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Comparative Study of Spontaneous-Fission Characteristics of 252No and 254No Isotopes

  • PHYSICS OF ELEMENTARY PARTICLES AND ATOMIC NUCLEI. EXPERIMENT
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Abstract

Spontaneous fissions of the 252No and 254No nobelium isotopes have been studied in a series of experiments with the SHELS separator. These isotopes are produced by colliding a beam of 48Ca ions from the U-400 cyclotron with the 206Pb and 208Pb targets. The measured characteristics of the 252No and 254No spontaneous fissions include their half-lives, total kinetic energies of fission fragments, and prompt-neutron multiplicities. The average number of neutrons per 254No spontaneous-fission act is measured for the first time as 4.88 ± 0.53.

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Funding

This work was supported by the Russian Foundation for Basic Research under grant no. 18-52-15004. M.S. Tezekbayeva was supported by the Association of Young Scientists and Specialists of the Joint Institute for Nuclear Research under grant no. 21-502-09 for young physicists.

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Authors and Affiliations

  1. Joint Institute for Nuclear Research, 141980, Dubna, Moscow oblast, Russia

    A. V. Isaev, A. V. Andreev, M. L. Chelnokov, V. I. Chepigin, I. N. Izosimov, A. A. Kuznetsova, O. N. Malyshev, R. S. Mukhin, A. G. Popeko, Y. A. Popov, T. M. Shneidman, E. A. Sokol, A. I. Svirikhin, M. S. Tezekbayeva, A. V. Yeremin & N. I. Zamyatin

  2. Dubna State University, 141980, Dubna, Moscow oblast, Russia

    O. N. Malyshev, A. G. Popeko, Y. A. Popov, A. I. Svirikhin & A. V. Yeremin

  3. Institute of Nuclear Physics, Ministry of Energy, 050032, Almaty, Kazakhstan

    M. S. Tezekbayeva

  4. Institut Pluridisciplinaire Hubert Curien, IN2P3-CNRS, Strasbourg, France

    P. Brionnet, O. Dorvaux, B. Gall, K. Kessaci & A. Sellam

  5. IJCLab, Universite Paris-Saclay, IN2P3-CNRS, Orsay, France

    K. Hauschild & A. Lopez-Martens

  6. Comenius University, Bratislava, Slovakia

    S. Antalic & P. Mosat

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  1. A. V. Isaev
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  2. A. V. Andreev
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Correspondence to A. V. Isaev.

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Translated by A. Asratyan

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Isaev, A.V., Andreev, A.V., Chelnokov, M.L. et al. Comparative Study of Spontaneous-Fission Characteristics of 252No and 254No Isotopes. Phys. Part. Nuclei Lett. 18, 449–456 (2021). https://doi.org/10.1134/S1547477121040087

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