alpha-particle production in the scattering of 6He by 208Pb at energies around the Coulomb barrier

Abstract

New experimental data from the scattering of 6He+208Pb at energies around and below the Coulomb barrier are presented. The yield of breakup products coming from projectile fragmentation is dominated by a strong group of $\alpha$ particles. The energy and angular distributions of this group have been analyzed and compared with theoretical calculations. This analysis indicates that the $\alpha$ particles emitted at backward angles in this reaction are mainly due to two-neutron transfer to weakly bound states of the final nucleus.

arXiv comment20 pages, 5 figures. Nuclear Physics A792 (2007) 2-17

References in corpus (9)

• Transfer/Breakup Modes in the 6He+209Bi Reaction Near and Below the Coulomb Barrier
• Continuum-discretized coupled-channels method for four-body nuclear breakup in ${}^6$He+${}^{12}$C scattering
• Fusion Induced by Radioactive Ion Beams
• Coulomb breakup effects on the elastic cross section of ${}^6$He+${}^{209}$Bi scattering near Coulomb barrier energies
• Improved di-neutron cluster model for 6He scattering
• Long range absorption in the scattering of 6He on 208Pb and 197Au at 27 MeV
• Transfer to the continuum and Breakup reactions
• Four-body DWBA calculations of the Coulomb breakup of 6He
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• Long range effects on the optical model of 6He around the Coulomb barrier
• Simultaneous analysis of elastic scattering and transfer/breakup channels for the 6He+208Pb reaction at energies near the Coulomb barrier
• Elastic scattering, inelastic excitation, and 1n pick-up transfer cross sections for ${}^{10}$B+${}^{120}$Sn at energies near the Coulomb barrier
• Breakup mechanisms in the 6He+64Zn reaction at near-barrier energies
• Systematical study of optical potential strengths in reactions involving strongly, weakly bound and exotic nuclei on ${}^{120}$Sn
• Systematic calculations of reactions with exotic and stable nuclei to establish a unified theoretical approach
• Inclusive Breakup Cross Sections in Reactions Induced by the Nuclides ${}^6$He and ${}^{6,7}$Li in the Two-Body Cluster Model