Investigation of low-lying resonances in breakup of halo nuclei within time-dependent approach
Seminars
Seminar “Nuclear Theory”
Date and Time: Friday, 10 July 2020, at 2:30 PM
Venue: Online conference in Zoom, Bogoliubov Laboratory of Theoretical Physics
Seminar topic: «Investigation of low-lying resonances in breakup of halo nuclei within time-dependent approach»
Authors: D. S. Valiolda1,2, D. M. Janseitov1,2,3, V. S. Melezhik1
1 – Bogoliubov Laboratory of Theoretical Physics, JINR, Dubna, Russia
2 – al-Farabi Kazakh National University, Almaty, Kazakhstan
3 – Institute of Nuclear Physics, Almaty, Kazakhstan
Speaker: D. S. Valiolda
Abstract:
We investigate the Coulomb breakup of the 11Be halo nuclei on heavy target at energies from intermediate (70 MeV/nucleon) to low ones (5 MeV/nucleon) within non-perturbative time-dependent approach. The convergence of the computational scheme is demonstrated in all considered energy range including the low-lying resonances n+10Be in different partial and spin states of 11Be. We have found the considerable contribution of the 5/2+ resonance at Ej = 1.23 MeV to the breakup cross-section at 30 MeV/nucleon and lower, while at higher energies the resonance states 3/2− and 3/2+ with the energies Ej = 2.78 and 3.3 MeV, respectively, make most visible contributions. The obtained results are in good agreement with existing experimental data at 69 and 72 MeV/nucleon. Comparison with other theoretical calculations up to 30 MeV/nucleon are also performed.
The developed computational scheme opens new possibilities in the investigation of Coulomb as well as the nuclear breakup of other halo nuclei on heavy and light targets.