Design and testing of compact Mott polarimeters for use in energy- and angle-resolved polarization measurements

[摘要] UHV-compatible Mott polarimeters that employ electron accelerating voltages of $sim$20kV have been designed and tested. The efficiency of the polarimeters, $sim$3 $imes$ 10$sp{-5}$, is competitive with those provided by other polarimeters, but the present polarimeters are considerably simpler and more compact. The scattering efficiency of the polarimeters is 2.2 $imes$ 10$sp{-3}$, which makes it possible to accurately measure electron spin polarizations using input beam currents as low as 10$sp{-14}$A. One polarimeter design incorporates an in-line retarding potential energy analyzer with an energy resolution $sim$0.5eV, and is suitable for a wide variety of applications requiring energy- and angle-resolved polarization measurements.

[发布机构] Rice University

[效力级别] matter