States built on the 10⁺ isomers in ^{118,120,122,124}Sn

The high-spin structure above the previously known 10⁺ isomers of the ^{118, 120,122, 124}Sn isotopes was studied via prompt γ-ray spectroscopy. All isotopes were populated as fragments following the fission of much heavier compound nuclei formed in three fusion-fission reactions. The ^{118, 120,122, 124}Sn isotopes were also independently populated and studied as evaporation residues in the ¹²⁴Sn(n, xnγ) reactions, with x=3,5,7. Transitions above the previously known 10⁺ isomers were observed for the first time and the corresponding level schemes above these isomers were established up to 6646-, 5673-, 5386-, and 5952-keV excitation energy for ^{118, 120,122, 124}Sn, respectively. The experimental results are compared with predictions from shell-model calculations.