Claims
- 1. In an improved method of screening against millimeter wave transmission, the improvement comprising injecting into the atmosphere a screening cloud of fine particles comprised of carbon compositions selected from the group consisting of graphitized carbon fibers and polyacrylonitrile based precursors including cutting said fibers to one half the wavelength of the desired frequency to be screened, said particles are epoxy sized and desized and of a particular size of about 3 to about 7 microns in diameter, forming said cloud by bursting a compacted generally cohesive solid mass of said particles in the atmosphere by a high explosive charge within said compacted mass of said carbon composition to thereby aerosolize and disperse said particles in the atmosphere.
- 2. The method according to claim 1, wherein the ratio of the weights of said compacted cohesive mass of particles relative to said high explosive charge being within the range of about 20:1 and about 60:1.
- 3. The method according to claim 2, wherein the screening cloud is effective in the millimeter region of the electromagnetic spectrum.
GOVERNMENTAL INTEREST
The invention described herein may be manufactured, used and licensed by or for the Government for governmental purposes without payment to us of any royalties thereon.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
4704967 |
Milstead et al. |
Nov 1987 |
|
4808481 |
Luxon |
Feb 1989 |
|