|Electron paramagnetic resonance (EPR) is a spectroscopic method allowing investigation of substances containing paramagnetic centres, such as:
transition metal ions and rare earth ions with incomplete shells: 3d, 4d, 4f, 5d, 5f,
radicals of natural origin,
radicals generated by irradiation with X, gamma or UV radiation,
certain type defects in the crystal lattice in solids.
EPR is characterised by:
short time of single measurement,
simple preparation of samples to be measured.
The method has been succesfully applied in such fields as physics, chemistry, biology, medicine and geology.
At the Division of Medical Physics the method has been used for:
investigation of structure and electron dynamics in:
biologically active compounds such as
- steroid hormones
- antibiotics and other drugs
dating of geological materials (fossil teeth and bones of cave bear and mammoth) and archaeological artefacts (ceramics).