Research Papers in Physics and Astronomy

 

Date of this Version

3-2013

Citation

PHYSICAL REVIEW A 87, 033414 (2013); DOI: 10.1103/PhysRevA.87.033414

Comments

Copyright © 2013 American Physical Society. Used by permission.

Abstract

Orders of magnitude increases of the cross sections are predicted for laser-assisted low-energy electron-atom scattering (accompanied by absorption of laser photons) as the laser ellipticity is increased. These ellipticity-controlled enhancements are manifestations of the field-free electron-atom scattering dynamics, such as the Ramsauer-Townsend effect in low-energy elastic electron-atom scattering. The strong sensitivity of laser-assisted scattering cross sections to this dynamics and the laser ellipticity is illustrated for e-Ne and e-Ar scattering in both midinfrared (λ = 3.5 μm) and CO2 (λ = 10.6 μm) laser fields of moderate intensities.

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