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X-ray fluorescence and Moseley's law with xyt writer
Principle: The irradiation of strontinum (sulphate), cadmium, indium, iodine and barium (chloride) with soft γ-radiations gives rise to Ka radiations characteristics of these elements. The X-ray spectra are recorded with a γ-spectrometer consisting of a scintillation counter, a pulse height analyser and a recorder. After calibration of the spectrometer, the Rydberg constant is determined from the energies of the X-ray lines, using Moseley's law.
Tasks:
1. Calibration of the γ-spectrometer in the low energy range, using the Ba-resonance line of a 137Cs emitter (32 keV) and the γ-line of 241Am at 59.6 keV.
2. Recording of the X-ray fluorescence spectra (Ka-lines) of different elements and determination of the corresponding energies.
3. Plotting of the measured X-ray energies according to Moseley's law against (Z-1)2 and determination of the Rydberg constant R ∞ from the slope of the resulting lines.
| Artikel-Nr. | Artikelbezeichnung |
|---|---|
| P2524701 | X-ray fluorescence and Moseley’s law with xyt writer |
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