Talk:Isotopes of iron

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Untitled[edit]

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
 26  19 A   |Fe-45   |4.9(15) ms                 |3/2+#
 26  19 B   |Fe-45   |3.8(+20-8) ms              |(3/2+)
 26  19 C   |Fe-45   |4. ms                      |
 26  20 A   |Fe-46   |9(4) ms                    |0+
 26  20 B   |Fe-46   |12(+4-3) ms                |0+
 26  20 C   |Fe-46   |12. ms                     |
 26  21 A   |Fe-47   |21.8(7) ms                 |7/2-#
 26  21 BC  |Fe-47   |21.8(7) ms                 |
 26  22 AB  |Fe-48   |44(7) ms                   |0+
 26  22 C   |Fe-48   |~44. ms                    |
 26  23 ABC |Fe-49   |70(3) ms                   |(7/2-)
 26  24 AB  |Fe-50   |155(11) ms                 |0+
 26  24 C   |Fe-50   |0.15 s                     |
 26  25 AB  |Fe-51   |305(5) ms                  |5/2-
 26  25 C   |Fe-51   |0.31 s                     |(5/2-)
 26  26 ABC |Fe-52   |8.275(8) h                 |0+
 26  26 AE  |Fe-52m  |45.9(6) s                  |(12+)#           |6.81(13) MeV
 26  26 C   |Fe-52m  |46. s                      |(12+)
 26  27 ABC |Fe-53   |8.51(2) min                |7/2-
 26  27 AE  |Fe-53m  |2.526(24) min              |19/2-            |3040.4(3) keV
 26  27 C   |Fe-53m  |2.6 min                    |19/2-
 26  28 AB  |Fe-54   |STABLE                     |0+
 26  28 C   |Fe-54   |>3.1E+22 a                 |0+
 26  28 AD  |Fe-54m  |364(7) ns                  |10+              |6526.9(6) keV
 26  29 AB  |Fe-55   |2.737(11) a                |3/2-
 26  29 C   |Fe-55   |2.73 a                     |3/2-
 26  30 ABC |Fe-56   |STABLE                     |0+
 26  31 ABC |Fe-57   |STABLE                     |1/2-
 26  32 ABC |Fe-58   |STABLE                     |0+
 26  33 AB  |Fe-59   |44.495(9) d                |3/2-
 26  33 C   |Fe-59   |44.51 d                    |3/2-
 26  34 ABC |Fe-60   |1.5(3)E+6 a                |0+
 26  35 AB  |Fe-61   |5.98(6) min                |3/2-,5/2-
 26  35 C   |Fe-61   |6.0 min                    |
 26  35 A   |Fe-61m  |250(10) ns                 |9/2+#            |861(3) keV
 26  35 D   |Fe-61m  |0.25(1) µs                 |(9/2+)           |861 keV
 26  35 C   |Fe-61m  |0.25 µs                    |(9/2+)
 26  36 ABC |Fe-62   |68(2) s                    |0+
 26  37 AB  |Fe-63   |6.1(6) s                   |(5/2)-
 26  37 C   |Fe-63   |6. s                       |5/2-
 26  38 AB  |Fe-64   |2.0(2) s                   |0+
 26  38 C   |Fe-64   |2.0 s                      |
 26  39 A   |Fe-65   |1.3(3) s                   |1/2-#
 26  39 BC  |Fe-65   |1.3(3) s                   |
 26  39 A   |Fe-65m  |430(130) ns                |(5/2-)           |364(3) keV
 26  39 C   |Fe-65m  |0.4 µs                     |(5/2-)
 26  40 A   |Fe-66   |440(40) ms                 |0+
 26  40 B   |Fe-66   |0.44(6) s                  |0+
 26  40 C   |Fe-66   |0.44 s                     |
 26  41 A   |Fe-67   |394(9) ms                  |1/2-#
 26  41 B   |Fe-67   |0.47(5) s                  |
 26  41 C   |Fe-67   |0.48 s                     |
 26  41 A   |Fe-67m  |64(17) µs                  |(5/2-)           |367(3) keV
 26  41 C   |Fe-67m  |~0.04 ms                   |(5/2-)
 26  42 AB  |Fe-68   |187(6) ms                  |0+
 26  42 C   |Fe-68   |0.15 s                     |
 26  43 AB  |Fe-69   |109(9) ms                  |1/2-#
 26  43 C   |Fe-69   |0.17 s                     |
 26  44 AB  |Fe-70   |94(17) ms                  |0+
 26  44 C   |Fe-70   |>0.15 µs                   |
 26  45 A   |Fe-71   |30# ms [>300 ns]           |7/2+#
 26  45 B   |Fe-71   |>150 ns                    |(7/2+)#
 26  45 C   |Fe-71   |>0.15 µs                   |
 26  46 A   |Fe-72   |10# ms [>300 ns]           |0+
 26  46 B   |Fe-72   |>150 ns                    |0+
 26  46 C   |Fe-72   |>0.15 µs                   |

Femto 13:41, 14 November 2005 (UTC)

Table[edit]

I wanted to merge some articles on specific isotopes by putting their information on the article's table, as those are merely stubs. They have a little bit of information that's not covered in the table, but I don't know how to add that information--Robert Treat (talk) 01:41, 20 May 2010 (UTC).

units??[edit]

Several listings have half-lives with units of 'a'--what is this? Is that supposed to be short for years? I've never seen that unit before when it comes to time. —Preceding unsigned comment added by 69.36.57.3 (talk) 10:20, 7 June 2008 (UTC)

annum (an SI unit). Best regard, Stan J. Klimas (talk) 10:45, 7 June 2008 (UTC)
Oh yeah ? "Annum" is an SI unit ?? [citation needed], funny, it says the opposite if you follow the link.Eregli bob (talk) 17:07, 20 July 2012 (UTC)

Superscript "m"[edit]

Could someone please tell me what the "m" in 53mFe signifies?

Thanks, Nick Beeson (talk) 15:38, 18 November 2008 (UTC)

I just saw this question from 3 years ago. m = metastable = a long-lived excited state. See Nuclear isomer#Metastable isomers. And yes, this really should be explained with the table, in this article and in all the articles Isotopes of element X. Dirac66 (talk) 20:00, 12 November 2011 (UTC)

Iron-56[edit]

This section is to discuss whether Iron-56 should be merged into this article--Robert Treat (talk) 00:56, 21 August 2011 (UTC).

Iron-57m[edit]

The article mentions that Fe-57 is used in Mossbauer spectroscopy. Should the table of iron isotopes not include the Fe-57m state which is the upper energy level of the Mossbauer gamma-ray emission? Dirac66 (talk) 20:06, 12 November 2011 (UTC)