Electron-Paramagnetic Resonance (EPR)
Supervisor: Dr. Jürgen Vogt
The basics of the EPR are imparted with the help of a clear experimental setup. The
resonance effect is first measured on free radicals. From this first measurement one has to
determine the g-factor of the measured substances as well as the sensitivity of the
spectrometer. Furthermore the angular dependence ofthe EPR-lines of the paramagnetic
test ion Cr 3+sitting on places of axial crystal symmetry has to be measured and theoretically discussed.
- Investigation of a reflex clystron and a microwave bridge arrangement
- Determination of g-factor and line width of the absorption spectra of CuSO4 x 5H2O
- Determination of the g-factor of the radical centres in DPPH and ultramarine
- Registration of the angular dependence of the EPR signal for the probe ion Cr3+ in an axial crystal field and discussion of the results
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