electron paramagnetic resonance
E590882
Electron paramagnetic resonance is a spectroscopic technique used to study materials with unpaired electrons by measuring their magnetic interactions in an applied magnetic field.
Observed surface forms (2)
| Surface form | Occurrences |
|---|---|
| EPR spectroscopy | 1 |
| ESR spectroscopy | 1 |
Statements (55)
| Predicate | Object |
|---|---|
| instanceOf |
magnetic resonance technique
ⓘ
spectroscopic technique ⓘ |
| analyzes | spin Hamiltonian parameters ⓘ |
| appliesTo |
gases
ⓘ
liquids ⓘ solids ⓘ |
| basedOn |
Zeeman effect
NERFINISHED
ⓘ
electron spin transitions ⓘ |
| characterizes |
defects in solids
ⓘ
free radicals ⓘ paramagnetic species ⓘ transition metal ions ⓘ |
| developedIn | 20th century ⓘ |
| discoveredBy | Yevgeny Zavoisky NERFINISHED ⓘ |
| discoveryYear | 1944 ⓘ |
| doesNotDetect | diamagnetic species ⓘ |
| hasAlias |
EPR
ⓘ
ESR NERFINISHED ⓘ electron spin resonance ⓘ |
| hasKeyParameter |
g-factor
ⓘ
hyperfine coupling constant ⓘ line width ⓘ relaxation time ⓘ |
| hasVariant |
DEER
ⓘ
ENDOR ⓘ ESEEM ⓘ continuous-wave EPR ⓘ double electron–electron resonance ⓘ electron spin echo envelope modulation ⓘ electron–nuclear double resonance NERFINISHED ⓘ high-frequency EPR ⓘ pulsed EPR ⓘ |
| measures |
magnetic interactions of unpaired electrons
ⓘ
resonant absorption of microwaves ⓘ |
| operatesAt | microwave frequencies ⓘ |
| providesInformationOn |
dynamics of paramagnetic species
ⓘ
electronic structure ⓘ local environment of paramagnetic centers ⓘ |
| relatedTo |
magnetic resonance imaging
NERFINISHED
ⓘ
nuclear magnetic resonance ⓘ |
| requires |
cryogenic temperatures for some experiments
ⓘ
non-zero electron spin ⓘ |
| studies | unpaired electrons ⓘ |
| usedFor |
dating of archaeological samples
ⓘ
dosimetry ⓘ identification of paramagnetic centers ⓘ structural analysis of metal complexes ⓘ study of reaction mechanisms involving radicals ⓘ |
| usedIn |
biology
ⓘ
chemistry ⓘ materials science ⓘ medicine ⓘ physics ⓘ |
| uses |
microwave radiation
ⓘ
static magnetic field ⓘ |
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
EPR spectroscopy
this entity surface form:
ESR spectroscopy