electron paramagnetic resonance (EPR)

Electron @P04404@ @R05326@ (EPR) and/or electron spin @R05326@ (ESR) is defined as the form of @S05848@ concerned with microwave-induced transitions between magnetic energy levels of electrons having a net spin and orbital @A00353@. The term electron @P04404@ @R05326@ and the symbol EPR are preferred and should be used for primary indexing.
PAC, 1989, 61, 2195. (Recommendation for EPR/ESR nomenclature and conventions for presenting experimental data in publications (Recommendations 1989)) on page 2196 [Terms] [Paper]