Talk:Isotopes of berkelium/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 97 138 A  |Bk-235  |20# s                      | 97 138 B  |Bk-235  |~20 s                      | 97 139 A  |Bk-236  |1# min                     | 97 139 B  |Bk-236  |~42 s                      | 97 140 A  |Bk-237  |1# min                     |7/2+# 97 140 B  |Bk-237  |~1 min                     | 97 141 AC |Bk-238  |2.40(8) min                | 97 141 B  |Bk-238  |144(5) s                   | 97 142 A  |Bk-239  |3# min                     |7/2+# 97 143 AB |Bk-240  |4.8(8) min                 | 97 143 C  |Bk-240  |~4.8 min                   | 97 144 A  |Bk-241  |4.6(4) min                 |(7/2+) 97 144 B  |Bk-241  |~3 min                     |(7/2+) 97 145 A  |Bk-242  |7.0(13) min                |2-# 97 145 BC |Bk-242  |7.0(13) min                | 97 145 A  |Bk-242m |600(100) ns                |                 |200(200)# keV 97 145 D  |Bk-242m |600(100) ns                |                 |0+Y keV 97 146 ABC |Bk-243 |4.5(2) h                   |(3/2-) 97 147 ABC |Bk-244 |4.35(15) h                 |(4-)# 97 148 ABC |Bk-245 |4.94(3) d                  |3/2- 97 149 AB |Bk-246  |1.80(2) d                  |2(-) 97 149 C  |Bk-246  |1.80 d                     |(2-) 97 150 A  |Bk-247  |1.38(25)E+3 a              |(3/2-) 97 150 B  |Bk-247  |1380(250) a                |(3/2-) 97 150 C  |Bk-247  |1.4E+3 a                   |(3/2-) 97 151 A  |Bk-248  |>9 a                       |6+# 97 151 B  |Bk-248  |>9 a                       | 97 151 C  |Bk-248  |23.7 h                     |(1-) 97 151 A  |Bk-248m |23.7(2) h                  |1(-)             |30(70)# keV 97 151 E  |Bk-248m |23.7(2) h                  |1(-)             |0+X keV 97 152 AB |Bk-249  |330(4) d                   |7/2+ 97 152 C  |Bk-249  |320. d                    |7/2+ 97 152 AD |Bk-249m |300 µs                     |(3/2-)           |8.80(10) keV 97 153 AB |Bk-250  |3.212(5) h                 |2- 97 153 C  |Bk-250  |3.217 h                    |2- 97 153 A  |Bk-250m1|29(1) µs                   |(4+)             |35.59(5) keV 97 153 D  |Bk-250m1|29(1) µs                   |(4+)             |35.59 keV 97 153 A  |Bk-250m2|213(8) µs                  |(7+)             |84.1(21) keV 97 153 D  |Bk-250m2|213(8) µs                  |(7+)             |86(2) keV 97 154 ABC |Bk-251 |55.6(11) min               |(3/2-)# 97 154 AD |Bk-251m |58(4) µs                   |(7/2+)#          |35.5(13) keV 97 155 AC |Bk-252  |1.8(5) min                 | 97 155 B  |Bk-252  |~2 min                     | 97 156 A* |Bk-253  |10# min                    | 97 156 B  |Bk-253  |~10 min                    | 97 157 A  |Bk-254  |1# min                     | 97 157 B  |Bk-254  |~2 min                     |

Femto 11:31, 17 November 2005 (UTC)

Is there a mistake with Bk-248 half-life? In none of the references can I find 300 years. Some at >9 years, some at less than a day. 58.171.126.29 (talk) 07:18, 20 October 2018 (UTC)David Payne gbooks@tpg.com.au
 * See (cited in the article). Double sharp (talk) 07:47, 20 October 2018 (UTC)