Electron-Helium Atom Collisions in the Presence of a Bichromatic Laser Field

• 来源期刊: 理论物理通讯（英文版）
• 年，卷（期）: 2008,（8）
• 页码范围: 477-480
• 页数: 4页
• 语种: 英文

摘要

The differential cross section (DCS) for electron-helium atom collisions in the presence of a bichromatic CO2 laser field is investigated as a function of the scattering angle 0 by employing first-Born approximation (FBA) with a simple screening electric potential. We discuss in detail the influence of the scattering geometry, the photon energy and the number of photons exchanged on the DCSs. These illustrate that the three factors have important effects on the elastic scattering and the screening electric potential is effective.