SPATAFORA, A.CAPPUZZELLO, F.CARBONE, D.CAVALLARO, M.LAY, J.A.ACOSTA, L.AGODI, C.BONANNO, D.BONGIOVANNI, D.BOZTOSUN, I.BRISCHETTO, G.A.BURRELLO, S.CALABRESE, S.CALVO, D.LOMELI, E.R.C.CIRALDO, I.COLONNA, M.DELAUNAY, F.DESHMUKH, N.FERREIRA, J.L.FINOCCHIARO, P.FISICHELLA, M.FOTI, A.GALLO, G.HACISALIHOGLU, A.IAZZI, F.LANZALONE, G.LENSKE, H.LINARES, R.PRESTI, D.L.LUBIAN, J.MORALLES, M.MUOIO, A.OLIVEIRA, J.R.B.PAKOU, A.PANDOLA, L.PETRASCU, H.PINNA, F.REITO, S.RUSSO, G.SANTAGATI, G.SGOUROS, O.SOLAKCI, S.O.SOUKERAS, V.SOULIOTIS, G.TORRESI, D.TUDISCO, S.YILDIRIM, A.ZAGATTO, V.A.B.2019-12-182019-12-182019SPATAFORA, A.; CAPPUZZELLO, F.; CARBONE, D.; CAVALLARO, M.; LAY, J.A.; ACOSTA, L.; AGODI, C.; BONANNO, D.; BONGIOVANNI, D.; BOZTOSUN, I.; BRISCHETTO, G.A.; BURRELLO, S.; CALABRESE, S.; CALVO, D.; LOMELI, E.R.C.; CIRALDO, I.; COLONNA, M.; DELAUNAY, F.; DESHMUKH, N.; FERREIRA, J.L.; FINOCCHIARO, P.; FISICHELLA, M.; FOTI, A.; GALLO, G.; HACISALIHOGLU, A.; IAZZI, F.; LANZALONE, G.; LENSKE, H.; LINARES, R.; PRESTI, D.L.; LUBIAN, J.; MORALLES, M.; MUOIO, A.; OLIVEIRA, J.R.B.; PAKOU, A.; PANDOLA, L.; PETRASCU, H.; PINNA, F.; REITO, S.; RUSSO, G.; SANTAGATI, G.; SGOUROS, O.; SOLAKCI, S.O.; SOUKERAS, V.; SOULIOTIS, G.; TORRESI, D.; TUDISCO, S.; YILDIRIM, A.; ZAGATTO, V.A.B. 20Ne + 76Ge elastic and inelastic scattering at 306 MeV. <b>Physical Review C</b>, v. 100, n. 3, p. 034620-1 - 034620-8, 2019. DOI: <a href="https://dx.doi.org/10.1103/PhysRevC.100.034620">10.1103/PhysRevC.100.034620</a>. Disponível em: http://repositorio.ipen.br/handle/123456789/30457.2469-9985http://repositorio.ipen.br/handle/123456789/30457Background: Double charge exchange (DCE) nuclear reactions have recently attracted much interest as tools to provide experimentally driven information about nuclear matrix elements of interest in the context of neutrinoless double-β decay. In this framework, a good description of the reaction mechanism and a complete knowledge of the initial and final-state interactions are mandatory. Presently, not enough is known about the details of the optical potentials and nuclear response to isospin operators for many of the projectile-target systems proposed for future DCE studies. Among these, the 20Ne + 76Ge DCE reaction is particularly relevant due to its connection with 76Ge double-β decay. Purpose: We intend to characterize the initial-state interaction for the 20Ne + 76Ge reactions at 306 MeV bombarding energy and determine the optical potential and the role of the couplings between elastic channel and inelastic transitions to the first low-lying excited states. Methods: We determine the experimental elastic and inelastic scattering cross-section angular distributions, compare the theoretical predictions by adopting different models of optical potentials with the experimental data, and evaluate the coupling effect through the comparison of the distorted-wave Born approximation calculations with the coupled channels ones. Results: Optical models fail to describe the elastic angular distribution above the grazing angle (≈9.4◦). A correction in the geometry to effectively account for deformation of the involved nuclear systems improves the agreement up to about 14◦. Coupled channels effects are crucial to obtain good agreement at large angles in the elastic scattering cross section. Conclusions: The analysis of elastic and inelastic scattering data turned out to be a powerful tool to explore the initial and final-state interactions in heavy-ion nuclear reactions at high transferred momenta.034620-1 - 034620-8openAccessneon 20germanium 76isotopescharge-exchange reactionselastic scatteringinelastic scatteringdecayscattering amplitudesArtigo de periódico310010.1103/PhysRevC.100.034620https://orcid.org/0000-0002-2664-553176.31683.00