Darmstadt 2008 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 27: Posters: Electron scattering and recombination

A 27.2: Poster

Donnerstag, 13. März 2008, 16:30–18:30, Poster C3

The high efficiency spin-resolved electron detection in a mini-Mott analyzer — •Rustam Berezov and Joachim Jacoby — Institut für Angewandte Physik, Max von Laue-Str. 1, D-60438 Frankfurt / Main

The investigation of spin-dependent measurements with electron polarimeters gives a lot of additional information concerning many physical processes. The main problem in polarized electron studies at keV-particle energy is now not longer the source intensity, but rather the low efficiency of usual electron polarimeters, like Mott scattering polarimeter. We present here the design and performance of a compact mini-Mott spin analyzer of electron polarization. Due to the compact small size the cylindrical-electrode Mott polarimeter has a higher efficiency which is defined as ratio I/Io of intensity for scattered electrons divided by the initial current. In turn the increasing efficiency improves the figure of merit.