DAMAGE AND EROSION AT CERAMIC WINDOWS DUE TO HIGH-POWER MILLIMETER WAVES

Authors
NICKEL HU HALBRITTER J
Citation
Hu. Nickel et J. Halbritter, DAMAGE AND EROSION AT CERAMIC WINDOWS DUE TO HIGH-POWER MILLIMETER WAVES, International journal of infrared and millimeter waves, 15(4), 1994, pp. 651-664
Citations number
22
Categorie Soggetti
Engineering, Eletrical & Electronic","Physics, Applied",Optics
Journal title
International journal of infrared and millimeter waves → ACNP
ISSN journal
01959271
Volume
15
Issue
4
Year of publication
1994
Pages
651 - 664
Database
ISI
SICI code
0195-9271(1994)15:4<651:DAEACW>2.0.ZU;2-5
Abstract
The damage that occurs at alumina windows of high-power millimeter wav e gyrotrons operating in TE0,n mode is investigated. This damage appea rs only on the air side of the window where it yields small spot-like features (diameter < 1 mm) and circular ''melting'' patterns (diameter > 1 cm). The damage observed is thought to be related to rf field enh ancements by resonances of trapped electromagnetic modes and by protru sions and contaminations of the ceramic surface.