Accession Number : AD0603900

Title :   MEASUREMENT OF NARROW MAGNETIC RESONANCE LINEWIDTHS.

Corporate Author : HARRY DIAMOND LABS WASHINGTON D C

Personal Author(s) : Nemarich,Joseph

Report Date : 10 AUG 1964

Pagination or Media Count : 29

Abstract : A discussion is given of the origin of various errors that may occur in the measurement by cavity perturbation techniques of narrow magnetic resonance linewidths. It is shown that the absorption by a spherical magnetic sample in a microwave cavity varies as sin (2) theta, where theta is the angle between the static and microwave magnetic fields. A method of choosing the optimum cavity parameters for minimizing measurement errors is presented, and a proof is given of a tuning technique that has been used to compensate for dispersion of the cavity resonance during a measurement. A detailed description is presented of a magnetic resonance spectrometer that has been used for the accurate measurement of magnetic resonance absorptions with widely varying intensities and very narrow linewidths. (Author)

Descriptors :   (*MICROWAVE SPECTROSCOPY, ERRORS), (*MAGNETIC RESONANCE, SPECTRUM ANALYZERS), CAVITY RESONATORS, LINE SPECTRA, MAGNETIC FIELDS, FERRITES, GARNET, IRON COMPOUNDS, YTTRIUM COMPOUNDS, MEASUREMENT

Distribution Statement : APPROVED FOR PUBLIC RELEASE