Spin-polarization detector

A spin-polarization detector comprising:

• acceleration means for accelerating a measured electron beam having spin polarization;
• a plurality of metal targets straightly aligned one behind another along the traveling direction of the measured electron beam for scattering the accelerated electron beam;
• and
• a plurality of detection means arranged along the traveling direction of the measured electron beam for detecting the intensities of electron beams scattered from the metal targets.

A spin-polarization detector comprising:

• acceleration means for accelerating a measured electron beam having spin polarization;
• a plurality of metal targets straightly aligned one behind another along the traveling direction of the measured electron beam for scattering the accelerated electron beam;
• and
• a plurality of fluorescent screens arranged along the traveling direction of the measured electron beam for detecting the intensities of electron beams scattered from the metal targets, an optical signal from each fluorescent screen being transmitted to photo-electric conversion means through an optical guide, to be converted into an electric signal.

A spin-polarization detector comprising:

• acceleration means applying a high voltage for accelerating an electron beam to be measured, from a ground potential region towards a high voltage region;
• a metal target for scattering the accelerated electron beam, said metal target being disposed in said high voltage region and being applied with said high voltage by said acceleration means;
• a fluorescent screen for detecting the scattered electron beam from said metal target and outputting an optical signal, said fluorescent screen being disposed in said high voltage region and being applied with said high voltage as applied to said metal target by said acceleration means;
• photoelectric conversion means for converting an inputted optical signal into an electric output signal, said photoelectric conversion means being disposed in said ground potential region;
• and
• an optical guide for transmitting the optical output signal from said fluorescent screen to said photoelectric conversion means.