Zur Polarisation langsamer Elektronen durch Streuung an Quecksilber zwischen 180 und 1700 eV

Physics

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Scientific paper

Angular and energy dependence of the polarization P of slow electrons scattered elastically by a mercury-atom beam have been measured. The angular resolution being comparatively high (about ±1°), the results could be compared directly with uncorrected theoretical values and high polarizations (up to ¦ P¦=0.85±0.05) could be observed. The polarization was measured by a Mott-detector, the electrons scattered by the mercury atoms having been accelerated to 120 keV. The high yield of this detector made up for the rather low intensity of the observed beam caused by the high angular resolution and resulted in low statistical errors. The experimental results, which cover the angular range from 30° to 150° and energies from 180eV to 1700eV are in good agreement with the theoretical values of Holzwarth and Meister as well as with those of Bunyan and Schonfelder.

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