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K and L absorption edges of X-rays / Moseley's law and the Rydberg constant

K and L absorption edges of X-rays / Moseley's law and the Rydberg constant

Item no.: P2541205
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Principle

Samples of various elements of different atomic numbers are irradiated with X-rays of a known spectral distribution. The energy of the transmitted intensities is analyzed using a monocrystal analyzer. Subsequently, the Rydberg constant and the screening constants are calculated from the energy of the absorption edges.

Tasks

  1. Record the intensity of the X-rays emitted from the copper anode as a function of the Bragg angle using a LiF monocrystal as analyzer. Determine the K absorption edges of different absorber materials.
  2. Calculate the Rydberg constant and the screening constants from the energy values of  the K absorption edges.
  3. Find the L absorption edges of different absorber materials.
  4. Calculate the Rydberg constant from the energy values of the L absorption edges.

What you can learn about

  • X-ray Bremsstrahlung
  • Characteristic radiation
  • Bragg equation
  • Bohr's atomic model
  • Atomic energy level scheme
  • Moseley's law
  • Rydberg constant
  • Screening constant

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