Electron Spin Resonance and its Applications


Dept. of Physical Science, Kakatiya Institute of Technology & Science, Warangal (A. P), India.


The vast majority of magnetic Resonance spectroscopic  investigations make use of  Nuclear Magnetic Resonance (NMR) which is based on the interaction of  atomic nuclei with applied static and Radio frequency magnetic fields. There exists another important Magnetic Resonance called Electron Spin Resonance (ESR) or Electron Paramagnetic Resonance (EPR)-which can also provide extremely useful information in the study of free radicals, Inorganic compounds, biological and biomedical applications.ESR relies on interactions with electron spins, specifically unpaired electron spin, usually located in free radical molecules. Like NMR, ESR can be used in both spectroscopic and imaging modes.

Keywords :

ESR , Bohr magneton, NMR , g- factor , Planck’s constant;  gyro magnetic Radio, X- band spectrometer , L- band spectrometer,  Q- band spectrometer ,  Relaxation timer,  klystron oscillator,  Phase Sensitive Detector (PSD)




International eJournal of Mathematical Sciences, Technology and Humanities

Volume 3, Issue 3, Pages:  1070 - 1076