Search

We measured for the first time 7Be elastically scattered nuclei as well as 3,4He reaction products from a 58Ni target at 22.3 MeV beam energy. The data were analyzed within the optical model formalism to extract the total reaction cross section. Extensive kinematical, Distorted Wave Born Approximation (DWBA)and Continuum Discretized Coupled Channel (CDCC) calculations were performed to investigate the 3,4He originating mechanisms and the interplay between different reaction channels.

The work addresses the experience of creating a training school in sustainable livestock farming, to train technicians and producers from public and private institutions and parish governments, who provide their services in the buffer zone of the Golden Heart Protective Forest (BPCO), southern Ecuador. The training process lasted from 2017 to 2019, addressing six modules of a theoretical-practical nature such as: Systemic analysis of the livestock landscape in the Páramo and Alto Andino Forest ecosystems in Ecuador, climate change and livestock, governance and incentives, advice to communities, silvopastoral management and sustainable livestock practices. The results obtained were the increase of good practices in livestock farming in the farms surrounding the BCPO, proper management and conservation of soils and water sources. Part of the feeding of the animals was supplemented, implementation of animal reproduction techniques, agroforestry and silvopastoral management, and application of tools and methodologies to carry out economic analyzes for the improvement of farms. [ABSTRACT FROM AUTHOR]

The interaction of the Radioactive Ion 7Beam Be with the closed proton shell target 58Ni was investigated at two energies around the Coulomb barrier. 7Be scattered ions as well as 3,4He reaction products were measured in a rather wide angular range. The elastic scattering angular distributions were analyzed within the framework of the optical model to extract the total reaction cross section. Extensive theoretical and kinematical calculations were performed to disentangle the origin of 3,4He ions between direct and compound nucleus reactions. [ABSTRACT FROM AUTHOR]

Recent results on the reaction dynamics induced by light radioactive ion beams at Coulomb barrier energies are reviewed. As a general feature, the exotic structure and the weak binding energy of most of these projectiles enhance the reaction probability rather than the fusion cross section, as originally expected. The quest has now moved toward understanding which direct reaction mechanism originates the enhancement. Experimental data showed that n-halo and p-halo nuclei are characterized by a different behavior. Transfer processes enhance the reaction probability for n-halo nuclei, such as 6;8He, while for p-halo nuclei, such as 8B, the breakup channel seems to be mainly responsible for the enhancement. [ABSTRACT FROM AUTHOR]