Accession Number : AD0783313

Title :   Charged Particle Gravity Meter Research.

Descriptive Note : Final scientific rept. 1 Jul 67-26 Dec 70,

Corporate Author : MARTIN MARIETTA AEROSPACE ORLANDO FLA

Personal Author(s) : Inderwiesen,Frank H.

Report Date : AUG 1971

Pagination or Media Count : 103

Abstract : Research was conducted into an absolute gravity meter based on the novel concept of a microscopic, free-bouncing, charged particle. Design and assembly of an experimental gravity meter system including automatic data processing to aid in the performance evaluation was completed. The 10 cm quartz reference length bars were calibrated to an accuracy of plus or minus 0.02 micron by the National Research Council, Canada. Standard deviations for runs of 128 bounce have been 8 to 12 mgal under fixed height and pressure conditions. A 4 hour, 40 minute continuous stability test showed the average of the g-averages stayed within plus or minus 8 mgal throughout. (Modified author abstract)

Descriptors :   *Gravimetry, Charged particles, Data processing, Standard deviation, Analog to digital converters, Photomultiplier tubes, Gravity

Subject Categories : Geodesy

Distribution Statement : APPROVED FOR PUBLIC RELEASE