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Time-dependent Hartree-Fock plus Langevin approach for hot fusion reactions to synthesize the Z=120 superheavy element

K. Sekizawa and K. Hagino
Phys. Rev. C 99, 051602(R) – Published 22 May 2019

Abstract

We develop a novel approach to fusion reactions for synthesis of superheavy elements, which combines the time-dependent Hartree-Fock (TDHF) method with a dynamical diffusion model based on the Langevin equation. In this approach, the distance of the closest approach for the capture process is estimated within the TDHF approach, which is then plugged into the dynamical diffusion model as an initial condition. We apply this approach to hot fusion reactions leading to formation of the element Z=120, that is, the Ca48+Fm254,257, V51+Bk249, and Cr54+Cm248 reactions. Our calculations indicate that the distances of the closest approach for these systems are similar to each other and thus the difference in the probabilities of evaporation residue formation among those reaction systems originates mainly from the evaporation process, which is sensitive to the fission barrier height and the excitation energy of a compound nucleus.

  • Figure
  • Figure
  • Received 15 March 2019

DOI:https://doi.org/10.1103/PhysRevC.99.051602

©2019 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

K. Sekizawa1 and K. Hagino2,3

  • 1Center for Transdisciplinary Research, Institute for Research Promotion, Niigata University, Niigata 950-2181, Japan
  • 2Department of Physics, Tohoku University, Sendai 980-8578, Japan
  • 3Research Center for Electron Photon Science, Tohoku University, 1-2-1 Mikamine, Sendai 982-0826, Japan

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Issue

Vol. 99, Iss. 5 — May 2019

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