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- Electron_spectrometer abstract "In an Electron spectrometer, an incoming beam of electrons is bent with electric or magnetic fields. As higher energy electrons will be bent less by the beam, this produces a spatially distributed range of energies. Electron spectrometers are used on a range of scientific equipment, including particle accelerators, transmission electron microscopes, and astronomical satellites.An electrostatic electron spectrometer uses the electric field, which cause electrons to move along field gradients, whereas magnetic devices cause electrons to move at right angles to the field. Magnetic fields will act in a direction perpendicular to the electron propagation, thereby conserving velocity, whereas electrostatic fields will cause electrons to move along the field gradient, which may change electron energies if the component of the direction of propagation and field gradients are not perpendicular. Owing to these effects, sector based designs are commonly used in electron spectrometers.The effective potential in the solution of motion in a magnetic or electric system with rotational symmetry leads to radial focusing onto a mean radius. By superposition of a quadrupole field axial focusing is possible while weakening the radial focusing, until the astigmatism vanishes. By breaking the rotational symmetry a bit and varying the electrostatic potential along the mean path of the spherical aberration is minimized.The spectrometer can use entrance and exit slits or use a small source, which only emits into specific angle and a small detector. Photoelectron spectra from single crystals exhibit a dependency on the emission angle, so that the entrance slit is needed. All the electrons from an isotopic source may be sucked off and focused into a directed beam (much like in an electron gun), which can then be analyzed. A position sensitive detector can detect the energy along one direction and depending on the additional optics lateral resolution or one angle along the other direction.Electrostatic spectrometers preserve the spin, which can be resolved afterwards.".
- Electron_spectrometer wikiPageID "2390915".
- Electron_spectrometer wikiPageRevisionID "544085543".
- Electron_spectrometer hasPhotoCollection Electron_spectrometer.
- Electron_spectrometer subject Category:Electron_beam.
- Electron_spectrometer subject Category:Spectrometers.
- Electron_spectrometer type Artifact100021939.
- Electron_spectrometer type Device103183080.
- Electron_spectrometer type Instrument103574816.
- Electron_spectrometer type Instrumentality103575240.
- Electron_spectrometer type MassSpectrometer103726516.
- Electron_spectrometer type Object100002684.
- Electron_spectrometer type OpticalInstrument103852280.
- Electron_spectrometer type PhysicalEntity100001930.
- Electron_spectrometer type Spectrometers.
- Electron_spectrometer type Spectroscope104273064.
- Electron_spectrometer type Whole100003553.
- Electron_spectrometer comment "In an Electron spectrometer, an incoming beam of electrons is bent with electric or magnetic fields. As higher energy electrons will be bent less by the beam, this produces a spatially distributed range of energies.".
- Electron_spectrometer label "Electron spectrometer".
- Electron_spectrometer label "مطياف الإلكترونات".
- Electron_spectrometer sameAs m.078p2d.
- Electron_spectrometer sameAs Q5358188.
- Electron_spectrometer sameAs Q5358188.
- Electron_spectrometer sameAs Electron_spectrometer.
- Electron_spectrometer wasDerivedFrom Electron_spectrometer?oldid=544085543.
- Electron_spectrometer isPrimaryTopicOf Electron_spectrometer.