Estudo da interação de elétrons com moléculas relevantes à atmosfera

Abstract

In this work, we present Absolute Elastic Differential (SCDE), Integral Elastic (SCIE) and Momentum-Transfer (SCTM) Cross Sections for electron scattering by n-Butane (C4H10), Benzene (C6H6), Methanol (CH3OH), Ethanol (C2H5OH), 1-propanol (C3H7OH) and 2-propanol (C3H7OH). The measurements were performed for incident energies of electron in the range of 200 eV to 1000 eV. The methodology used is based in the crossed electron beammolecular beam geometry. The technique used for the normalization of measurements is the Relative Flow Technique. For better understanding of the kinetics involved in the gas flow rate, a systematic study was performed for the noble gases: He, Ne, Ar, Kr e Xe at various pressures, determining how to obtain these data through the decay of pressure as a function of time. The absolutes values of DCS, ICS and MTCS obtained experimentally were compared with values calculated by the Independent-Atom Model (MAI) and the Additivity Rule (RA).