Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2018, Vol. 29 ›› Issue (11): 161 doi: 10.1007/s41365-018-0498-6

• NUCLEAR PHYSICS AND INTERDISCIPLINARY RESEARCH • Previous Articles     Next Articles

Influence of the shell effects on evaporation residue cross section of superheavy nuclei

D. Naderi 1 • S. A. Alavi 2   

  1. 1 Department of Physics, Faculty of Basic Sciences, Razi University, Kermanshah 67149, Iran
    2 Department of Physics, University of Sistan and Baluchestan, Zahedan 98135, Iran
  • Contact: S. A. Alavi E-mail:s.a.alavi@phys.usb.ac.ir
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D. Naderi, S. A. Alavi. Influence of the shell effects on evaporation residue cross section of superheavy nuclei.Nuclear Science and Techniques, 2018, 29(11): 161     doi: 10.1007/s41365-018-0498-6

Abstract:

In order to study the influence of the shell effects on the formation and fission of superheavy elements, we applied multidimensional Langevin equations. The evaporation residue cross sections have been calculated for 3n, 4n, and 5n evaporation channels using three (K =0)- and four (K ≠0)-dimensional Langevin equations. Calculations were done for 48Ca + 238U and 48Ca + 244Pu hot fusion reactions with 3n, 4n evaporation channels and 70Zn +208Pb, and 54Cr +209Bi cold fusion reactions with 1n and 2n evaporation channels. The calculations were performed for 4n and 5n evaporation channels of the 26Mg + 238U reaction, as well. Our results show that with increasing dimension of Langevin equations the residue cross section increases, whereas the fission cross section decreases. The obtained results with four-dimensional Langevin and considering shell effects are in better agreement with experimental data in comparison with three- and four-dimensional Langevin equations without shell effects.

Key words: Superheavy, Langevin equations, Cross section