The Universe Evolution: Astrophysical and Nuclear aspects

info:eu-repo/semantics/publishe

Reactions with 8Li at RIBRAS (Radioactive Ion Beams in Brasil): Astrophysical and nuclear structure applications

We present the results of the 8Li(p, α) 5He reaction of astrophysical interest, measured at the RIBRAS system. It was realized in inverse kinematics and using a thick CH 2 polyethylene target. Using the thick target method the complete excitation function could be measured between E cm=0.2-2.5 MeV, which includes the Gamow peak energy region. The contribution of contaminating 12C( 8Li, 4He) 16N and 12C( 7Li, 4He) 15N reactions is still under analysis. However, if the cross section is expected to be somewhat reduced, the subtraction of the contamination will not change the general feature of the excitation function. © 2012 American Institute of Physics.SCOPUS: cp.pinfo:eu-repo/semantics/publishe

On the hyperdeformed state of the 36Ar nucleus

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Exotic shapes and clusterization of atomic nuclei

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Systematic study of optical potential strengths in reactions on Sn 120 involving strongly bound, weakly bound, and exotic nuclei

We present new experimental angular distributions for the elastic scattering of Li6+Sn120 at three bombarding energies. We include these data in a wide systematic involving the elastic scattering of He4,6,Li7, Be9,B10, and O16,18 projectiles on the same target at energies around the respective Coulomb barriers. Considering this data set, we report on optical model analyses based on the double-folding São Paulo potential. Within this approach, we study the sensitivity of the data fit to different models for the nuclear matter densities and to variations in the optical potential strengths.Ministerio de Ciencia, Innovación y Universidades PGC2018-096994-B-C21Ministerio de Economía y Competitividad FIS2017-88410-PEuropean Union's Horizon 2020 654002Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) 2018/09998-8, 2017/05660-0Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) 407096/2017-5, 306433/2017-6Instituto Nacional de Ciência e Tecnologia: Física Nuclear e Aplicações 464898/2014-

Alpha-particle production in the 6He+120Sn collision

Alpha particle energy distributions in the 6He+120Sn collision have been measured at 7 bombarding energies above the Coulomb barrier. A phenomenological analysis of the centroids of the experimental distributions was performed and compared with the expected alpha-particle energies from breakup and neutron transfer reactions. Q-optimum conditions were determined using the Brinks formula for the di-neutron transfer reaction. A comparison of the measured alpha-particle production cross-sections with Continuum Discretized Coupled Channels (CDCC) calculations for breakup is presented.Fundacao de Amparo `a Pesquisa no Estado de Sao Paulo 2013/22100-7, 2014/19666-1Conselho Nacional de Desenvolvimento Cientıfico e Tecnologico 308935/2018-7Ministerio de Economía y Competitividad FIS2017-88410-PEuropean Union 65400