Talk:Isotopes of lanthanum

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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
 57  60 AB  |La-117  |23.5(26) ms                |(3/2+,3/2-)
 57  60 C   |La-117  |23 ms                      |3/2+
 57  60 A   |La-117m |10(5) ms                   |(9/2+)           |138(15) keV
 57  60 E   |La-117m |10(5) ms                   |(9/2+)           |151(12) keV
 57  61 A   |La-118  |200# ms                    |
 57  61 B   |La-118  |~1 s                       |
 57  62 A   |La-119  |1# s                       |11/2-#
 57  62 B   |La-119  |~2 s                       |
 57  63 ABC |La-120  |2.8(2) s                   |
 57  64 A   |La-121  |5.3(2) s                   |11/2-#
 57  64 BC  |La-121  |5.3(2) s                   |
 57  65 AC  |La-122  |8.7(7) s                   |
 57  65 B   |La-122  |8.6(5) s                   |
 57  66 A   |La-123  |17(3) s                    |11/2-#
 57  66 BC  |La-123  |17(3) s                    |
 57  67 A   |La-124  |29.21(17) s                |(7-,8-)
 57  67 B   |La-124  |<1 s                       |low
 57  67 C   |La-124  |30. s                      |(7+)
 57  67 A   |La-124m |21(4) s                    |low(+#)          |100(100)# keV
 57  67 E   |La-124m |29(1) s                    |(7,8-)           |0+X keV
 57  67 D   |La-124m |<1 s                       |                 |0+Y keV
 57  68 A*  |La-125  |64.8(12) s                 |(11/2-)
 57  68 B   |La-125  |64.8(12) s                 |
 57  68 C   |La-125  |1.2 min                    |11/2-
 57  68 A   |La-125m |390(40) ms                 |(3/2+)           |107.0(1) keV
 57  68 E   |La-125m |0.4(2) s                   |                 |107.0(10) keV
 57  68 C   |La-125m |0.39 s                     |
 57  69 A   |La-126  |54(2) s                    |(5)(+#)
 57  69 B   |La-126  |<50 s                      |(0-,1,2-)
 57  69 C   |La-126  |54. s                      |
 57  69 A   |La-126m |20(20) s                   |(0-,1-,2-)       |210(410) keV
 57  69 E   |La-126m |54(2) s                    |(5+)             |0+X keV
 57  69 D   |La-126m |<50 s                      |(0-,1,2-)        |0+Z keV
 57  69 C   |La-126m |<50. s                     |
 57  70 AB  |La-127  |5.1(1) min                 |(11/2-)
 57  70 C   |La-127  |3.8 min                    |3/2+
 57  70 AE  |La-127m |3.7(4) min                 |(3/2+)           |14.8(12) keV
 57  71 AB  |La-128  |5.18(14) min               |(5+)
 57  71 C   |La-128  |5.0 min                    |(5-)
 57  71 A   |La-128m |<1.4 min                   |(1+,2-)          |100(100)# keV
 57  71 E   |La-128m |<1.4 min                   |(1+,2-)          |0+X keV
 57  72 ABC |La-129  |11.6(2) min                |3/2+
 57  72 AE  |La-129m |560(50) ms                 |11/2-            |172.1(4) keV
 57  72 C   |La-129m |0.56 s                     |(11/2-)
 57  73 AB  |La-130  |8.7(1) min                 |3(+)
 57  73 C   |La-130  |8.7 min                    |3+
 57  74 ABC |La-131  |59(2) min                  |3/2+
 57  74 AD  |La-131m |170(10) µs                 |11/2-            |304.52(24) keV
 57  75 ABC |La-132  |4.8(2) h                   |2-
 57  75 A   |La-132m |24.3(5) min                |6-               |188.18(11) keV
 57  75 E   |La-132m |24.3(5) min                |6-               |188.20(11) keV
 57  75 C   |La-132m |24. min                    |6-
 57  76 ABC |La-133  |3.912(8) h                 |5/2+
 57  77 ABC |La-134  |6.45(16) min               |1+
 57  78 ABC |La-135  |19.5(2) h                  |5/2+
 57  79 ABC |La-136  |9.87(3) min                |1+
 57  79 A   |La-136m |114(3) ms                  |(8)(-#)          |255(9) keV
 57  79 E   |La-136m |114(3) ms                  |(8+)             |230+X keV
 57  80 ABC |La-137  |6(2)E+4 a                  |7/2+
 57  81 AB  |La-138  |1.02(1)E+11 a              |5+
 57  81 C   |La-138  |1.06E+11 a                 |5+
 57  81 AD  |La-138m |116(5) ns                  |(3)+             |72.57(3) keV
 57  82 ABC |La-139  |STABLE                     |7/2+
 57  83 ABC |La-140  |1.6781(3) d                |3-
 57  84 AB  |La-141  |3.92(3) h                  |(7/2+)
 57  84 C   |La-141  |3.90 h                     |7/2+
 57  85 AB  |La-142  |91.1(5) min                |2-
 57  85 C   |La-142  |1.54 h                     |2-
 57  86 AB  |La-143  |14.2(1) min                |(7/2)+
 57  86 C   |La-143  |14.1 min                   |7/2-
 57  87 AB  |La-144  |40.8(4) s                  |(3-)
 57  87 C   |La-144  |40.7 s                     |
 57  88 AB  |La-145  |24.8(20) s                 |(5/2+)
 57  88 C   |La-145  |24. s                      |3/2+
 57  89 AB  |La-146  |6.27(10) s                 |2-
 57  89 C   |La-146  |6.3 s                      |(2-)
 57  89 A   |La-146m |10.0(1) s                  |(6-)             |130(130) keV
 57  89 E   |La-146m |10.0(1) s                  |(6-)             |X keV
 57  89 C   |La-146m |10.0 s                     |(6)
 57  90 AB  |La-147  |4.015(8) s                 |(5/2+)
 57  90 C   |La-147  |4.02 s                     |
 57  91 AB  |La-148  |1.26(8) s                  |(2-)
 57  91 C   |La-148  |1.1 s                      |2-
 57  92 A   |La-149  |1.05(3) s                  |5/2+#
 57  92 B   |La-149  |1.05(3) s                  |(3/2,5/2)
 57  92 C   |La-149  |1.10 s                     |
 57  93 A   |La-150  |510(30) ms                 |(3+)
 57  93 B   |La-150  |0.51(3) s                  |(3-)
 57  93 C   |La-150  |0.51 s                     |
 57  94 A   |La-151  |300# ms [>300 ns]          |5/2+#
 57  94 BC  |La-151  |>150 ns                    |
 57  95 A   |La-152  |200# ms [>300 ns]          |
 57  95 BC  |La-152  |>150 ns                    |
 57  96 A   |La-153  |150# ms [>300 ns]          |5/2+#
 57  96 B   |La-153  |>100 ns                    |
 57  96 C   |La-153  |>0.15 µs                   |
 57  97 A   |La-154  |100# ms                    |
 57  97 B   |La-154  |~0.1 s                     |
 57  98 A   |La-155  |60# ms                     |5/2+#
 57  98 B   |La-155  |~0.06 s                    |

Femto 12:19, 15 November 2005 (UTC)

Talk[edit]

Why is it that decay modes of the isotopes are never listed among the "Isotopes of " pages? this info is available in the source material -- 99.233.186.4 (talk) 02:13, 28 November 2009 (UTC)


Stability data[edit]

71La lanthanum is the first of the 2 + 4 + 4 + 4 = 14 element "lanthanide" series of the periodic table. And 71La Lanthanum is the first element of the accumulative expansion process of the atomic structure beyond the creation of a sixth internal alpha particle on top of a 6 x 6 = 36 area square nucleon structure at 56Ba Barium. This reduces the stability of the structure such that only the isotope 71OELa139 is stable and the isotope 71OOLa138 has a long half-lived (10^E 11.8yr) unstable isotope. However the next lower 2 OE isotopes (71OELa134 and &1OELa132) Are shown to be below the graphical stability trend line for the range of the unstable OE isotopes.WFPM (talk) 19:45, 15 April 2013 (UTC)

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