Electron spin resonance spectrometer

Details Electron spin resonance spectrometer Electron spin resonance spectrometer

1987-11-20

1988-11-01

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using an electron resonance spectrometer system

324322, G01R 3320

Patent

active

047822970

ABSTRACT:
An electron spin resonance spectrometer comprises a resonator arranged in a magnetic field of constant strength and high homogeneity and containing a sample. The resonator can be supplied, via a microwave bridge, with high-power microwave energy in the form of an intermittent signal. Measuring signals emitted by the resonator can be supplied to detector arrangements and signal evaluation arrangements. In order to be able to cut a pulse-shaped output signal of the microwave power amplifier off sharply at its trailing edge, the attenuator is designed as a switching stage comprising a circulator whose input is connected to the output of the microwave power amplifier. A subsequent circulator connection is wired up to a series connection comprising a microwave switching diode that can be switched via a control input and a waveguide termination, and another subsequent circulator connection is connected to the microwave bridge (FIG. 10).

REFERENCES:
patent: 3879653 (1975-04-01), Hyde et al.
patent: 3931569 (1976-01-01), Hyde
patent: 4259638 (1981-03-01), Krueger
patent: 4593248 (1986-06-01), Hyde
patent: 4623835 (1986-11-01), Mehdizadeh
patent: 4712560 (1987-12-01), Schaefer
"An Active Microwave Delay Line for Reducing the Dead in Electronic Spin Echo Spectrometry" by Narayana, published by the Department of Chemistry of the University of Houston, Tex., as early as in 1982.

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