Talk:Isotopes of barium/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 56 58 A   |Ba-114  |530(230) ms                |0+ 56 58 B   |Ba-114  |0.43(+30-15) s             |0+ 56 58 C   |Ba-114  |0.43 s                     | 56 59 AB  |Ba-115  |0.45(5) s                  |(5/2+)# 56 59 C   |Ba-115  |0.45 s                     | 56 60 AB  |Ba-116  |1.3(2) s                   |0+ 56 60 C   |Ba-116  |1.3 s                      | 56 61 A   |Ba-117  |1.75(7) s                  |(3/2)(+#) 56 61 B   |Ba-117  |1.75(7) s                  |(3/2) 56 61 C   |Ba-117  |1.8 s                      |(3/2-) 56 62 AB  |Ba-118  |5.2(2) s                   |0+ 56 62 C   |Ba-118  |5.2 s                      | 56 63 AB  |Ba-119  |5.4(3) s                   |(5/2+) 56 63 C   |Ba-119  |5.4 s                      | 56 64 ABC |Ba-120  |24(2) s                    |0+ 56 65 AB  |Ba-121  |29.7(15) s                 |5/2(+) 56 65 C   |Ba-121  |30. s                     |5/2 56 66 ABC |Ba-122  |1.95(15) min               |0+ 56 67 AB  |Ba-123  |2.7(4) min                 |5/2(+) 56 67 C   |Ba-123  |2.7 min                    | 56 68 AB  |Ba-124  |11.0(5) min                |0+ 56 68 C   |Ba-124  |12. min                   | 56 69 AB  |Ba-125  |3.5(4) min                 |1/2(+#) 56 69 C   |Ba-125  |3.5 min                    |1/2+ 56 69 C   |Ba-125  |8. min                    | 56 70 AB  |Ba-126  |100(2) min                 |0+ 56 70 C   |Ba-126  |1.65 h                     |0+ 56 71 AB  |Ba-127  |12.7(4) min                |1/2+ 56 71 C   |Ba-127  |12.9 min                   |1/2+ 56 71 AE  |Ba-127m |1.9(2) s                   |7/2-             |80.33(12) keV 56 71 C   |Ba-127m |1.9 s                      |7/2- 56 72 ABC |Ba-128  |2.43(5) d                  |0+ 56 73 ABC |Ba-129  |2.23(11) h                 |1/2+ 56 73 A   |Ba-129m |2.16(2) h                  |7/2+#            |8.42(6) keV 56 73 E   |Ba-129m |2.16(2) h                  |7/2+             |8.42(6) keV 56 73 C   |Ba-129m |2.17 h                     |7/2+ 56 74 A   |Ba-130  |STABLE [>4.0E+21 a]        |0+ 56 74 B   |Ba-130  |>=3.5E+14 a                |0+ 56 74 C   |Ba-130  |2.2E+21 a                  |0+ 56 74 A   |Ba-130m |9.54(14) ms                |8-               |2475.12(18) keV 56 74 D   |Ba-130m |9.4(4) ms                  |8-               |2475.12(18) keV 56 74 C   |Ba-130m |9.5 ms                     |8- 56 75 AB  |Ba-131  |11.50(6) d                 |1/2+ 56 75 C   |Ba-131  |11.7 d                     |1/2+ 56 75 AE  |Ba-131m |14.6(2) min                |9/2-             |187.14(12) keV 56 75 C   |Ba-131m |14.6 min                   |9/2- 56 76 A   |Ba-132  |STABLE [>300E+18 a]        |0+ 56 76 B   |Ba-132  |>3.0E+21 a                 |0+ 56 76 C   |Ba-132  |1.3E+21 a                  |0+ 56 77 A   |Ba-133  |10.51(5) a                 |1/2+ 56 77 B   |Ba-133  |3841(7) d                  |1/2+ 56 77 C   |Ba-133  |10.53 a                    |1/2+ 56 77 AE  |Ba-133m |38.9(1) h                  |11/2-            |288.247(9) keV 56 77 C   |Ba-133m |1.621 d                    |11/2- 56 78 ABC |Ba-134  |STABLE                     |0+ 56 79 ABC |Ba-135  |STABLE                     |3/2+ 56 79 AE  |Ba-135m |28.7(2) h                  |11/2-            |268.22(2) keV 56 79 C   |Ba-135m |1.20 d                     |11/2- 56 80 ABC |Ba-136  |STABLE                     |0+ 56 80 AE  |Ba-136m |308.4(19) ms               |7-               |2030.466(18) keV 56 80 C   |Ba-136m |0.308 s                    |7- 56 81 ABC |Ba-137  |STABLE                     |3/2+ 56 81 AE  |Ba-137m1|2.552(1) min               |11/2-            |661.659(3) keV 56 81 C   |Ba-137m1|2.552 min                  |11/2- 56 81 D   |Ba-137m2|0.59(10) µs                |(17/2-)          |2349.1(4) keV 56 82 ABC |Ba-138  |STABLE                     |0+ 56 82 AD  |Ba-138m |800(100) ns                |6+               |2090.54(6) keV 56 83 A   |Ba-139  |83.1(3) min                |(7/2-) 56 83 B   |Ba-139  |83.06(28) min              |7/2- 56 83 C   |Ba-139  |1.396 h                    |7/2- 56 84 ABC |Ba-140  |12.752(3) d                |0+ 56 85 ABC |Ba-141  |18.27(7) min               |3/2- 56 86 AB  |Ba-142  |10.6(2) min                |0+ 56 86 C   |Ba-142  |10.7 min                   |0+ 56 87 AB  |Ba-143  |14.5(3) s                  |5/2- 56 87 C   |Ba-143  |14.3 s                     |5/2+ 56 88 AB  |Ba-144  |11.5(2) s                  |0+ 56 88 C   |Ba-144  |11.4 s                     |0+ 56 89 AB  |Ba-145  |4.31(16) s                 |5/2- 56 89 C   |Ba-145  |4.0 s                      |(5/2-) 56 90 AB  |Ba-146  |2.22(7) s                  |0+ 56 90 C   |Ba-146  |2.20 s                     |0+ 56 91 AB  |Ba-147  |0.893(1) s                 |(3/2+) 56 91 C   |Ba-147  |0.892 s                    | 56 92 AB  |Ba-148  |0.612(17) s                |0+ 56 92 C   |Ba-148  |0.64 s                     | 56 93 A   |Ba-149  |344(7) ms                  |3/2-# 56 93 B   |Ba-149  |0.344(7) s                 | 56 93 C   |Ba-149  |0.36 s                     | 56 94 AB  |Ba-150  |300 ms                     |0+ 56 94 C   |Ba-150  |0.3 s                      | 56 95 A   |Ba-151  |200# ms [>300 ns]          |3/2-# 56 95 BC  |Ba-151  |>150 ms                    | 56 96 A   |Ba-152  |100# ms                    |0+ 56 96 B   |Ba-152  |~0.1 s                     |0+ 56 97 A   |Ba-153  |80# ms                     |5/2-# 56 97 B   |Ba-153  |~0.08 s                    |

Femto 12:17, 15 November 2005 (UTC)
 * Note: I changed the "a"'s to "yrs" (years), which is consistent with what is mentioned in the lead of the article. I'm not sure why a's were present instead. Danski14(talk) 23:45, 5 December 2011 (UTC)

I see only one exception
The lead states "most of these are highly radioactive and have half-lives in the several millisecond to several minute range. The only notable exceptions are 133Ba which has a half-life of 10.51 years, and 137mBa (2.55 minutes)." How is the second of these an exception when its half-life falls well within the range of the non-exceptional isotopes? __meco (talk) 23:36, 18 August 2008 (UTC)
 * The phrase really should be "isotopes are never seen", because they're too short-lived. 137mBa is important because of its presence in the Cesium-137 decay chain. I'll see if I can fix it. 71.41.210.146 (talk) 19:31, 28 March 2011 (UTC)

Stability trend indications
See Talk:Isotopes of caesium.WFPM (talk) 04:47, 4 November 2010 (UTC)

Note that years in Spanish are noted by "a"s (for anos), pronounced anyos. I don't have a Spanish typewriter.