Principle
The composition of various alloys is analysed with the aid of polychromatic X-rays. The energy of the characteristic fluorescence lines of the alloy constituents is analysed with the aid of a semiconductor detector and a multichannel analyser. The alloy constituents are identified by comparing the line energies with the corresponding table values.
Tasks
- Calibrate the semiconductor energy detector with the aid of the characteristic radiation of the tungsten X-ray tube.
- Record the spectra of the fluorescence radiation that is generated by the samples.
- Determine of the energy values of the corresponding fluorescence lines and compare the experimental energy values with table values in order to identify the alloy constituents.
Learning objectives
- Bremsstrahlung
- characteristic X-radiation
- energy levels
- fluorescent yield
- semiconductor energy detectors
- multichannel analysers