Qualitative X-ray fluorescence spectroscopy of metals - Moseley's law

Продукт No: P2544501


Various metal samples are subjected to polychromatic X-rays. The energy of the resulting fluorescence radiation is analysed with the aid of a semiconductor detector and a multi channel analyser. The energy of the corresponding characteristic X-ray lines is determined and the resulting Moseley diagram is used to determine the Rydberg frequency and the screening constants.


  1. Calibrate the semiconductor energy detector with the aid of the characteristic radiation of the  tungsten X-ray tube.
  2. Record the spectra of the fluorescence radiation that are generated by the metal samples.
  3. Determine the energy values of the corresponding characteristic K α- and K β-lines.
  4. Determine the Rydberg frequency and screening constants with the aid of the resulting Moseley diagrams.

What you can learn about

  • Bremsstrahlung
  • characteristic X-radiation
  • Absorption of X-rays
  • Bohr's atom model
  • Energy levels
  • Moseley's law
  • Rydberg frequency
  • Screening constant
  • Semiconductor energy detectors
  • Multichannel analysers

Перечень материалов (вы́писка) Продукт Количество
XR 4.0 expert unit, X-ray unit, 35 kV 09057-99 1
XR 4.0 X-ray energy detector (XRED) 09058-30 1
XR 4.0 X-ray plug-in unit W tube 09057-81 1
XR 4.0 X-ray goniometer 09057-10 1
PHYWE Multichannel Analyser (MCA) 13727-99 1
XR 4.0 X-ray specimen set of 6 metals for X-ray fluorescence 09058-31 1
XR 4.0 XRED cable, 2 m 09058-35 1
measure Software multi channel analyser 14452-61 1
XR 4.0 X-ray Universal crystal holder for X-ray unit 09058-02 1
XR 4.0 X-ray Diaphragm tube d = 1 mm 09057-01 1
XR 4.0 X-ray Diaphragm tube d = 2 mm 09057-02 1
Screened cable, BNC, l = 750 mm 07542-11 1

Литература по данной статье

Название Продукт Язык
Handbuch Lehrerversuche mit Röntgenstrahlung für die XR 4.0 expert unit, TESS expert Physik 01200-01 DEU
TESS expert Physics Handbook X-ray Experiments for XR 4.0 expert unit 01200-02 ENG
XRM 4.0 X-ray Materialanalyse Erweiterungsset 09160-88

Назад к перечню

Продукт No: P2544501

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