An ESR-CT imaging of the head of a living rat receiving an administration of a nitroxide radical

Surface-coil-type resonators for in vivo temporal ESR measurements in different organs of nitroxide-treated rats

“…A 700 MHz microwave ESR spectrometer constructed at our laboratory (already described in detail [4,5]), consisted of a main electromagnet, a pair of field scan coils, a pair of field gradient coils, power supplies, a personal computer, and a 700 MHz microwave ESR unit. The main electromagnet is air-cored, water-cooled, and two-coil Helmholtz designed.…”

Imaging of Electrically Detected Magnetic Resonance of a Silicon Wafer

“…The magnetic field was scanned by controlling the current in a pair of field scan coils (Helmholtz type coil, Yonezawa Electric Wire, Japan). The sweep time was 1.9 s. Pairs of field gradient coils (Andersontype coil for the y-gradient and anti-Helmholtz-type coil for the z gradient, Yonezawa Electric Wire) were used to provide a linear field gradient at 2 mT/cm in a range from the center to 20 mm along the y and z axes (15). The magnetic field was modulated at 362 Hz by a pair of modulation coils for lock-in detection.…”

Automatic Coupling Control of a Loop–Gap Resonator by a Variable Capacitor Attached Coupling Coil for EPR Measurements at 650 MHz

“…A loop-gap resonator (LGR) (1-3), one of the frequently used EPR resonators for in vivo study (4)(5)(6), is coupled to the external circuits by one of two methods: capacitive or magnetic coupling (7). To obtain EPR spectra with a good signal-to-noise ratio (SNR), it is necessary to control the coupling to minimize reflections from the resonator.…”