Low-energy electron scattering from gaseous CS2: angular distributions and effect of exchange forces

A comprehensive and comparative study of elastic electron scattering from OCS and CS2 in the energy region from 1.2 to 200 eV

“…Our Q e agrees well with the previous result of Sohn et al 27 below 5 eV, but no other experimental data are available for comparison from 8 to 200 eV. Six theoretical approaches are available for comparison, those of Lynch et al, 31 Lee et al, 41 Bettega et al, 42,43 Gianturco and Stoecklin, 44 and Raj and Tomar, 30 as well as the present IAM-SCAR calculation. The calculation of Raj and Tomar 30 (only above 100 eV) considerably overestimates the experimental measurement.…”

“…Figure 4 shows the overall behavior of the elastic differential cross sections for CS 2 at energies between 1.5 and 200 eV. The present calculated results (IAM-SCAR and CMS) are also presented and compared, as are the Schwinger variational calculations of Lee et al, 41 the SMC results of Bettega et al, 42,43 the results from the calculation of Gianturco and Stoecklin 44 and the IAM calculations of Raj and Tomar. 30 We also compare with the other available experimental results, those of Sohn et al 27 and Allan.…”

Cross sections for electron scattering by carbon disulfide in the low- and intermediate-energy range

“…In this study, a complex optical potential is used to represent the electron-molecule interaction, whereas a combination of the ISVM [17] and the DWA [18,19] is used to solve the [11]; full circles, experimental data of Sohn et al [1]; asterisks, measured data of Kitajima, as quoted in Ref. [11].…”

“…Bettega et al [9,10] used the Schwinger multichannel method with pseudopotentials to calculate elastic cross sections for energies up to 50 eV at the static-exchange [9] and static-exchange plus polarization [10] levels of approximation. Very recently, elastic DCSs, ICSs, and momentum-transfer cross sections (MTCSs) were calculated by Gianturco and Stoecklin [11] for energies ranging from near zero up to 100 eV. Nevertheless, for energies above 100 eV there are no DCS calculations beyond the IAM approximation in the literature.…”

“…The objective of the present work is twofold: (i) to study the angular distribution of DCSs at low incident energies (up to 5 eV) where recent calculations [10,11] exhibited significant disagreement with experiments and (ii) to evaluate the influence of absorption effects on elastic e − -CS 2 scattering in the intermediate and high incident energy range where almost all inelastic channels (electronic excitations, ionization, etc.) are open.…”