Production of neutron-enriched isotopes along magic number N=126 by multinucleon transfer reactions with radioactive-ion beams
Saiko V.V. Karpov A.V.
June 2024American Physical Society
Physical Review C
2024#109Issue 6
Background: Multinucleon transfer (MNT) processes in low-energy deep inelastic (damped) collisions of heavy ions can be employed to produce heavy neutron-enriched nuclei. Recent progress in development of radioactive-ion beam (RIB) facilities may give additional possibilities in producing nuclei with large neutron excess. Purpose: A major aim of the work is to calculate the cross sections of heavy neutron-rich isotopes with the magic number N=126 in the reactions Sn132+Pt198 and Xe136,138,140+Pt198 within a multidimensional dynamical model based on the Langevin equations. Another purpose of the paper is to study the relative production rates of such nuclei reachable at currently working RIB facilities. Method: A multidimensional dynamical model of nucleus-nucleus collisions based on the Langevin equations [A. V. Karpov and V. V. Saiko, Phys. Rev. C 96, 024618 (2017)2469-998510.1103/PhysRevC.96.024618] has been used in the present work. This model provides a reasonable description of available experimental data. Results: Cross sections of heavy neutron-enriched nuclides obtained in the MNT reactions Sn132+Pt198 and Xe136,138,140+Pt198 have been calculated. Relative production rates of these nuclei were estimated using beam intensities available at currently working RIB facilities. Conclusions: Using neutron-rich radioactive projectiles in multinucleon transfer reactions with the Pt198 target, one can reach an order of magnitude higher cross sections of neutron-enriched nuclides with the magic number N=126. Relative production yields of such nuclei increase with the increasing N/Z ratio of the projectile.
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Flerov Laboratory of Nuclear Reactions, JINR, Dubna, 141980, Russian Federation
Institute of Nuclear Physics, Almaty, 050032, Kazakhstan
Dubna State University, Dubna, 141982, Russian Federation
Flerov Laboratory of Nuclear Reactions
Institute of Nuclear Physics
Dubna State University
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