Backscattering measurement of 6He on 209Bi: critical interaction distance,

V. GUIMARÃES,; J. J. KOLATA; E. F. AGUILERA; A. HOWARD; A. ROBERTS; F. BECCHETTI; R. TORRES-ISEA; J. RIGGINS; M. FEBRARRO; V. SCARDUELLI; P. NETO DE FARIA; D. S. MONTEIRO; J. F. P. HUIZA; A. ARAZI; J. HINNEFELD; A. M. MORO; V. MORCELLE; A BARIONI; J. MITCHELL

PHYS. REV. - C

AMER PHYSICAL SOC

Lugar: New York; Año: 2016 vol. 93 p. 646071 - 646077

0556-2813

An elastic backcattering experiment has been performed at energies below the Coulomb barrier to investigate static and dynamic effects in the interaction of 6He with 209Bi. The measured cross sections are presented in terms of the /Ruth ratio, as a function of the distance of closest approach on a Rutherford trajectory. The data were compared with a 3-body Coupled Discretized ContinuumChannel (CDCC) calculation and good agreement was observed. In addition, the critical distance of interaction was extracted. A larger value was obtained for the exotic 6He nucleus as compared with the weakly-bound 6Li and 9Be nuclei and the more-bound 4He, 12C and 16O nuclei.