Principle
Polychromatic X-rays impinge on a monocrystal under various
glancing angles. The rays are reflected by the lattice planes of
the monocrystal. An energy detector is only used to measure those
radiation parts that interfere constructively. The lattice constant
of the crystal is determined with the aid of the various orders of
diffraction and the energy of the reflected rays.
Tasks
- Energy determination of the X-rays that are reflected at the
lattice planes of the LiF-crystal for various glancing angles or
diffraction orders.
- Calculation of the lattice constant of the LiF-crystal based on
the glancing ngles and associated energy values.
What you can learn about
- Bremsstrahlung
- Characteristic X-radiation
- Energy levels
- Crystal structures
- Bravais lattice
- Reciprocal lattices
- Miller indices
- Bragg scattering
- Interference
- Semiconductor detectors
- Multichannel analysers
1 year warranty