Spontaneous-fission decay properties and production cross-sections for the neutron-deficient nobelium isotopes formed in the 44,48Ca + 204,206,208Pb reactions

A. V. Belozerov, M. L. Chelnokov, V. I. Chepigin, T. P. Drobina, V. A. Gorshkov, A. P. Kabachenko, O. N. Malyshev, I. M. Merkin, Yu Ts Oganessian, A. G. Popeko, R. N. Sagaidak, A. I. Svirikhin, A. V. Yeremin, G. Berek, I. Brida, Š Šáro

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Abstract

Heavy-ion fusion reactions 48Ca + 204Pb and 44Ca + 208Pb leading to the same compound nucleus 252No* were run in attempts to produce new neutron-deficient spontaneous-fission isotopes of 249,250No using the electrostatic separator VASSILISSA. Production cross-sections for the spontaneous-fission activities with the half-lives 5.6 and 54 μs observed in these reactions are compared with the measured ones for the well-known isotopes of 251-255No formed in the heavy-ion fusion reactions 48Ca + 206Pb and 48Ca + 208Pb. The obtained excitation functions for the reaction products formed after the evaporation of 1-4 neutrons from the corresponding compound No nuclei have been compared with similar data obtained earlier and results of statistical model calculations.

Original languageEnglish
Pages (from-to)447-456
Number of pages10
JournalEuropean Physical Journal A
Volume16
Issue number4
DOIs
Publication statusPublished - Apr 2003

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nobelium isotopes
fission
neutrons
cross sections
heavy ions
decay
isotopes
fusion
nuclei
separators
half life
reaction products
evaporation
electrostatics
excitation

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics

Cite this

Spontaneous-fission decay properties and production cross-sections for the neutron-deficient nobelium isotopes formed in the 44,48Ca + 204,206,208Pb reactions. / Belozerov, A. V.; Chelnokov, M. L.; Chepigin, V. I.; Drobina, T. P.; Gorshkov, V. A.; Kabachenko, A. P.; Malyshev, O. N.; Merkin, I. M.; Oganessian, Yu Ts; Popeko, A. G.; Sagaidak, R. N.; Svirikhin, A. I.; Yeremin, A. V.; Berek, G.; Brida, I.; Šáro, Š.

In: European Physical Journal A, Vol. 16, No. 4, 04.2003, p. 447-456.

Research output: Contribution to journalArticle

Belozerov, AV, Chelnokov, ML, Chepigin, VI, Drobina, TP, Gorshkov, VA, Kabachenko, AP, Malyshev, ON, Merkin, IM, Oganessian, YT, Popeko, AG, Sagaidak, RN, Svirikhin, AI, Yeremin, AV, Berek, G, Brida, I & Šáro, Š 2003, 'Spontaneous-fission decay properties and production cross-sections for the neutron-deficient nobelium isotopes formed in the 44,48Ca + 204,206,208Pb reactions', European Physical Journal A, vol. 16, no. 4, pp. 447-456. https://doi.org/10.1140/epja/i2002-10109-6
Belozerov, A. V. ; Chelnokov, M. L. ; Chepigin, V. I. ; Drobina, T. P. ; Gorshkov, V. A. ; Kabachenko, A. P. ; Malyshev, O. N. ; Merkin, I. M. ; Oganessian, Yu Ts ; Popeko, A. G. ; Sagaidak, R. N. ; Svirikhin, A. I. ; Yeremin, A. V. ; Berek, G. ; Brida, I. ; Šáro, Š. / Spontaneous-fission decay properties and production cross-sections for the neutron-deficient nobelium isotopes formed in the 44,48Ca + 204,206,208Pb reactions. In: European Physical Journal A. 2003 ; Vol. 16, No. 4. pp. 447-456.
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AU - Chepigin, V. I.

AU - Drobina, T. P.

AU - Gorshkov, V. A.

AU - Kabachenko, A. P.

AU - Malyshev, O. N.

AU - Merkin, I. M.

AU - Oganessian, Yu Ts

AU - Popeko, A. G.

AU - Sagaidak, R. N.

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AU - Brida, I.

AU - Šáro, Š

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