Reaction studies with neutron-rich light nuclei at the upgraded SEC Device: Exploring the excited structure of ¹¹Li

¹ Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain
² Department of Physics and Astronomy, University of Aarhus, DK-8000 Aarhus C, Denmark

^* Corresponding author: daniel.fernandez@csic.es

Published online: 8 December 2023

Abstract

The ¹¹Li nucleus is considered the best example of a two-neutron halo nucleus. While the structure of the ground state is well established there is still a significant debate regarding its excited states despite of the multiple experiments realised mainly from the excitation of the ground state of ¹¹Li that is rather complex. We propose a novel approach, to directly feed the different excited states of ¹¹Li by the (t,p) reaction as ⁹Li has a simpler structure. We will employ a ⁹Li beam produced at ISOLDE and post-accelerated by HIE-ISOLDE to energies of 7 MeV/u to impinge on a ³H-target located at the upgraded SEC station, this station contains a new particle detection set up: composed of 5 Si-particle telescopes in a pentagon configuration with end caps consisting of 2 CD Si detectors downstream and 1 CD upstream has been prepared to offer the maximum angular coverage and resolution. Geant4 Monte Carlo simulations with the efficiency of the setup is presented in the following proceeding.