(4)7,6104- 20,4(14)12,10270,11484
1,4213

1) Quantity Percentage of natural occurrence.

2) Related to 1H = 1,000.

 

Radiation Protection

According to the Radiation Protection Ordinance (StrlSchV 2018, Germany), the following values (columns 1 to 7) apply to the handling of Copper radionuclides:

NuclideLimit ValueHASS limitSCDaughter NuclidesHalf-life
Cu-60105 Bq10 Bq/g23.7 min
Cu-61106 Bq10 Bq/g3.3 h
Cu-64106 Bq100 Bq/g0,3 TBq10 Bq cm-212.7 h
Cu-67106 Bq100 Bq/g0,7 TBq61.9 h

(HASS = High-Activity Sealed Radioactive Sources; SC = surface contamination)

 

Literature Sources and References

Properties of the Copper nucleides

[1] - NuDat: National Nuclear Data Center, Brookhaven National Laboratory, based on ENSDF and the Nuclear Wallet Cards.

[2] - G. Audi et. al.: The NUBASE evaluation of nuclear and decay properties. Nuclear Physics, (2003), DOI 10.1016/j.nuclphysa.2003.11.001.

[3] - Live Chart of Nuclides. Nuclear structure and decay data.

Copper: NMR properties - 63Cu-NMR, 65Cu-NMR

[4] - N. J. Stone: Table of nuclear magnetic dipole and electric quadrupole moments. Atomic Data and Nuclear Data Tables, (2005), DOI 10.1016/j.adt.2005.04.001.

[5] - Pekka Pyykkö: Year-2008 nuclear quadrupole moments. Molecular Physics, (2008), DOI 10.1080/00268970802018367.

[6] - Pekka Pyykkö: Year-2017 nuclear quadrupole moments. Molecular Physics, (2018), DOI 10.1080/00268976.2018.1426131.

[7] - N. J. Stone: Table of recommended nuclear magnetic dipole moments. IAEA, (2019).

More sources:

[8] - Isotopic abundances, atomic weights and isotopic masses: see respective keyword.

[9] - Moritz Bigalke:
Copper and zinc stable isotope ratios as tracers of biogeochemical processes, sources and transport of Cu and Zn in soils.
In: Dissertation Biogeochemie, Universität Mainz, (2010), DOI https://nbn-resolving.de/urn:nbn:de:hebis:77-24170.

 


Category: Isotopes

Last update: 05.07.2020



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