Isotopes of copper

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Copper (Cu) has two stable isotopes, ⁶³Cu and ⁶⁵Cu, along with numerous radioisotopes. The vast majority of radioisotopes have half lives on the order of minutes or less; the longest lived, ⁶⁷Cu, has a half life of 61.8 hours.
Standard atomic mass: 63.546(3) amu

[edit] Table

nuclide symbol	Z(p)	N(n)	isotopic mass (u)	half-life	nuclear spin	representative isotopic composition (mole fraction)	range of natural variation (mole fraction)
nuclide symbol	excitation energy			half-life	nuclear spin	representative isotopic composition (mole fraction)	range of natural variation (mole fraction)
⁵²Cu	29	23	51.99718(28)#		(3+)#
⁵³Cu	29	24	52.98555(28)#	<300 ns	(3/2-)#
⁵⁴Cu	29	25	53.97671(23)#	<75 ns	(3+)#
⁵⁵Cu	29	26	54.96605(32)#	40# ms [>200 ns]	3/2-#
⁵⁶Cu	29	27	55.95856(15)#	93(3) ms	(4+)
⁵⁷Cu	29	28	56.949211(17)	196.3(7) ms	3/2-
⁵⁸Cu	29	29	57.9445385(17)	3.204(7) s	1+
⁵⁹Cu	29	30	58.9394980(8)	81.5(5) s	3/2-
⁶⁰Cu	29	31	59.9373650(18)	23.7(4) min	2+
⁶¹Cu	29	32	60.9334578(11)	3.333(5) h	3/2-
⁶²Cu	29	33	61.932584(4)	9.673(8) min	1+
⁶³Cu	29	34	62.9295975(6)	STABLE	3/2-	0.6915(15)	0.68983-0.69338
⁶⁴Cu	29	35	63.9297642(6)	12.700(2) h	1+
⁶⁵Cu	29	36	64.9277895(7)	STABLE	3/2-	0.3085(15)	0.30662-0.31017
⁶⁶Cu	29	37	65.9288688(7)	5.120(14) min	1+
⁶⁷Cu	29	38	66.9277303(13)	61.83(12) h	3/2-
⁶⁸Cu	29	39	67.9296109(17)	31.1(15) s	1+
^68mCu	721.6(7) keV			3.75(5) min	(6-)
⁶⁹Cu	29	40	68.9294293(15)	2.85(15) min	3/2-
^69mCu	2741.8(10) keV			360(30) ns	(13/2+)
⁷⁰Cu	29	41	69.9323923(17)	44.5(2) s	(6-)
^70m1Cu	101.1(3) keV			33(2) s	(3-)
^70m2Cu	242.6(5) keV			6.6(2) s	1+
⁷¹Cu	29	42	70.9326768(16)	19.4(14) s	(3/2-)
^71mCu	2756(10) keV			271(13) ns	(19/2-)
⁷²Cu	29	43	71.9358203(15)	6.6(1) s	(1+)
^72mCu	270(3) keV			1.76(3) µs	(4-)
⁷³Cu	29	44	72.936675(4)	4.2(3) s	(3/2-)
⁷⁴Cu	29	45	73.939875(7)	1.594(10) s	(1+,3+)
⁷⁵Cu	29	46	74.94190(105)	1.224(3) s	(3/2-)#
⁷⁶Cu	29	47	75.945275(7)	641(6) ms	(3,5)
^76mCu	0(200)# keV			1.27(30) s	(1,3)
⁷⁷Cu	29	48	76.94785(43)#	469(8) ms	3/2-#
⁷⁸Cu	29	49	77.95196(43)#	342(11) ms
⁷⁹Cu	29	50	78.95456(54)#	188(25) ms	3/2-#
⁸⁰Cu	29	51	79.96087(64)#	100# ms [>300 ns]

[edit] Notes

The precision of the isotope abundances and atomic mass is limited through variations. The given ranges should be applicable to any normal terrestrial material.
Values marked # are not purely derived from experimental data, but at least partly from systematic trends. Spins with weak assignment arguments are enclosed in parentheses.
Uncertainties are given in concise form in parentheses after the corresponding last digits. Uncertainty values denote one standard deviation, except isotopic composition and standard atomic mass from IUPAC which use expanded uncertainties.

[edit] References

Isotope masses from Ame2003 Atomic Mass Evaluation by G. Audi, A.H. Wapstra, C. Thibault, J. Blachot and O. Bersillon in Nuclear Physics A729 (2003).
Isotopic compositions and standard atomic masses from Atomic weights of the elements. Review 2000 (IUPAC Technical Report). Pure Appl. Chem. Vol. 75, No. 6, pp. 683-800, (2003) and Atomic Weights Revised (2005).
Half-life, spin, and isomer data selected from these sources. Editing notes on this article's talk page.
- Audi, Bersillon, Blachot, Wapstra. The Nubase2003 evaluation of nuclear and decay properties, Nuc. Phys. A 729, pp. 3-128 (2003).
- National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the NuDat 2.1 database (retrieved Sept. 2005).
- David R. Lide (ed.), Norman E. Holden in CRC Handbook of Chemistry and Physics, 85th Edition, online version. CRC Press. Boca Raton, Florida (2005). Section 11, Table of the Isotopes.