Browsing by Author "Johnson, PD"

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Performance of a Mott detector for undulator-based spin-resolved spectroscopy
(2002-11-01)
Huang, DJ
;
Wu, WP
;
Chen, J
;
Chang, CF
;
Chung, SC
To measure spin-polarized core-level electron spectra, a spectrometer equipped with a highly efficient retarding-potential Mott spin polarimeter using undulator-based soft-x-ray beamlines has been set up. With a thin film of Au as a target this polarimeter has an efficiency estimated to be similar to2x10(-4). The performance of this system for spin-polarized spectroscopy has been tested using core-level spin-polarized photoemission of magnetic and nonmagnetic thin films excited with linearly and circularly polarized light, respectively. Measurements using a new spin-resolved absorption technique are also discussed. (C) 2002 American Institute of Physics.