title: Electron collisions with laser cooled and trapped metastable helium atoms: total scattering cross sections.
abstract: Absolute measurements of total scattering cross sections for low energy (5-70 eV) electrons by metastable helium (2(3)S) atoms are presented. The measurements are performed using a magneto-optical trap which is loaded from a laser-cooled, bright beam of slow He(2(3)S) 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.
authors.affiliation: Atomic and Molecular Physics Laboratories, Research School of Physical Sciences and Engineering, Australian National University, Canberra, Australian Capital Territory 0200, Australia.
authors.forename: L J
authors.initials: LJ
authors.lastname: Uhlmann
authors.forename: R G
authors.initials: RG
authors.lastname: Dall
authors.forename: A G
authors.initials: AG
authors.lastname: Truscott
authors.forename: M D
authors.initials: MD
authors.lastname: Hoogerland
authors.forename: K G H
authors.initials: KG
authors.lastname: Baldwin
authors.forename: S J
authors.initials: SJ
authors.lastname: Buckman