This is an archive of past discussions about Isotopes of cobalt. Do not edit the contents of this page. If you wish to start a new discussion or revive an old one, please do so on the current talk page.
This article is part of Wikipedia:Wikiproject Isotopes. Please keep style and phrasings consistent across the set of pages. For later reference and improved reliability, data from all considered multiple sources is collected here. References are denoted by these letters:
(A) G. Audi, O. Bersillon, J. Blachot, A.H. Wapstra. The Nubase2003 evaluation of nuclear and decay properties, Nuc. Phys. A 729, pp. 3-128 (2003). — Where this source indicates a speculative value, the # mark is also applied to values with weak assignment arguments from other sources, if grouped together. An asterisk after the A means that a comment of some importance may be available in the original.
(B) National Nuclear Data Center, Brookhaven National Laboratory, information extracted from the NuDat 2.1 database. (Retrieved Sept. 2005, from the code of the popup boxes).
(C) 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. — The CRC uses rounded numbers with implied uncertainties, where this concurs with the range of another source it is treated as exactly equal in this comparison.
(D) More specific level data from reference B's Levels and Gammas database.
(E) Same as B but excitation energy replaced with that from D.
Z N refs symbol half-life spin excitation energy
27 20 A |Co-47 | |7/2-#
27 21 A |Co-48 | |6+#
27 22 A |Co-49 |<35 ns |7/2-#
27 22 BC |Co-49 |<35 ns |
27 23 AB |Co-50 |44(4) ms |(6+)
27 23 C |Co-50 |44. ms |
27 24 A |Co-51 |60# ms [>200 ns] |7/2-#
27 24 B |Co-51 |>200 ns |(7/2-)
27 24 C |Co-51 |>0.2 µs |
27 25 AB |Co-52 |115(23) ms |(6+)
27 25 C |Co-52 |0.12 s |
27 25 A* |Co-52m |104(11)# ms |2+# |380(100)# keV
27 26 AC |Co-53 |242(8) ms |7/2-#
27 26 B |Co-53 |240(9) ms |(7/2-)
27 26 A |Co-53m |247(12) ms |(19/2-) |3197(29) keV
27 26 E |Co-53m |247(12) ms |(19/2-) |3190 keV
27 26 C |Co-53m |0.25 s |19/2-
27 27 AC |Co-54 |193.23(14) ms |0+
27 27 B |Co-54 |193.28(7) ms |0+
27 27 AE |Co-54m |1.48(2) min |(7)+ |197.4(5) keV
27 27 C |Co-54m |1.46 min |7+
27 28 ABC |Co-55 |17.53(3) h |7/2-
27 29 A |Co-56 |77.23(3) d |4+
27 29 B |Co-56 |77.233(27) d |4+
27 29 C |Co-56 |77.3 d |4+
27 30 AB |Co-57 |271.74(6) d |7/2-
27 30 C |Co-57 |271.8 d |7/2-
27 31 AB |Co-58 |70.86(6) d |2+
27 31 C |Co-58 |70.88 d |2+
27 31 AE |Co-58m1 |9.04(11) h |5+ |24.95(6) keV
27 31 C |Co-58m1 |9.1 h |5+
27 31 AD |Co-58m2 |10.4(3) µs |4+ |53.15(7) keV
27 32 ABC |Co-59 |STABLE |7/2-
27 33 AC |Co-60 |5.2713(8) a |5+
27 33 B |Co-60 |1925.28(14) d |5+
27 33 AE |Co-60m |10.467(6) min |2+ |58.59(1) keV
27 33 C |Co-60m |10.47 min |2+
27 34 ABC |Co-61 |1.650(5) h |7/2-
27 35 ABC |Co-62 |1.50(4) min |2+
27 35 AE |Co-62m |13.91(5) min |5+ |22(5) keV
27 35 C |Co-62m |13.9 min |5+
27 36 A |Co-63 |26.9(4) s |7/2-
27 36 B |Co-63 |27.4(5) s |7/2-
27 36 C |Co-63 |27.5 s |7/2-
27 37 ABC |Co-64 |0.30(3) s |1+
27 38 AB |Co-65 |1.20(6) s |(7/2)-
27 38 C |Co-65 |1.14 s |(7/2)-
27 39 A |Co-66 |194(17) ms |(3+)
27 39 B |Co-66 |0.18(1) s |(3+)
27 39 C |Co-66 |0.25 s |
27 39 D |Co-66m |0.233(17) s |(3+) |0 keV
27 39 A |Co-66m1 |1.21(1) µs |(5+) |175(3) keV
27 39 C |Co-66m1 |1.2 µs |(5+)
27 39 A |Co-66m2 |>100 µs |(8-) |642(5) keV
27 39 C |Co-66m2 |>0.1 ms |(8-)
27 40 AB |Co-67 |0.425(20) s |(7/2-)#
27 40 C |Co-67 |0.43 s |
27 41 A |Co-68 |200(21) ms |(7-)
27 41 B |Co-68 |0.199(21) s |(7-)
27 41 C |Co-68 |0.19 s |
27 41 A |Co-68m |1.6(3) s |(3+) |150(150)# keV
27 41 E |Co-68m |1.6(3) s |(3+) |X keV
27 42 A |Co-69 |227(13) ms |7/2-#
27 42 B |Co-69 |0.22(2) s |7/2-
27 42 C |Co-69 |0.20 s |
27 43 A |Co-70 |125(7) ms |(6-,7-)
27 43 B |Co-70 |119(6) ms |(6-)
27 43 C |Co-70 |0.09 s |
27 43 A |Co-70m |500(180) ms |(3+) |200(200)# keV
27 43 E |Co-70m |0.50(18) s |(3+) |0+X keV
27 44 A |Co-71 |97(2) ms |7/2-#
27 44 B |Co-71 |79(5) ms |
27 44 C |Co-71 |0.21 s |
27 45 AC |Co-72 |90(20) ms |
27 45 B |Co-72 |62(3) ms |(6-,7-)
27 46 A |Co-73 |80# ms [>300 ns] |7/2-#
27 46 B |Co-73 |41(4) ms |
27 46 C |Co-73 |>0.15 µs |
27 47 A |Co-74 |50# ms [>300 ns] |
27 47 B |Co-74 |>150 ns |0+
27 47 C |Co-74 |>0.15 µs |
27 48 A |Co-75 |40# ms [>300 ns] |7/2-#
27 48 B |Co-75 |>150 ns |(7/2-)
27 48 C |Co-75 |>0.15 µs |
