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X-rays

X-rays. Nature and origin of X-rays Interaction of X-rays with atoms. Energy Levels for a one electron atom. Energy levels for multielectron atoms. Energy Scale (log). Electronic Transition to inner electron levels.

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X-rays

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  1. X-rays Nature and origin of X-rays Interaction of X-rays with atoms

  2. Energy Levels for a one electron atom

  3. Energy levels for multielectron atoms Energy Scale (log)

  4. Electronic Transition to inner electron levels Partial energy level diagram showing common transitions leading to X–radiation. The most intense lines are indicated by the widest arrows The orbital shells are labelled as K for n=1, L for n=2, M for n=3.

  5. Some Experimental Data

  6. Generation of X-Rays Accellerating Voltage V Mo e-

  7. X-ray emission process Radiative de-excitation Inner shell ionization

  8. Auger Emission Auger electron emission following inner shell ionisation

  9. Fluorescence Yield for K and L shells Probability of a core hole in the K or L shell being filled by a radiative process

  10. X-ray emission from a Silver target Characteristic Silver emission lines areover imposed on a continuous radiation background (Bremsstrahlung radiation) due to deceleration of high-energy electrons. The three curves are in dependence from the electron accelerating voltage V Intensity

  11. X–ray emission from a Mo and Cu target

  12. X-ray absorption It = incident Io = transmitted X-ray intensity m = mass absorption coefficient (characteristic of the absorber)  = density, and x = thickness of absorber.

  13. M L K X-ray absorption by lead Absorption edges

  14. Use of absorption edge as a filter to provide effectively monochromatic X-rays

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