ESR spectrometer having split-ring resonator

Details ESR spectrometer having split-ring resonator ESR spectrometer having split-ring resonator

1986-08-05

1988-01-05

Levy, Stewart J.

Electricity: measuring and testing

Particle precession resonance

Using an electron resonance spectrometer system

333219, 324318, G01V 3324

Patent

active

047178809

ABSTRACT:
The prior art split-ring resonator for use in an electron spin resonance (ESR) spectrometer comprises a circular cylinder made from an electrically conductive material and housed in a metallic tube. The cylinder is provided with a split extending axially of the cylinder. A sample to be investigated is inserted into the cylinder in the axial direction. In accordance with the invention, a shielding member which is wider than said slit and made from an electrically conductive material is disposed so as to shield the slit from the inside of the cylinder, whereby the resonance frequency of the resonator is not significantly affected by the presence or absence of the sample or by the amount of the inserted sample.

REFERENCES:
patent: 2578429 (1951-12-01), Karplus
patent: 4446429 (1984-05-01), Froncisz et al.
patent: 4633180 (1986-12-01), Biehl et al.
Radio Shack, 1974-75, Dictionary of Electronics, 1974, pp. 149 & 291.
Split-Ring Resonator for Use in Magnetic Resonance from 200-2000 MHz, by W. N. Hardy et al., Rev. Sci, Instrum., 52(2), Feb. 1981, pp. 213-216.

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