Original Caption The Photoelectric Effect. Cylinders of alkali metal placed on wheel, W, kept clean by knife, K, operated by electromagnet, F. A beam.

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© John Parkinson 1 MAX PLANCK PHOTOELECTRIC EFFECT.
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Presentation transcript:

Original Caption The Photoelectric Effect. Cylinders of alkali metal placed on wheel, W, kept clean by knife, K, operated by electromagnet, F. A beam of light, let in at O, falls on the surface. From Physical Review 7 (1916):362.

Photo-electron has excess energy. Photo-electron is stopped.

X-ray Photo Emission (XPS) Angle-resolved photoemission X-Ray Electron Spectroscopy (XPS) or Electron Spectroscopy for Chemical Analysis (ESCA) is a surface sensitive method with a typical information depth of nm corresponding to atomic or molecular monolayers, determined by the mean free path of electrons. The imnaged and analyzed area varies between um with a sensitivity limit of % of a monolayer corresponding to atoms/cm2 or g within the analyzed volume.

Ultraviolet Photo Emission (UPS) Angle-resolved photoemission X-Ray Electron Spectroscopy (XPS) or Electron Spectroscopy for Chemical Analysis (ESCA) is a surface sensitive method with a typical information depth of nm corresponding to atomic or molecular monolayers, determined by the mean free path of electrons. The imnaged and analyzed area varies between um with a sensitivity limit of % of a monolayer corresponding to atoms/cm2 or g within the analyzed volume.

Links Applets: – – – Images sources: – – – sical_chemistry_i/lectures/photoelectric_6309.asphttp:// sical_chemistry_i/lectures/photoelectric_6309.asp – – – cs/Atomic%20and%20Nuclei/Quantum%20physics/page_5452.htmlhttp:// cs/Atomic%20and%20Nuclei/Quantum%20physics/page_5452.html –

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