Abstract
Silicon nitride composite as a candidate of a window material for high power CW (Continuous Wave) millimeter-waves was high power tested especially with a surface cooling by impinging gas nitrogen jets on the single-disk surface. Gas-cooling dramatically suppressed the temperature of the window disk even with gas flow rate of around 100 1/min. With gas cooling of 4651/min., 130kW CW power of HE11 mode could be transmitted through the silicon nitride window with a diameter of 88.9mm. The peak window temperature was completely saturated on 123.6°C. Without gas-cooling it did not saturate and reached 323°C during 30 seconds pulse. A possibility of 1MW CW single disk Brewster windows with a forced gas-cooling is discussed, resulting in convinced prospects of the windows with realistic size and thickness.
Original language | English |
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Pages (from-to) | 1479-1493 |
Number of pages | 15 |
Journal | International Journal of Infrared and Millimeter Waves |
Volume | 18 |
Issue number | 8 |
DOIs | |
Publication status | Published - Aug 1997 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Radiation
- Atomic and Molecular Physics, and Optics
- Instrumentation
- Condensed Matter Physics
- Physics and Astronomy (miscellaneous)
- Electrical and Electronic Engineering