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Development program on a cold cathode electron gun (Document No: 19810010868)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Spindt, C. A. |
| Copyright Year | 1979 |
| Description | A prototype electron gun with a field emitter cathode capable of producing 95 mA in a 1/4 mm diameter beam at 12 kV was produced. Achievement of this goal required supporting studies in cathode fabrication, cathode performance, gun design, cathode mounting and gun fabrication. A series of empirical investigations advanced fabrication technology: More stable emitters were produced and multiple cone failure caused by chain reaction discharges were reduced. The cathode is capable of producing well over 95 mA, but a substantial collector development effort was required to demonstrate emission levels in the 100 mA region. Space charge problems made these levels difficult to achieve. Recommendations are made for future process and materials investigation. Electron gun designs were modeled and tested. A pair of two-electrode gun structures were fabricated and tested; one gun was delivered to NASA. Cathodes were pretested up to 100 mA at SRI and delivered to NASA for test in the gun structure. |
| File Size | 7793495 |
| Page Count | 84 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19810010868 |
| Archival Resource Key | ark:/13960/t5p89360g |
| Language | English |
| Publisher Date | 1979-05-01 |
| Access Restriction | Open |
| Subject Keyword | Electronics And Electrical Engineering Fabrication Performance Tests Tube Cathodes Cathode Ray Tubes Electron Guns Product Development Cold Cathodes Cold Cathode Tubes Field Emission Design Analysis Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
