Electron Paramagnetic Resonance

Introduction

Electron Paramagnetic Resonance was invented after Second World War by Zawojski. Nowdays EPR is a major part of radiospectroscopy and elementary investigations, and has many practical applications.

Units and constants

Magnetic Field is discrabed by some constants and units:

• Magnetic induction ${\displaystyle {\bar {B}}}$  in teslas [T]
• Magnetic flux dencity ${\displaystyle {\bar {H}}}$  in [${\displaystyle {\frac {A}{m}}}$ ]
• ${\displaystyle {\bar {B}}}$  and ${\displaystyle {\bar {H}}}$  relationship:
  

${\displaystyle {\bar {B}}=\mu _{0}{\bar {H}}}$ 

• CGS unit for magnetic induction is Gauss [G] which is equivalent of 10^-4 [T]

Furthermore in describing EPR, following units are very important:

• Planck constant ${\displaystyle h=6,63\times 10^{-4}}$  [J.s]
• Boltzmann constant ${\displaystyle k=1,38\times 10^{-23}}$ [J.K^-1]
• Bohr magnetone ${\displaystyle \beta =9,27\times 10^{-24}}$ [J.T^-1]

Basics