New data for the elastic scattering of Be9 from protons were obtained and analyzed together with data from the literature in a coherent coupled-reaction-channels approach. The new measurements were performed in inverse kinematics at 15, 22 and 51 MeV (1.67, 2.44, and 5.67 MeV/nucleon) by detecting the heavy ejectile in the MAGNEX spectrometer. This enabled an almost full angular distribution to be obtained, extending the results to forward angles where calculated values coincide and give the opportunity of proper normalization. Previous inconsistencies in absolute normalization between different data sets are removed. Standard collective model form factors fail to reproduce the inelastic scattering to the 2.43 MeV 5/2- state of Be9, suggesting that a more sophisticated approach based on the cluster structure of Be9 is required to describe this process.

Coherent coupled-reaction-channels analysis of existing and new p + Be 9 data between 1.7 and 15 MeV/nucleon

Cappuzzello F.;Calabrese S.;Carbone D.;Cavallaro M.;Foti A.;Muoio A.;Santagati G.;Spatafora A.;Strano E.;Torresi D.;
2019

Abstract

New data for the elastic scattering of Be9 from protons were obtained and analyzed together with data from the literature in a coherent coupled-reaction-channels approach. The new measurements were performed in inverse kinematics at 15, 22 and 51 MeV (1.67, 2.44, and 5.67 MeV/nucleon) by detecting the heavy ejectile in the MAGNEX spectrometer. This enabled an almost full angular distribution to be obtained, extending the results to forward angles where calculated values coincide and give the opportunity of proper normalization. Previous inconsistencies in absolute normalization between different data sets are removed. Standard collective model form factors fail to reproduce the inelastic scattering to the 2.43 MeV 5/2- state of Be9, suggesting that a more sophisticated approach based on the cluster structure of Be9 is required to describe this process.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.11769/372494
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