Diazo Printing Light Source.
Abstract
The report summarizes the results of a program concerned with the development of improved light sources with high service temperature capability. Optical grade ceramic arc-tube materials, metals, and sealing techniques were selected and evaluated - and twenty-two lamps were fabricated and tested for this application. Synthetic sapphire was found to be the best arc-tube material. The test results show that minimum lamp operating temperatures will vaporize adequate quantities of gallium and indium halides but not sufficient quantities of chromium halides to affect the spectra of a mercury arc. A gain of two in spectral efficacy was demonstrated by increasing power input densities. It is concluded that further improvements can be made by using narrow arcs dosed with optimum quantities of gallium and/or indium halides. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1971
- Accession Number
- AD0881906
Entities
People
- Robert A. Bambenek
- Walter J. Jasionowski