Talk:Isotopes of europium/Archive 1

Data 2003
This article is part of 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). &mdash; 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. &mdash; 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 63 67 A   |Eu-130  |1.1(5) ms                  |2+# 63 67 B   |Eu-130  |0.9(+5-3) ms               |(1+) 63 67 C   |Eu-130  |0.9 ms                     | 63 68 AB  |Eu-131  |17.8(19) ms                |3/2+ 63 68 C   |Eu-131  |~26. ms                   | 63 69 A   |Eu-132  |100# ms                    | 63 69 B   |Eu-132  |200# ms                    | 63 70 A   |Eu-133  |200# ms                    |11/2-# 63 70 B   |Eu-133  |~1 s                       | 63 71 ABC |Eu-134  |0.5(2) s                   | 63 72 A   |Eu-135  |1.5(2) s                   |11/2-# 63 72 BC  |Eu-135  |1.5(2) s                   | 63 73 AB  |Eu-136  |3.3(3) s                   |(7+) 63 73 C   |Eu-136  |~3.9 s                     |1+ 63 73 A   |Eu-136m |3.8(3) s                   |(3+)             |0(500)# keV 63 73 E   |Eu-136m |3.8(3) s                   |(3+)             |Y keV 63 73 D   |Eu-136m |3.3(3) s                   |(7+)             |X keV 63 73 C   |Eu-136m |~3.2 s                     |7+ 63 74 A   |Eu-137  |8.4(5) s                   |11/2-# 63 74 B   |Eu-137  |11(2) s                    |(11/2-) 63 74 C   |Eu-137  |11. s                     |11/2- 63 75 AB  |Eu-138  |12.1(6) s                  |(6-) 63 75 C   |Eu-138  |12. s                     |7+ 63 76 AB  |Eu-139  |17.9(6) s                  |(11/2)- 63 76 C   |Eu-139  |18. s                     | 63 77 AB  |Eu-140  |1.51(2) s                  |1+ 63 77 C   |Eu-140  |1.51 s                     |1- 63 77 A   |Eu-140m |125(2) ms                  |5-#              |210(15) keV 63 77 E   |Eu-140m |125(2) ms                  |(5-)             |185.3+X keV 63 77 C   |Eu-140m |0.125 s                    | 63 78 AB  |Eu-141  |40.7(7) s                  |5/2+ 63 78 C   |Eu-141  |40. s                     |5/2+ 63 78 AE  |Eu-141m |2.7(3) s                   |11/2-            |96.45(7) keV 63 78 C   |Eu-141m |3.0 s                      |11/2- 63 79 AC  |Eu-142  |2.36(10) s                 |1+ 63 79 B   |Eu-142  |2.34(12) s                 |1+ 63 79 A   |Eu-142m |1.223(8) min               |8-               |460(30) keV 63 79 E   |Eu-142m |1.223(8) min               |8-               |0+X keV 63 79 C   |Eu-142m |1.22 min                   |8- 63 80 AB  |Eu-143  |2.59(2) min                |5/2+ 63 80 C   |Eu-143  |2.62 min                   |5/2+ 63 80 AD  |Eu-143m |50.0(5) µs                 |11/2-            |389.51(4) keV 63 81 ABC |Eu-144  |10.2(1) s                  |1+ 63 81 AD  |Eu-144m |1.0(1) µs                  |(8-)             |1127.6(6) keV 63 82 ABC |Eu-145  |5.93(4) d                  |5/2+ 63 82 A   |Eu-145m |490 ns                     |11/2-            |716.0(3) keV 63 82 D   |Eu-145m |490(30) ns                 |11/2-            |716.0(3) keV 63 83 AB  |Eu-146  |4.61(3) d                  |4- 63 83 C   |Eu-146  |4.57 d                     |4- 63 83 AD  |Eu-146m |235(3) µs                  |9+               |666.37(16) keV 63 84 AB  |Eu-147  |24.1(6) d                  |5/2+ 63 84 C   |Eu-147  |24.4 d                     |5/2+ 63 85 ABC |Eu-148  |54.5(5) d                  |5- 63 86 ABC |Eu-149  |93.1(4) d                  |5/2+ 63 87 AB  |Eu-150  |36.9(9) a                  |5(-) 63 87 C   |Eu-150  |36. a                     |5- 63 87 A   |Eu-150m |12.8(1) h                  |0-               |42.1(5) keV 63 87 E   |Eu-150m |12.8(1) h                  |0-               |42.1 keV 63 87 C   |Eu-150m |12.8 h                     |0- 63 88 ABC |Eu-151  |5×1018 a                   |5/2+ 63 88 AD  |Eu-151m |58.9(5) µs                 |11/2-            |196.245(10) keV 63 89 A   |Eu-152  |13.537(6) a                |3- 63 89 BC  |Eu-152  |13.506(6) a                |3- 63 89 AE  |Eu-152m1|9.3116(13) h               |0-               |45.5998(4) keV 63 89 C   |Eu-152m1|9.30 h                     |0- 63 89 D   |Eu-152m2|0.94(8) µs                 |1-               |65.2969(4) keV 63 89 D   |Eu-152m3|165(10) ns                 |1+               |78.2331(4) keV 63 89 D   |Eu-152m4|384(10) ns                 |4+               |89.8496(4) keV 63 89 AE  |Eu-152m5|96(1) min                  |8-               |147.86(10) keV 63 89 C   |Eu-152m5|1.60 h                     |8- 63 90 ABC |Eu-153  |STABLE                     |5/2+ 63 91 A   |Eu-154  |8.593(4) a                 |3- 63 91 BC  |Eu-154  |8.590(3) a                 |3- 63 91 AE  |Eu-154m1|46.3(4) min                |(8-)             |145.3(3) keV 63 91 C   |Eu-154m1|46.1 min                   |8- 63 91 D   |Eu-154m2|2.2(1) µs                  |2+               |68.1702(4) keV 63 92 AC  |Eu-155  |4.7611(13) a               |5/2+ 63 92 B   |Eu-155  |4.753(14) a                |5/2+ 63 93 AB  |Eu-156  |15.19(8) d                 |0+ 63 93 C   |Eu-156  |15.2 d                     |1+ 63 94 AB  |Eu-157  |15.18(3) h                 |5/2+ 63 94 C   |Eu-157  |15.13 h                    |(5/2+) 63 95 ABC |Eu-158  |45.9(2) min                |(1-) 63 96 AB  |Eu-159  |18.1(1) min                |5/2+ 63 96 C   |Eu-159  |18.1 min                   |(5/2+) 63 97 A   |Eu-160  |38(4) s                    |1(-) 63 97 B   |Eu-160  |38(4) s                    |1 63 97 C   |Eu-160  |38. s                     |(0-) 63 98 A   |Eu-161  |26(3) s                    |5/2+# 63 98 B   |Eu-161  |26(3) s                    | 63 98 C   |Eu-161  |27. s                     | 63 99 ABC |Eu-162  |10.6(10) s                 | 63 100 A  |Eu-163  |6# s                       |5/2+# 63 100 B  |Eu-163  |6# s                       | 63 101 A  |Eu-164  |2# s                       | 63 101 B  |Eu-164  |~2 s                       | 63 102 A  |Eu-165  |1# s                       |5/2+# 63 102 B  |Eu-165  |~1 s                       | 63 103 A  |Eu-166  |400# ms                    | 63 103 B  |Eu-166  |~0.4 s                     | 63 104 A  |Eu-167  |200# ms                    |5/2+# 63 104 B  |Eu-167  |~0.2                       |s

Femto 12:35, 15 November 2005 (UTC)

What theory?
It was: "151Eu was recently found to be unstable to alpha decay with half-life of $$5_{-3}^{+11}\times 10^{18}$$ yr, in reasonable agreement with theoretical predictions." I have taken the latter part out, because it doesn't say what theory is meant. —Preceding unsigned comment added by Phr en (talk • contribs) 09:02, 29 February 2008 (UTC)