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Isotopes of germanium



Germanium (Ge)
Standard atomic mass: 72.64(1) u

Additional recommended knowledge

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)
excitation energy
58Ge 32 26 57.99101(34)# 0+
59Ge 32 27 58.98175(30)# 7/2-#
60Ge 32 28 59.97019(25)# 30# ms 0+
61Ge 32 29 60.96379(32)# 39(12) ms (3/2-)#
62Ge 32 30 61.95465(15)# 129(35) ms 0+
63Ge 32 31 62.94964(21)# 142(8) ms (3/2-)#
64Ge 32 32 63.94165(3) 63.7(25) s 0+
65Ge 32 33 64.93944(11) 30.9(5) s (3/2)-
66Ge 32 34 65.93384(3) 2.26(5) h 0+
67Ge 32 35 66.932734(5) 18.9(3) min 1/2-
67m1Ge 18.20(5) keV 13.7(9) µs 5/2-
67m2Ge 751.70(6) keV 110.9(14) ns 9/2+
68Ge 32 36 67.928094(7) 270.95(16) d 0+
69Ge 32 37 68.9279645(14) 39.05(10) h 5/2-
69m1Ge 86.765(14) keV 5.1(2) µs 1/2-
69m2Ge 397.944(18) keV 2.81(5) µs 9/2+
70Ge 32 38 69.9242474(11) STABLE 0+ 0.2038(18)
71Ge 32 39 70.9249510(11) 11.43(3) d 1/2-
71mGe 198.367(10) keV 20.40(17) ms 9/2+
72Ge 32 40 71.9220758(18) STABLE 0+ 0.2731(26)
72mGe 691.43(4) keV 444.2(8) ns 0+
73Ge 32 41 72.9234589(18) STABLE 9/2+ 0.0776(8)
73m1Ge 13.2845(15) keV 2.92(3) µs 5/2+
73m2Ge 66.726(9) keV 499(11) ms 1/2-
74Ge 32 42 73.9211778(18) STABLE 0+ 0.3672(15)
75Ge 32 43 74.9228589(18) 82.78(4) min 1/2-
75m1Ge 139.69(3) keV 47.7(5) s 7/2+
75m2Ge 192.18(7) keV 216(5) ns 5/2+
76Ge 32 44 75.9214026(18) 1.78(8)E+21 a 0+ 0.0783(7)
77Ge 32 45 76.9235486(18) 11.30(1) h 7/2+
77mGe 159.70(10) keV 52.9(6) s 1/2-
78Ge 32 46 77.922853(4) 88(1) min 0+
79Ge 32 47 78.9254(1) 18.98(3) s (1/2)-
79mGe 185.95(4) keV 39.0(10) s (7/2+)#
80Ge 32 48 79.92537(3) 29.5(4) s 0+
81Ge 32 49 80.92882(13) 7.6(6) s 9/2+#
81mGe 679.13(4) keV 7.6(6) s (1/2+)
82Ge 32 50 81.92955(26) 4.55(5) s 0+
83Ge 32 51 82.93462(21)# 1.85(6) s (5/2+)#
84Ge 32 52 83.93747(32)# 0.947(11) s 0+
85Ge 32 53 84.94303(43)# 535(47) ms 5/2+#
86Ge 32 54 85.94649(54)# >150 ns 0+
87Ge 32 55 86.95251(54)# 0.14# s 5/2+#
88Ge 32 56 87.95691(75)# >=300 ns 0+
89Ge 32 57 88.96383(97)# >150 ns 3/2+#

Notes

  • 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.

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 2.3 database (retrieved Aug. 2007).
    • 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.


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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Isotopes_of_germanium". A list of authors is available in Wikipedia.
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