Abstract
This article presents a theoretical investigation of the differential, integrated, elastic, inelastic, total, momentum-transfer, and viscosity cross-sections, along with the total ionization cross-section, for elastically scattered electrons and positrons from a carbon dioxide (CO2) molecule in the incident energy range of 1 eV ≤Ei≤ 1 MeV. In addition, for the first time, we report the spin polarization of e±−CO2 scattering systems. The independent atom model (IAM) with screening correction (IAMS) using a complex optical potential was employed to solve the Dirac relativistic equation in partial-wave analysis. The comparison of our results with the available experimental data and other theoretical predictions shows a reasonable agreement in the intermediate- and high-energy regions.
Highlights
Projectile–atom/molecule scatterings are very common in many natural and manmade systems, such as gaseous plasma [1], planetary atmospheres [2], radiation chemistry [3], radiobiology [3], mass spectrometry [4], etc
We report our calculations of the differential cross-section (DCS), total (elastic + inelastic) cross-section (TCS), integrated elastic crosssection (IECS), inelastic cross-section (INCS), momentum-transfer cross-section (MTCS), viscosity cross-section (VCS), and total ionization cross-sections (TICSs) for both electron and positron scattering from a CO2 molecule over a wider energy range of 1 eV ≤ Ei ≤ 1 MeV
The IAM with screening correction (IAMS) approach [31] has already proven to be successful in calculating various observables for electron and positron scattering from a molecular carbon monoxide target
Summary
Projectile–atom/molecule scatterings are very common in many natural and manmade systems, such as gaseous plasma [1], planetary atmospheres [2], radiation chemistry [3], radiobiology [3], mass spectrometry [4], etc. Baluja and Jain [27] employed a model of the complex optical potential to calculate the total (elastic + inelastic) cross-section (TCS) for a positron in the range of 1–5000 eV using several molecular targets, including CO2. We report our calculations of the DCS, TCS, IECS, INCS, MTCS, VCS, and TICS for both electron and positron scattering from a CO2 molecule over a wider energy range of 1 eV ≤ Ei ≤ 1 MeV. The IAMS approach [31] has already proven to be successful in calculating various observables for electron and positron scattering from a molecular carbon monoxide target In this method, the target molecule is approximately replaced by its constituent atoms in the corresponding positions. The method is capable of predicting quite reliable cross-section data without adjusting the parameter, and produces theoretical results where experimental data are not available
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