Long range absorption in the scattering of 6He on 208Pb and 197Au at 27 MeV

Abstract

Quasi-elastic scattering of 6He at E_lab=27 MeV from 197Au has been measured in the angular range of 6-72 degrees in the laboratory system employing LEDA and LAMP detection systems. These data, along with previously analysed data of 6He + 208Pb at the same energy, are analyzed using Optical Model calculations. The role of Coulomb dipole polarizability has been investigated. Large imaginary diffuseness parameters are required to fit the data. This result is an evidence for long range absorption mechanisms in 6He induced reactions.

10 pages, 10 figures, minor corrections. To appear in Nucl. Phys. A

References in corpus (1)

• Transfer/Breakup Modes in the 6He+209Bi Reaction Near and Below the Coulomb Barrier

Cited by in corpus (6)

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• Comparison of 120Sn(6He,6He)120Sn and 120Sn(alpha,alpha)120Sn elastic scattering and signatures of the 6He neutron halo in the optical potential
• Global Optical Potential for the Elastic Scattering of ${}^6$He at Low Energies
• Simultaneous analysis of elastic scattering and transfer/breakup channels for the 6He+208Pb reaction at energies near the Coulomb barrier
• Is the unusual near-threshold potential behavior in elastic scattering of weakly bound nuclei a precision error?