Elastic electron scattering by ethyl vinyl ether

We report measured and calculated results for elastic scattering of low-energy electrons by ethyl vinyl ether (ethoxyethene), a prototype system for studying indirect dissociative attachment processes that may play a role in DNA damage. The integral cross section displays the expected ${\pi }^{*}$ shape resonance. The agreement between the calculated and measured cross sections is generally good.

Figure 1

Schematic of the structure of ethyl vinyl ether in its minimum-energy conformation.

Figure 2

Differential cross sections for elastic electron scattering by ethyl vinyl ether. Solid blue circles with error bars are present measurements, open blue circles are extrapolated values, and the solid red curve is the present ab initio calculation. The collision energy is indicated in each panel.

Figure 3

As in Fig. 2 but at higher collision energies.

Figure 4

Integral elastic (top panel) and momentum-transfer (bottom panel) cross sections for electron scattering by ethyl vinyl ether. Blue circles with error bars are measured values and solid red lines are calculated results. In the upper panel, the long-dashed red line is the calculated integral cross section without the Born-dipole correction, and the short-dashed green line and dot-dashed indigo line are, respectively, its ${}^2{A}^{\prime }$ and ${}^2{A}^{″}$ components.