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| Author(s): |
Erich Leistenschneider
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | São Paulo. |
| Institution: | Universidade de São Paulo (USP). Instituto de Física (IF/SBI) |
| Defense date: | 2014-04-15 |
| Examining board members: |
Alinka Lepine;
Marcos Aurelio Gonzalez Alvarez;
Paulo Roberto Silveira Gomes
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| Advisor: | Alinka Lepine |
| Abstract | |
Proton-induced reactions are important in the study of the destruction of 8Li in some astrophysical scenarios. In this work, the cross sections for the reactions 8Li(p,p), 8Li(p,α) and 8Li(p,d) were measured in inverse kinematics between Ecm = 0.7 and 2.2 MeV. A highly pure 8Li beam selected by RIBRAS System in the Pelletron Laboratory (IF-USP), São Paulo, was used impinging on a thick polyethylene target ((CH2)n , 7.7(8) mg/cm2), a proton-rich plastic. The reaction products were detected by a telescope formed by silicon surfasse barrier detectors placed at a foward angle. The measured excitation functions were analysed through the R-matrix methodology and could provide information about poorly known high-lying resonances of the 9Be compound nucleus. The importance of other decay channels and the consequences of the studied reactions on nucleosynthesis are also discussed. (AU) | |
| FAPESP's process: | 11/15904-7 - Study of the p(8Li,p)8Li elastic scattering at low energies |
| Grantee: | Erich Leistenschneider |
| Support Opportunities: | Scholarships in Brazil - Master |