Electron collisions with laser cooled and trapped metastable helium atoms: total scattering cross sections.
نویسندگان
چکیده
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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عنوان ژورنال:
- Physical review letters
دوره 94 17 شماره
صفحات -
تاریخ انتشار 2005