Study of the Dynamics of Light Heavy-Ion Reactions with the use of Beam Pulsing System at the University of Sao Paulo Peletron Accelerator

• Grant number: 97/04843-8
• Support Opportunities: Research Projects - Thematic Grants
• Start date: March 01, 1998
• End date: February 28, 2009
• Field of knowledge: Physical Sciences and Mathematics - Physics - Nuclear Physics
• Principal Investigator: Nelson Carlin Filho
• Grantee: Nelson Carlin Filho
• Host Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated research grant(s): 00/05694-0 - Time scales for the binary decay of light systems., AR.EXT; 00/05693-4 - Inhibition of light nuclei fusion process: break-up and size effects., AR.EXT
• Associated scholarship(s): 05/01770-8 - Study of nuclear reactions of astrophysical interest through Trojan Horse method, BP.PD

Abstract

We intend to investigate at the University of São Paulo Pelletron Laboratory the dynamics of nuclear reactions by employing techniques which allow the precise determination of mass, atomic number, energy and angle of the reaction products. In the last three years, a lot of effort has been put into the construction of a large multipurpose scattering chamberand several detectors for gamma rays (BaF2 detectors) and charged particles (multiwire position sensitive detectors and telescopes with gas, Si and Csl detectors). In order to complete the apparatus for obtaining more information about the reaction products, we are proposing the construction of two large neutron detectors consisting of cells filled with liquid scintillator and coupled to photo multipliers at each extremity. With this geometry, one can determine with precision the energy and position of the incident neutrons which can also be discriminated from gamma rays by means ofthe pulse shape discrimination technique. (AU)