The nuclear response and the imaginary potential for nucleus-nucleus collisions |
| |
Authors: | SC Phatak Bikash Sinha |
| |
Institution: | Institute of Physics, Bhubaneswar — 751 007, India;Nuclear Physics Division, Bhabha Atomic Research Centre, Trombay, Bombay-400 085, India |
| |
Abstract: | The Fermi-gas model is used in this paper to study the nucleus-nucleus collision. The field produced by one of the nuclei is considered to act on nucleons in the other nucleus, which is treated as a Fermi gas of radius R. The imaginary part of the (non-local) nucleus-nucleus potential is then computed by evaluating the energy-conserving second-order term in which the intermediate states are particle-hole excitations produced in the Fermi gas. The equivalent local potential, obtained by using the Perey-Saxon method, is compared with phenomenological imaginary potentials. Later it is shown that, in the limit of small range of non-locality, the imaginary potential can be related to the nuclear response function. With this, one can write the nuclear friction coefficient that is used in phenomenological analyses of heavy-ion collisions in terms of the imaginary potential. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|