electron spin resonance
Học thuậtThân thiện
Definition
- Noun:
- A spectroscopic technique: Electron spin resonance (ESR) is a method in microwave spectroscopy where a paramagnetic substance exhibits resonant absorption of electromagnetic radiation. It is used to study materials with unpaired electrons by observing their interaction with a magnetic field.
Usage
- Noun:
- Electron spin resonance is a crucial tool for studying free radicals in chemical reactions.
- The researcher used electron spin resonance to analyze the paramagnetic defects in the crystal lattice.
Advanced Usage
"Continuous-wave electron spin resonance (CW-ESR)": A standard ESR method where the microwave frequency is held constant while the magnetic field is swept to observe resonance.
- Continuous-wave electron spin resonance provided a clear spectrum of the organic radical.
"Pulsed electron spin resonance": A more advanced technique using short microwave pulses to investigate electron spin dynamics.
- Pulsed electron spin resonance can measure relaxation times of unpaired electrons.
Variants and Related Words
ESR: A common abbreviation for electron spin resonance.
- The ESR spectrum confirmed the presence of the transition metal ion.
Electron paramagnetic resonance (EPR): A fully synonymous term for electron spin resonance.
- Electron paramagnetic resonance is often used interchangeably with ESR in the literature.
Synonyms
- Electron paramagnetic resonance (EPR): The alternative name for the same spectroscopic technique.
- Spin resonance spectroscopy: A broader term that can encompass ESR.
Related Phrases
ESR spectroscopy: The field or practice of using electron spin resonance.
- ESR spectroscopy has applications in both physics and biology.
ESR signal: The specific absorption peak or pattern detected in an ESR experiment.
- The intensity of the ESR signal is proportional to the number of unpaired spins.
Noun
- microwave spectroscopy in which there is resonant absorption of radiation by a paramagnet