Quantal diffusion description of multinucleon transfers in heavy-ion collisions

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2018-05-29

Author

Ayik, S.
Yilmaz, B.
Yılmaz, Osman
Umar, A. S.

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Employing the stochastic mean-field (SMF) approach, we develop a quantal diffusion description of the multi-nucleon transfer in heavy-ion collisions at finite impact parameters. The quantal transport coefficients are determined by the occupied single-particle wave functions of the time-dependent Hartree-Fock equations. As a result, the primary fragment mass and charge distribution functions are determined entirely in terms of the mean-field properties. This powerful description does not involve any adjustable parameter, includes the effects of shell structure, and is consistent with the fluctuation-dissipation theorem of the nonequilibrium statistical mechanics. As a first application of the approach, we analyze the fragment mass distribution in Ca-48 + U-238 collisions at the center-of-mass energy E-c.m. = 193 MeV and compare the calculations with the experimental data.

Subject Keywords

Mass, Neutron, Transport, Nuclear, Fusion-fission, Hartree-fock calculations, Quası-fission

URI

https://hdl.handle.net/11511/32802

Journal

PHYSICAL REVIEW C

DOI

https://doi.org/10.1103/physrevc.97.054618

Collections

Department of Physics, Article

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Citation Formats

S. Ayik, B. Yilmaz, O. Yılmaz, and A. S. Umar, “Quantal diffusion description of multinucleon transfers in heavy-ion collisions,” PHYSICAL REVIEW C, pp. 0–0, 2018, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/32802.