Elastic Electron Collisions with Cyanoacetylene

A comprehensive theoretical investigation involving electron collisions with cyanoacetylene is reported. Differential cross sections (DCSs), integral cross sections (ICSs), and momentum-transfer cross sections (MTCSs) for the elastic electron scattering were calculated using the Schwinger multichannel (SMC) method at the static-exchange plus polarization (SEP) level of approximation for energies ranging from 0.5 to 30 eV. The Schwinger variational method combined with Pade's approximants (SVPA), considering static-exchange-polarization plus absorption (SEPA), was also applied for impact energies from 0.1 to 1000 eV. These results were complemented by calculations performed according to the screen-corrected independent atom model (SCIAM). Furthermore, original measurements of absolute elastic (DCSs) at 20 eV were conducted in a crossed-beam apparatus. The theoretical results display an outstanding agreement with each other and an overall agreement with the calculated cross sections available in the literature. The agreement between the calculated and measured results is quite encouraging, further validating the thoroughness of the current research.