Nuclear Wallet Card - Z( 97)


   Isotope[1]              delta      T1/2 or
  Z   El   A    Jpi[2]     (MeV)[3]   Abundance[4]   Decay Mode[5]
 === === ====   =======   =========  =============  =====================
  97 Bk  238               54.3s       144 s 5      EC,EF 0.048%
         240               55.7s       4.8 m 8      EC ~100%,EF w%
         241    (7/2+)     56.1s          ?
         242               57.8s       7.0 m 13     EC
         242M              57.8s      9.5 NS 20     SF > 0%
         242M              57.8s      600 NS 100    SF > 0%
         243    (3/2-)    58.685       4.5 h 2      EC ~ 99.85%,A ~ 0.15%
         244     (1-)      60.70      4.35 h 15     EC 99.994%,A 6.0E-3%
         244M              60.70      820 NS 60     SF
         245     3/2-     61.809       4.94 d 3     EC 99.88%,A 0.12%
         246     2(-)      63.96       1.80 d 2     EC,A < 0.2%
         247    (3/2-)    65.482      1380 y 250    A
         248     1(-)      68.10       23.7 h 2     B- 70%,EC 30%
                                                    A <0.001%
         248     (6+)      68.10        > 9 y       A > 70%
         249     7/2+     69.843       320 d 6      B-,A 1.4E-3%,SF 4.7E-8%
         250      2-      72.945      3.217 h 5     B-
         251    (3/2-)     75.22      55.6 m 11     B-,A ~1.0E-5%
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