Construction of the spin-polarized slow positron beam with the RI source

摘要

The electrostatic slow-positron beam is constructed by using ~(22)Na sourse. We design the elec-trostatic lens, the system of the detector, and the Wien filter for the experiment's system of the spin-polarized slow positron beam. The reemitted spin-polarized slow-positron spectroscopy is proposed for studying magnetic thin films and magnetic multilayers. We calculated the depolarized positron fractions in the Fe thin film Fe(10nm)/Cu(substrate) and the multilayers Cu(lnm)/Fe(10nm)/Cu(substrate).