{"tema_id":"618","string":"EPR spectroscopy           #01760","created":"2022-12-19 09:13:31","code":null,"notes":[{"@type":"Cataloger's note","@lang":"en-EN","@value":"reference: R132:2001 3.3 "},{"@type":"Cataloger's note","@lang":"en-EN","@value":"ID: 01760 "},{"@type":"Definition note","@lang":"en-EN","@value":"measurement of resonant absorption of electromagnetic energy, resulting from the transition of unpaired electrons between different energy levels, upon application of usually microwave frequency energy to a paramagnetic substance in the presence of a magnetic field "}]}