EBS Amplifier with Cold Cathode.
Abstract
The cold cathode EBS device is fabricated through solution of several problem factors which have plagued fabrication and application of such devices until now. Judicious choice of materials to be employed within the vacuum tube and careful preprocessing of all materials before assembly have significantly minimized the effect of the above mentioned undesirable factors. Considered most important in this regard is identification of getters for use within the vacuum envelope, which getters will not degass in a rarefied vacuum as is common, thereby fouling the environment and especially the cathode emitter. Next in importance is a careful choice of materials which by their nature are least likely to degass in vacuum, yet which meet the other important standards in regard to performance under heat, expansion rates, degree of fragility and costs for instance. A further important step of the fabrication technique to be described in detail below is the chemical cleaning and prefiring of most of the materials before assembly to remove volatile surface matter. These techniques further take into account selection of proper materials in regard to matters of heat expansion, propensity to degass or poison, and best emission qualities, among other matters considered.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 27, 1983
- Accession Number
- ADD010055
Entities
People
- Bernard Smith
- Stanley Dubuske
Organizations
- United States Army