Element 108, hassium, was produced in the reaction
248Cm(
26Mg, xn)
274-xHs and chemically isolated. After gas phase separation of HsO
4, 26 genetically linked decay chains have been observed. These were attributed to decays of three different Hs isotopes produced in the 3-5n evaporation channels. Decay properties of five nuclei have been unambiguously established for the first time, including the one for the the doubly-magic nuclide
270Hs. The observed decay properties provide strong indications for enhanced nuclear stability in this area of the heaviest known elements and provide an important reference point for theoretical models. Experimental data indicate a surprising cross section enhancement at sub-barrier energies due to the deformation of the target nucleus. This opens prospects for the search for the 3n evaporation channel products in nuclear reactions with actinide targets, induced with light neutron rich projectiles.
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Element 108, hassium, was produced in the reaction
248Cm(
26Mg, xn)
274-xHs and chemically isolated. After gas phase separation of HsO
4, 26 genetically linked decay chains have been observed. These were attributed to decays of three different Hs isotopes produced in the 3-5n evaporation channels. Decay properties of five nuclei have been unambiguously established for the first time, including the one for the the doubly-magic nuclide
270Hs. The observed decay properties provide strong indications...
»