H Chouaya1, M Smari1,2*, E Dhahri1, MPF Graça3 and MA Valente3 Author Affiliations 1Laboratoire de Physique Appliquée, Faculté des Sciences, Université Sfax, Tunisia 2LIB Phys-UC, Department of Physic, University Coimbra, Portugal 3I3N Physics Department, Aveiro, Received: April 25, 2022 | Published: May 05, Corresponding author: Smari, Laboratoire B. P. 1171, Sfax 3000, LIB P-3004-516 DOI: 10....