Yields and genetic histories of 128Sb, 129Sb and 130Sb from thermal-neutron induced fission of 235U (original) (raw)

The following fractional independent yields have been determined: 10-min 1285b, _<0.037: 9.I-hr IzsSb, 0-031 +_ 0.005: 129Sb, 0.114 +_ 0.046: 6.3-min 13°Sb, 0.202 _+ 0.030: 40-min 13°Sh, 0.138 _ 0.034. The cumulative yield of 13°Sn has been determined to be 0.89 + 0.10'!~, and the following chain yields have been derived from this, the fractional independent yields and literature values: A = 128, 0-344 ___ 0.0187.: A = 129, 0.61 + 0.03'~,; A = 130, 1.43 + 0.18"~,. It has also been determined that 3-1 _+ 0.2% of t2SSn decays to the 9.l-hr 12~Sb isomer and that 52.9 + 3.4~, of 129Sb is formed by decay of 2.5-rain ~29Sn and 35.7 +_ 3.0 °~i is formed by decay of 7.4-min 129Sn.