This is an archive of past discussions about Isotopes of francium. 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
87 112 A |Fr-199 |16(7) ms |1/2+#
87 112 B |Fr-199 |12(+10-4) ms |
87 112 C |Fr-199 |12 s |
87 113 A |Fr-200 |24(10) ms |3+#
87 113 B |Fr-200 |49(4) ms |(3+)
87 113 C |Fr-200 |~20 ms |
87 113 D |Fr-200m |19(+13-6) ms |(3+) |0 keV
87 113 A |Fr-200m |650(210) ms |10-# |60(110) keV
87 113 E |Fr-200m |0.57(+27-14) s |(10-) |200# keV
87 114 A |Fr-201 |61(12) ms |(9/2-)
87 114 B |Fr-201 |67(3) ms |(9/2-)
87 114 C |Fr-201 |0.05 s |(9/2-)
87 114 B |Fr-201m |19(+19-6) ms | |0 MeV
87 114 D |Fr-201m |48(15) ms |(9/2-) |0 keV
87 115 A |Fr-202 |290(30) ms |(3+)
87 115 B |Fr-202 |0.23(+8-4) s |(3+)
87 115 C |Fr-202 |0.34 s |
87 115 A |Fr-202m |340(40) ms |(10-) |330(90)# keV
87 115 B |Fr-202m |0.23(+14-5) s |(10-) |0.1020 MeV
87 115 D |Fr-202m |0.34(4) s |(10-) |102+X keV
87 116 ABC |Fr-203 |0.55(2) s |(9/2-)#
87 117 AB |Fr-204 |1.7(3) s |(3+)
87 117 C |Fr-204 |2.1 s |
87 117 A |Fr-204m |2.6(3) s |(7+) |50(4) keV
87 117 E |Fr-204m |2.6(3) s |(7+) |41(7) keV
87 117 A |Fr-204m |1.7(6) s |(10-) |326(4) keV
87 117 E |Fr-204m |~1 s |(10-) |316(7) keV
87 118 AC |Fr-205 |3.85(10) s |(9/2-)
87 118 B |Fr-205 |3.80(3) s |(9/2-)
87 119 AB |Fr-206 |~16 s |(2+,3+)
87 119 C |Fr-206 |16.0 s |
87 119 A |Fr-206m1|15.9(1) s |(7+) |190(40) keV
87 119 E |Fr-206m1|15.9(1) s |(7+) |0+X keV
87 119 A |Fr-206m2|700(100) ms |(10-) |730(40) keV
87 119 E |Fr-206m2|0.7(1) s |(10-) |531+X keV
87 119 C |Fr-206m2|0.7 s |
87 120 ABC |Fr-207 |14.8(1) s |9/2-
87 121 ABC |Fr-208 |59.1(3) s |7+
87 122 ABC |Fr-209 |50.0(3) s |9/2-
87 123 ABC |Fr-210 |3.18(6) min |6+
87 124 ABC |Fr-211 |3.10(2) min |9/2-
87 125 AB |Fr-212 |20.0(6) min |5+
87 125 C |Fr-212 |20. min |(5+)
87 126 ABC |Fr-213 |34.6(3) s |9/2-
87 127 AB |Fr-214 |5.0(2) ms |(1-)
87 127 C |Fr-214 |5.1 ms |(1-)
87 127 A |Fr-214m1|3.35(5) ms |(8-) |123(6) keV
87 127 E |Fr-214m1|3.35(5) ms |(8-) |122(6) keV
87 127 C |Fr-214m1|3.4 ms |9-
87 127 D |Fr-214m2|103(4) ns |(11+) |638(6) keV
87 127 D |Fr-214m3|108(7) ns |(33+) |6477+Y keV
87 128 AB |Fr-215 |86(5) ns |9/2-
87 128 C |Fr-215 |0.12 µs |(9/2-)
87 129 AB |Fr-216 |0.70(2) µs |(1-)
87 129 C |Fr-216 |0.70 µs |
87 130 A |Fr-217 |16.8(19) µs |9/2-
87 130 B |Fr-217 |19(3) µs |9/2-
87 130 C |Fr-217 |0.016 ms |(9/2-)
87 131 AB |Fr-218 |1.0(6) ms |1-
87 131 C |Fr-218 |1. ms |(1-)
87 131 A |Fr-218m1|22.0(5) ms | |86(4) keV
87 131 E |Fr-218m1|22.0(5) ms | |86(8) keV
87 131 C |Fr-218m1|22. ms |
87 131 A |Fr-218m2| |high |200(150)# keV
87 132 AB |Fr-219 |20(2) ms |9/2-
87 132 C |Fr-219 |21. ms |(9/2-)
87 133 ABC |Fr-220 |27.4(3) s |1+
87 134 AB |Fr-221 |4.9(2) min |5/2-
87 134 C |Fr-221 |4.8 min |(5/2-)
87 135 AB |Fr-222 |14.2(3) min |2-
87 135 C |Fr-222 |14.3 min |2-
87 136 AB |Fr-223 |22.00(7) min |3/2(-)
87 136 C |Fr-223 |22.0 min |(3/2+)
87 137 AB |Fr-224 |3.33(10) min |1-
87 137 C |Fr-224 |3.0 min |1-
87 138 AB |Fr-225 |4.0(2) min |3/2-
87 138 C |Fr-225 |3.9 min |3/2
87 139 AB |Fr-226 |49(1) s |1-
87 139 C |Fr-226 |49. s |1
87 140 AB |Fr-227 |2.47(3) min |1/2+
87 140 C |Fr-227 |2.48 min |1/2
87 141 AB |Fr-228 |38(1) s |2-
87 141 C |Fr-228 |39. s |2-
87 142 AB |Fr-229 |50.2(4) s |(1/2+)#
87 142 C |Fr-229 |50. s |
87 143 AB |Fr-230 |19.1(5) s |
87 143 C |Fr-230 |19. s |(3)
87 144 AB |Fr-231 |17.6(6) s |(1/2+)#
87 144 C |Fr-231 |17. s |
87 145 ABC |Fr-232 |5(1) s |
