Electron collisions with laser cooled and trapped metastable helium atoms: total scattering cross sections.
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.
Uhlmann
L J
LJ
Atomic and Molecular Physics Laboratories, Research School of Physical Sciences and Engineering, Australian National University, Canberra, Australian Capital Territory 0200, Australia.
Dall
R G
RG
Truscott
A G
AG
Hoogerland
M D
MD
Baldwin
K G H
KG
Buckman
S J
SJ