Electron collisions with laser cooled and trapped metastable helium atoms: total scattering cross sections
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Uhlmann, Linda; Dall, Robert; Truscott, Andrew; Hoogerland, Maarten; Buckman, Stephen; Baldwin, Kenneth
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.
|Collections||ANU Research Publications|
|Source:||Physical Review Letters|
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