Electron paramagnetic resonance (EPR) ni ubwoko bwa tekinoroji ya magnetiki resonance yaturutse mugihe cya magnetiki ya electron zidakorewe. Irashobora gukoreshwa kugirango tumenye neza kandi mubwinshi gutahura electron zidakorewe zirimo atome cyangwa molekile yibintu, hanyuma ukabishakisha. Imiterere yimiterere yibidukikije. Kuri radicals yubuntu, umwanya wa magnetiki ya orbital nta nkurikizi igira, kandi igice kinini cyumwanya wa magneti (hejuru ya 99%) kigira uruhare mukuzunguruka kwa electron, bityo resonance ya electron paramagnetic nayo yitwa "electron spin resonance" (ESR).

Electron paramagnetic resonance yavumbuwe bwa mbere nuwahoze ari umuhanga mu bya fiziki w’Abasoviyeti E · K · Zavois mu 1944 avuye muri MnCl2, CuCl2 n’indi myunyu ya paramagnetique. Abahanga mu bya fiziki babanje gukoresha ubwo buryo bwo kwiga imiterere ya elegitoronike, imiterere ya kirisiti, umwanya wa dipole, hamwe na molekile ya atome igoye. Hashingiwe ku bisubizo by'ibipimo bya elegitoroniki ya paramagnetic resonance, abahanga mu bya shimi basobanuye isano iri hagati y’imiti nogukwirakwiza ubucucike bwa elegitoronike mu binyabuzima bigoye, ndetse n’ibibazo byinshi bijyanye nuburyo bwo kubyitwaramo. Umunyamerika B. Rusange n'abandi. Yinjije ikoranabuhanga rya electron paramagnetic resonance mubijyanye na biyolojiya bwa mbere mu 1954.Babonye ko hariho radicals yubuntu mu bikoresho bimwe na bimwe by’ibimera n’inyamaswa. Kuva mu myaka ya za 1960, kubera iterambere ryibikoresho bikomeje ndetse no guhanga udushya mu ikoranabuhanga, ikoranabuhanga rya electron paramagnetic resonance ryakoreshejwe muri fiziki, semiconductor, chimie organic, chimie complexe, chimie chimique, chimique chimique, chimie marine, catalizator, biologiya, na ibinyabuzima. Yakoreshejwe henshi mubice byinshi nka chimie, ubuvuzi, siyanse yibidukikije, hamwe nubushakashatsi bwa geologiya.