"Elastic scattering of the halo nucleus 6He from 206Pb below the Coulomb barrier "
Łukasz Standyło, Sołtan Institute for Nuclear Studies, Warsaw, Poland/Joint Institute for Nuclear Research, Dubna, R
(id #75)
Seminar: NoPoster: Yes
Invited talk: No
Authors:
Ł. Standyło(1,3), I. Martel(2), L. Acosta(2), C. Angulo(4), R. Berjillos(2), J. A. Duenas(2), M.S. Golovkov(3), T. Keutgen(4), M. Mazzocco(5), F. Perez-Brenal(2), A. M. Sanches-Benitez(2), C. Signorini(5), M. Romoli(6), K. Rusek(1) and R. Wolski(3,7)
(1) Sołtan Institute for Nuclear Studies, Warsaw, Poland
(2) Departamento de Física Aplicada, UHU Huelva, Spain
(3) Joint Institute for Nuclear Research, Dubna, Russia
(4) Cyclotron Research Centre, Louvain-la-Neuve, Belgium
(5) INFN Laboratori Nazionali di Legnaro, Italy
(6) Instituto Nazionale di Fisica Nucleare, Napoli, Italy
(7) The Henryk Niewodniczanski Institute of Nuclear Physics PAS, Cracow, Poland
Abstract
The elastic scattering of 6He nuclei from 206Pb target has been measured at energy of 18MeV, what is below the Coulomb barrier ~ 20 MeV. This is a part of a study dedicated to exotic nuclei interaction with atomic nuclei at sub-barrier energies. The measurement was performed at the Cyclotron Research Centre in Louvain-la-Neuve, employing LEDA (Louvain Edinburgh Detectors Array) and LAMP detection systems. The interest of measuring elastic scattering of 6He arises because of specific properties of this nucleus: a weak bounding and the three-body n+n+α structure with an extended neutron distribution, which significantly affect the dynamics of the collision.
Apart from the elastically scattered 6He a large bump corresponding to α - particles produced by 6He → α + 2n breakup and 1n and 2n transfer reactions was observed, especially at the backward angles region. Optical Model calculations have been done using the double-folding potential derived from the both densities of the colliding nuclei and the parametrized dynamic polarization potential which simulates the effects of channel couplings. The calculations confirm the long range nature of this polarization potential.
Ł. Standyło(1,3), I. Martel(2), L. Acosta(2), C. Angulo(4), R. Berjillos(2), J. A. Duenas(2), M.S. Golovkov(3), T. Keutgen(4), M. Mazzocco(5), F. Perez-Brenal(2), A. M. Sanches-Benitez(2), C. Signorini(5), M. Romoli(6), K. Rusek(1) and R. Wolski(3,7)
(1) Sołtan Institute for Nuclear Studies, Warsaw, Poland
(2) Departamento de Física Aplicada, UHU Huelva, Spain
(3) Joint Institute for Nuclear Research, Dubna, Russia
(4) Cyclotron Research Centre, Louvain-la-Neuve, Belgium
(5) INFN Laboratori Nazionali di Legnaro, Italy
(6) Instituto Nazionale di Fisica Nucleare, Napoli, Italy
(7) The Henryk Niewodniczanski Institute of Nuclear Physics PAS, Cracow, Poland
Abstract
The elastic scattering of 6He nuclei from 206Pb target has been measured at energy of 18MeV, what is below the Coulomb barrier ~ 20 MeV. This is a part of a study dedicated to exotic nuclei interaction with atomic nuclei at sub-barrier energies. The measurement was performed at the Cyclotron Research Centre in Louvain-la-Neuve, employing LEDA (Louvain Edinburgh Detectors Array) and LAMP detection systems. The interest of measuring elastic scattering of 6He arises because of specific properties of this nucleus: a weak bounding and the three-body n+n+α structure with an extended neutron distribution, which significantly affect the dynamics of the collision.
Apart from the elastically scattered 6He a large bump corresponding to α - particles produced by 6He → α + 2n breakup and 1n and 2n transfer reactions was observed, especially at the backward angles region. Optical Model calculations have been done using the double-folding potential derived from the both densities of the colliding nuclei and the parametrized dynamic polarization potential which simulates the effects of channel couplings. The calculations confirm the long range nature of this polarization potential.
