title: Role of adsorption effects on absolute electron-molecule cross-section calibration using the relative flow technique.
abstract: In this work, we report an experimental investigation on relative flow-rate determination for vapors. The mechanism of adsorption-desorption of vapors on surfaces is considered. In contrast to previous investigations, our study shows that the adsorption of vapors on surfaces may significantly affect the flow-rate determination and consequently the measured cross sections. Particularly, for water, it can result in an overestimation of 35% in the cross sections.
authors.affiliation: Departamento de Física, UFSC, Florianópolis/SC, Brazil. mgphomem@fsc.ufsc.br
authors.forename: M G P
authors.initials: MG
authors.lastname: Homem
authors.forename: I
authors.initials: I
authors.lastname: Iga
authors.forename: R T
authors.initials: RT
authors.lastname: Sugohara
authors.forename: I P
authors.initials: IP
authors.lastname: Sanches
authors.forename: M T
authors.initials: MT
authors.lastname: Lee