This is an archive of past discussions about Isotopes of erbium. 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
68 75 A |Er-143 |200# ms |9/2-#
68 75 B |Er-143 |0.2# s |
68 76 A |Er-144 |400# ms [>200 ns] |0+
68 76 B |Er-144 |>=200 ns |0+
68 77 A |Er-145 |900(300) ms |1/2+#
68 77 B |Er-145 |0.9(3) s |(11/2-)
68 77 C |Er-145 |0.9 s |
68 78 AB |Er-146 |1.7(6) s |0+
68 78 C |Er-146 |~1.7 s |
68 79 A |Er-147 |~2.5 s |(1/2+)
68 79 B |Er-147 |2.5(2) s |(11/2-)
68 79 C |Er-147 |2.5 s |
68 79 A |Er-147m |2.5(2) s |(11/2-) |100(50)# keV
68 79 E |Er-147m |~2.5 s |(1/2+) |0+X keV
68 80 AB |Er-148 |4.6(2) s |0+
68 80 C |Er-148 |4.5 s |
68 81 AB |Er-149 |4(2) s |(1/2+)
68 81 C |Er-149 |10.7 s |1/2+
68 81 AE |Er-149m1|8.9(2) s |(11/2-) |741.8(2) keV
68 81 C |Er-149m1|10. s |11/2-
68 81 D |Er-149m2|0.61(8) µs |(19/2+) |2611.1(3) keV
68 81 D |Er-149m3|4.8(1) µs |(27/2-) |3242.7+X keV
68 82 AB |Er-150 |18.5(7) s |0+
68 82 C |Er-150 |18. s |0+
68 83 AB |Er-151 |23.5(13) s |(7/2-)
68 83 C |Er-151 |23. s |7/2-
68 83 AE |Er-151m1|580(20) ms |(27/2-) |2585.5(6) keV
68 83 D |Er-151m2|0.42(5) µs |(67/2,69/2,71/2) |10286+X keV
68 84 AB |Er-152 |10.3(1) s |0+
68 84 C |Er-152 |10.2 s |0+
68 85 A |Er-153 |37.1(2) s |7/2(-)
68 85 B |Er-153 |37.1(2) s |(7/2-)
68 85 C |Er-153 |37.1 s |
68 86 ABC |Er-154 |3.73(9) min |0+
68 87 AB |Er-155 |5.3(3) min |7/2-
68 87 C |Er-155 |5.3 min |(7/2-)
68 88 ABC |Er-156 |19.5(10) min |0+
68 89 AB |Er-157 |18.65(10) min |3/2-
68 89 C |Er-157 |25. min |3/2-
68 89 AD |Er-157m |76(6) ms |(9/2+) |155.4(3) keV
68 90 AB |Er-158 |2.29(6) h |0+
68 90 C |Er-158 |2.2 h |0+
68 91 ABC |Er-159 |36(1) min |3/2-
68 91 AD |Er-159m1|337(14) ns |9/2+ |182.602(24) keV
68 91 AD |Er-159m2|590(60) ns |11/2- |429.05(3) keV
68 92 ABC |Er-160 |28.58(9) h |0+
68 93 ABC |Er-161 |3.21(3) h |3/2-
68 93 AD |Er-161m |7.5(7) µs |11/2- |396.44(4) keV
68 94 A |Er-162 |STABLE [>140E+12 a] |0+
68 94 BC |Er-162 |STABLE |0+
68 95 ABC |Er-163 |75.0(4) min |5/2-
68 95 AD |Er-163m |580(100) ns |(11/2-) |445.5(6) keV
68 96 ABC |Er-164 |STABLE |0+
68 97 ABC |Er-165 |10.36(4) h |5/2-
68 98 ABC |Er-166 |STABLE |0+
68 99 ABC |Er-167 |STABLE |7/2+
68 99 AE |Er-167m |2.269(6) s |1/2- |207.801(5) keV
68 99 C |Er-167m |2.27 s |1/2-
68 100 ABC |Er-168 |STABLE |0+
68 101 AC |Er-169 |9.40(2) d |1/2-
68 101 B |Er-169 |9.392(18) d |1/2-
68 102 A |Er-170 |STABLE [>320E+15 a] |0+
68 102 BC |Er-170 |STABLE |0+
68 103 ABC |Er-171 |7.516(2) h |5/2-
68 103 AD |Er-171m |210(10) ns |1/2- |198.6(1) keV
68 104 AB |Er-172 |49.3(3) h |0+
68 104 C |Er-172 |2.05 d |
68 105 A |Er-173 |1.434(17) min |(7/2-)
68 105 BC |Er-173 |1.4(1) min |(7/2-)
68 106 AB |Er-174 |3.2(2) min |0+
68 106 C |Er-174 |3.1 min |
68 107 AB |Er-175 |1.2(3) min |(9/2+)
68 107 C |Er-175 |1.2 min |
68 108 A |Er-176 |20# s |0+
68 108 B |Er-176 |~20 s |0+
68 109 A |Er-177 |3# s |1/2-#
68 109 B |Er-177 |~3 s |
