Spin detector

Abstract

A measured electron beam having a polarization vector as represented by arrow is irradiated to a ferromagnetic target made of an iron single crystal through a polarization vector rotator comprising a magnetic field generation coil and an electrostatic lens. A magnetic field generator is coupled with the target and aligns the direction of magnetization of the target in a direction represented by arrow. An oscillator for providing a rotation signal of the polarization vector of the measured electron beam is connected to the polarization vector rotator. The current absorbed by the target is detected and amplified by a current amplifier. A lock-in amplifier detects the phase and the magnitude of an A.C. component using the signal from the oscillator as a reference signal. The magnitude of the D.C. component of the absorbed current is detected by a D.C. current detector.

Dependencies are inferred from the claim text.