Accession Number : AD0616123

Title :   ELECTROMAGNETIC PROPERTIES OF A PLASMACOVERED ANTENNA.

Descriptive Note : Physical sciences research papers,

Corporate Author : AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Personal Author(s) : Jacavanco,Daniel J.

Report Date : MAY 1965

Pagination or Media Count : 18

Abstract : Antenna patterns (E-plane) of an X-band horn mounted in a ground plane and covered by a plasma slab were measured. A pulsed plasma was produced by capacitor discharge in a rectangular pyrex container of 6 in. x 2 in. x 24 in. i.d. Microwave interferometer measurements of the electron density were made at 9 and 35 Gc. Antenna patterns are presented which show a sharp decrease in radiated power at certain angles corresponding to the 'optics critical angle'. Good agreement is obtained for the movement of the optics critical angle with plasma density. (Author)

Descriptors :   (*ANTENNA RADIATION PATTERNS, PLASMA SHEATHS), (*HORN ANTENNAS, ELECTROMAGNETIC PROPERTIES), EXPERIMENTAL DATA, ELECTRON DENSITY, MICROWAVE FREQUENCY, RADIO INTERFEROMETERS

Distribution Statement : APPROVED FOR PUBLIC RELEASE