Abstract
Within the past twelve years, the recoil separator VASSILISSA has been used for the investigations of evaporation residues produced in heavy-ion-induced complete fusion reactions. In the course of the experimental work, fourteen new isotopes have been identified by the parent-daughter correlations in the region of elements with 92≤Z≤94. The study of the decay properties and formation cross sections of the isotopes of elements 110, 112, and 114 was performed using high-intensity 48Ca beams and 232Th, 238U, and 242Pu targets. At the beam energies corresponding to the calculated cross-section maxima of the 3n evaporation channels, the isotopes 277110, 283112, and 287114 were produced and identified. For further experiments aimed at the synthesis of the superheavy element isotopes (Z≥110) with the use of intensive 48Ca extracted beams, improvements in the ion optical system of the separator and the focal plane detector system have been made.
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From Yadernaya Fizika, Vol. 66, No. 6, 2003, pp. 1078–1088.
Original English Text Copyright © 2003 by Yeremin, Belozerov, Chelnokov, Chepigin, Gorshkov, Kabachenko, Malyshev, Oganessian, Popeko, Sagaidak, Svirikhin, Hofmann, Berek, Brida, Saro.
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Yeremin, A.V., Belozerov, A.V., Chelnokov, M.L. et al. The upgrade of the kinematic separator VASSILISSA—experimental results and plans. Phys. Atom. Nuclei 66, 1042–1052 (2003). https://doi.org/10.1134/1.1586416
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DOI: https://doi.org/10.1134/1.1586416