Comparative tests of conventional and retarding-potential Mott polarimeters

Autor:	V. N. Petrov, A. S. Kamochkin, M. S. Galaktionov
Rok vydání:	2001
Předmět:	Physics Reflection high-energy electron diffraction Optics Electron spectrometer Scanning electron microscope business.industry Detector Electron Mott scattering business Instrumentation Electron spectroscopy Particle detector
Zdroj:	Review of Scientific Instruments. 72:3728-3730
ISSN:	1089-7623 0034-6748
DOI:	10.1063/1.1396658
Popis:	The performance of a spherical field-free and a conical retarding-potential Mott polarimeter is compared. The stability of the detector signal with respect to a change in the position of the incoming electron beam is studied for two different primary electron beam energies. Shifting the incoming electron beam by 0.6 mm does not change the counting rate in the spherical field-free detector but induces a 7% or 18% change in the conical retarding-potential detector when using 1600 and 500 eV electrons, respectively. This may result in an error of the measured electron spin polarization.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b0e7fbfce62e5ad871b745a8ff8e1001 https://doi.org/10.1063/1.1396658 Zobrazit plný text záznamu