STUDY OF METHODS FOR IMPROVING QUALITY OF SYNTHETIC QUARTZ
Abstract
Two runs in 250-ml platinum-lined vessels are in operation. They involve swept Z-growth seeds and 0.83 sodium carbonate solution containing 1 to 10 ppm aluminum and otherwise of exceptional purity. One run has swept Z-growth quartz as feed, the other has Corning 100% Fused Silica. In all, eight growth experiments are running. One run emphasizes growth at low temperature difference (13 C) in the sodium carbonatebicarbonate solution that yielded high Q material as reported under the previous contract. Another emphasizes study of a baffle and feed-holding basket. A preliminary test in a platinum-lined vessel, yielded quartz of high visua quality. A parallel-polarized light apparatus was developed for study of strained areas in quartz plates. Photographs demonstrated the correlation of strained areas with areas of localized radiation darkening. Complete correlation with dislocation patterns is awaiting successful development of X-ray techniques. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 28, 1961
- Accession Number
- AD0262999
Entities
People
- A.e. Carlson
- D.r. Hale