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