Polarimeter
OwnerElaine Ann Seddoninventor
Life of this patent
Estimating the term…
Abstract
A polarimeter for analysing the electron-spin polarisations of an electron beam, the polarimeter comprising first target means comprising a layer of material for scattering a beam of electrons in directions dependent upon the transverse spin-orientation of the incident electrons, and first detector means for detecting the scattered electrons. The polarimeter also having second target means comprising a layer of ferromagnetic material, magnetising means for magnetising the ferromagnetic layer such that the second target means will transmit a beam of electrons at a rate dependent upon the longitudinal spin-orientation of the electrons, and second detector means for detecting the transmitted electrons.
Claims19
A polarimeter for analysing the electron-spin polarisations of an electron beam, the polarimeter comprising:
- first target means comprising a layer of material for scattering a beam of electrons in directions dependent upon the transverse spin-orientation of the incident electrons,
- first detector means for detecting the scattered electrons,
- second target means comprising a layer of ferromagnetic material,
- magnetising means for magnetising the ferromagnetic layer such that the second target means will transmit a beam of electrons at a rate dependent upon the longitudinal spin orientation of the electrons, and
- second detector means for detecting the transmitted electrons.
A method of determining the longitudinal and transverse components of a spin-polarisation of an electron beam, the method comprising:
- directing the beam of electrons accelerated to relatively high energy at a first target means comprising a layer of material for scattering a beam of electrons in directions dependent upon the transverse s pin polarisations of the incident electrons,
- detecting electrons which are scattered from he first target means,
- directing the beam of electrons decelerated to relatively low energ second target means comprising a layer of ferromagnetic material magnetised such that the second target means will transmit a beam of electrons at a rate dependent upon the longitudinal spin-orientation of the electrons, and
- detecting electrons transmitted by the second target means.
Dependencies are inferred from the claim text.