Resonant excitation of molecules by low-energy electrons

Low Energy Elastic Scattering of Electrons by Water Molecules

We report calculated elastic differential cross sections for electronscattering by H 2 0 at 15, 20 and 30 eV, using the iterative Schwinger variational method in a fixed-nuclei static-exchange approximation. Our results compare very favorably with recent experimental and theoretical ~esu l t s at a11 angles above 30 degrees. Nevertheless, as used here, this approximation can xiot describe corre...

Excitation of vibrational quanta in furfural by intermediate-energy electrons.

We report cross sections for electron-impact excitation of vibrational quanta in furfural, at intermediate incident electron energies (20, 30, and 40 eV). The present differential cross sections are measured over the scattered electron angular range 10°-90°, with corresponding integral cross sections subsequently being determined. Furfural is a viable plant-derived alternative to petrochemicals...

Scattering of low-energy electrons by polar molecules: An analytic approach

The scattering of low-energy electrons by polar molecules is considered. The excitation to the rotational states in the sudden approximation and the effect of the Coulomb dipole force to all orders are taken into account. Analytic expressions for the scattering amplitudes are obtained. These are valid for arbitrarily large dipole moments of the molecule. Differential and momentum-transfer cross...

Resonant vibrational-excitation cross sections and rate constants for low-energy electron scattering by molecular oxygen

Resonant vibrational-excitation cross sections and rate constants for electron scattering by molecular oxygen are presented. Transitions between all 42 vibrational levels of O 2 (X 3 − g) are considered. Molecular rotations are parametrized by the rotational quantum number J , which is considered in the range 1–151. The lowest four resonant states of O − 2 , 2 g , 2 u , 4 − u and 2 − u are take...

Resonant excitation of trapped molecules in a molecular synchrotron