Efeito Ramsauer-Townsend: espalhamento de elétrons de Xe a baixas energias

Abstract

The research sought to demonstrate from the experimental study of electron scattering by xenon atoms at low energies the Ramsauer-Townsend effect and thus compare the experimental results and theoretical literature approaches. This study was conducted in Modern Physics Laboratory at the Federal University da Fronteira Sul, submitting a gas thyratron (mod. 2D21) at different temperature conditions. Since such an effect would require the wave theory of quantum mechanics, this analysis was not possible from purely classical considerations, thus the formulation of scattering theory given by quantum mechanics is needed to explain this phenomenon. Thus, the research was to observe the Ramsauer-Townsend effect experimentally and compare with the theoretical results available in the literature. After the study was proposed an experimental script undergraduate level for the study of this effect, providing a discussion of the use of the Schrodinger equation in scattering phenomena at this level of education.