Search for new isotopes of element 112 by irradiation of 238U with 48Ca

Yu Ts Oganessian, A. V. Yeremin, G. G. Gulbekian, S. L. Bogomolov, V. I. Chepigin, B. N. Gikal, V. A. Gorshkov, M. G. Itkis, A. P. Kabachenko, V. B. Kutner, A. Yu Lavrentev, O. N. Malyshev, A. G. Popeko, J. Roháč, R. N. Sagaidak, S. Hofmann, G. Münzenberg, M. Veselsky, S. Saro, N. IwasaK. Morita

研究成果: Contribution to journalArticle査読

130 被引用数 (Scopus)

抄録

The reaction 48Ca+238U was investigated at the recoil separator VASSILISSA at the Flerov Laboratory of Nuclear Reactions, JINR Dubna, in attempts to synthesize new isotopes of element 112. The experiments were performed at two beam energies resulting in excitation energies of the compound nucleus of 33 and 39 MeV. The collected beam dose was 3.5×1018 and 2.2×1018, respectively. Two spontaneous fission events were observed at the lower beam energy, which tentatively were assigned to the new neutron rich isotope 283112 produced in the reaction 238U(48Ca,3n)283112. The measured cross-section is (5.0 +6.3-3.2) pb and the half-life is (81 +147-32) s. No event was observed at the higher beam energy resulting in the upper cross-section limit of 7.3 pb.

本文言語英語
ページ(範囲)63-68
ページ数6
ジャーナルEuropean Physical Journal A
5
1
DOI
出版ステータス出版済み - 1 1 1999
外部発表はい

All Science Journal Classification (ASJC) codes

  • 核物理学および高エネルギー物理学

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