https://doi.org/10.1051/epjap:2004016
Interaction of high-power microwave beams with metal-dielectric media
General Physics Institute of Russian Academy of Sciences, 119991, Vavilova Street 38, Moscow, Russia
Corresponding author: Kossyi@fpl.gpi.ru
Received:
3
February
2003
Revised:
3
December
2003
Accepted:
16
January
2004
Published online:
4
March
2004
Results of experimental investigation of powerful microwave beams action on the metal-dielectric compositions are presented. Dielectric surfaces with introduced metallic grains as well as dielectric powder containing small admixtures of a metallic one have been explored as an objects of irradiation. At a relatively small microwave power (
mW) all investigated targets were practically completely transparent for incident electromagnetic wave. At a relatively high power (microwave generators based on the gyratrons and powerful magnetrons) the irreversible changes in the electric and radiophysical properties of metal-dielectric composites exposed to microwave radiation whose intensity is below the threshold intensity for plasma production have been observed (sharp increase of conductivity and microwave absorption coefficient).
PACS: 71.30.+h – Metal-insulator transitions and other electronic transitions / 52.40.Db – Electromagnetic (nonlaser) radiation interactions with plasma
© EDP Sciences, 2004
