Elastic and total cross sections for electron-carbon dioxide collisions in the intermediate energy range

Abstract

In this work, we report on a joint theoretical and experimental investigation on electron-CO 2 collisions in the intermediate energy range. More specifically, the elastic differential, integral and momentum transfer cross sections as well as the grand total (elastic+inelastic) cross sections in the 30-500 eV energy range are calculated and reported. A complex optical potential consisting of static, exchange, correlation-polarization plus absorption contributions is used for the description of the electron-molecule interaction. The Schwinger variational iterative method combined with the distorted-wave approximation is applied to calculate the scattering amplitudes. In addition, experimental absolute elastic differential cross sections generated using the relative flow technique are reported in the 100-400 eV range. Comparison between the calculated results and present measured data and also existing experimental and theoretical results is encouraging.

Monte Carlo model of electron energy degradation in a CO2 atmosphere

“…At 30, 40, and 50 eV,t he DCS measurements of Gibson et al [1999], Kanik et al [1989], and Tanaka et al [1998] are in reasonable accord, within the uncertainties of each measurement, and at 50 eV the DCS of Gibson et al [1999] and Register et al [1980] arec onsistent. At 100 eV,t he measured DCS values of Iga et al [1999] are in good agreementw ith Kanike ta l. [1989] and Tanaka et al [1998].…”

Analytic Cross Sections for Electron Collisions With Co, Co2, and H2o Relevant to Edge Plasma Impurities

“…The elastic scattering (Graph 43) and momentum transfer (Graph 44) cross sections were measured by Register et al [40] in the energy range 4-50 eV and by Iga et al [41,42] in the high energy region 100-1000 eV with an estimated uncertainty of ±20%. Tanaka et al [43] reported both cross sections in the energy range 1.5-100 eV.…”

Absorption effects in electron–sulfur-dioxide collisions

“…In our calculation, the absorption effects are taken into account via the use of a complex optical potential to describe the dynamics of the e − -SO 2 interaction, whereas a combination of the iterative Schwinger variational method (ISVM) [30,31] and the distorted-wave approximation (DWA) [32,33] is used to solve the scattering equations. This procedure has been successfully applied to treat electron scattering by a number of molecules [34][35][36][37]. Although the present method is unable to calculate TICS directly, our calculated TACS provide an estimate of the contributions of all inelastic collisions, including both excitation and ionization processes.…”