Accession Number : AD0487939

Title :   THE MEASUREMENT OF TRANSIENT IONIZATION LEVELS USING OPEN MICROWAVE RESONATORS.

Descriptive Note : Technical rept.,

Corporate Author : GM DEFENSE RESEARCH LABS SANTA BARBARA CALIF AEROSPACE OPERATIONS DEPT

Personal Author(s) : Hayami,Richard A. ; Kelley,Kevin J.

Report Date : JUL 1966

Pagination or Media Count : 32

Abstract : A method is described for measuring changing ionization levels by observing the phase shift of a microwave signal which has passed through an open resonator while the resonator is being perturbed by the ionization. The measurement range is 10 to the 9th -10 to the 11th e/cm cubed with a time resolution of 1 micro sec and a spatial resolution of 2.5 cm. Methods of measuring the phase shift andconverting the phase information to useful results are detailed. Sources of error are also considered. (Author)

Descriptors :   (*WAKE DETECTORS, *IONIZATION), (*RESONATORS, *ELECTRON DENSITY), PHASE SHIFT CIRCUITS, REENTRY VEHICLES, PLASMA SHEATHS, SIMULATION, ULTRAHIGH FREQUENCY

Subject Categories : Plasma Physics and Magnetohydrodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE