Accession Number : ADP001504

Title :   Growth and Characterisation of High Purity Quartz,

Corporate Author : GENERAL ELECTRIC CO LTD WEMBLEY (ENGLAND)

Personal Author(s) : Croxall,D. F. ; Christie,I. R. A. ; Holt,J. M. ; Isherwood,B. J. ; Todd,A. G.

Report Date : 1982

Pagination or Media Count : 4

Abstract : Quartz crystals have grown which have a purity and crystalline perfection significantly in advance of any quartz that is produced commercially today. The crystals produced were approximately 50 mms x 50 mms in area and were 30 mms thick in the growth direction. The total metal ion concentration was less than 1 ppm, with an aluminium content of less than 0.1 ppm. The crystalline perfection is demonstrated by a dislocation density of < 10 lines per square centimeters. (Author)

Descriptors :   *Frequency, *Control, *Symposia, *Quartz, *Crystals, Purity, High rate, Crystal defects, Crystal growth, Ions, Metals, Dislocations, High density

Distribution Statement : APPROVED FOR PUBLIC RELEASE