Neutron-rich rare isotope production from projectile fission of heavy beams in the energy range of 20 MeV/nucleon

We investigate the possibilities of producing neutron-rich nuclides in projectile fission of heavy beams in the energy range of 20 MeV/nucleon expected from low-energy facilities. We report our efforts to theoretically describe the reaction mechanism of projectile fission following a multinucleon tr...

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Bibliographic Details
Published in:arXiv.org 2016-08
Main Authors: Vonta, N, Souliotis, G A, Loveland, W D, Kwon, Y K, Tshoo, K, Jeong, S C, Veselsky, M, Bonasera, A, Botvina, A
Format: Article
Language:English
Subjects:
Fission
Ionic collisions
Lead isotopes
Mathematical models
Molecular dynamics
Neutrons
Nuclides
Projectiles
Reaction mechanisms
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Summary:We investigate the possibilities of producing neutron-rich nuclides in projectile fission of heavy beams in the energy range of 20 MeV/nucleon expected from low-energy facilities. We report our efforts to theoretically describe the reaction mechanism of projectile fission following a multinucleon transfer collision at this energy range. Our calculations are mainly based on a two-step approach: the dynamical stage of the collision is described with either the phenomenological Deep-Inelastic Transfer model (DIT), or with the microscopic Constrained Molecular Dynamics model (CoMD). The deexcitation/fission of the hot heavy projectile fragments is performed with the Statistical Mul- tifragmentation Model (SMM). We compared our model calculations with our previous experimental projectile-fission data of 238U (20 MeV/nucleon)+208Pb and 197Au (20 MeV/nucleon)+197Au and found an overall reasonable agreement. Our study suggests that projectile fission following periph- eral heavy-ion collisions at this energy range offers an effective route to access very neutron-rich rare isotopes toward and beyond the astrophysical r-process path.
ISSN:2331-8422
DOI:10.48550/arxiv.1608.06892