Electron collisions with laser cooled and trapped metastable helium atoms: total scattering cross sections
Date
2005
Authors
Uhlmann, Linda
Dall, Robert
Truscott, Andrew
Hoogerland, Maarten
Buckman, Stephen
Baldwin, Kenneth
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American Physical Society
Abstract
Absolute measurements of total scattering cross sections for low energy (5–70 eV) electrons by metastable helium (23S) atoms are presented. The measurements are performed using a magneto-optical trap which is loaded from a laser-cooled, bright beam of slow He(23S) atoms. The data are compared with predictions from convergent close coupling and R matrix with pseudostate calculations, and we find good agreement between experiment and theory.
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Keywords
Keywords: Close coupling; Laser-cooled; Low energy; Scattering cross sections; Atoms; Cooling; Electromagnetic wave scattering; Electron mobility; Electron traps; Laser applications; Helium
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Physical Review Letters
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Journal article
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