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Electron collisions with laser cooled and trapped metastable helium atoms: total scattering cross sections

Uhlmann, Linda; Dall, Robert; Truscott, Andrew; Hoogerland, Maarten; Baldwin, Kenneth; Buckman, Stephen


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.

CollectionsANU Research Publications
Date published: 2005-05-03
Type: Journal article
Source: Physical Review Letters
DOI: 10.1103/PhysRevLett.94.173201


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