Appendix 9A: Backscatter from a Plasma Plume due to Excitation of Surface Waves*
9A.1Introduction
Dr. Keith Groves, my focal point at PL/GP for the Air Force Office of Scientific Research Summer Faculty Research Program (1994), suggested me to investigate the following problem: Experiments conducted by Air Force Laboratories showed that considerable unexpected electromagnetic backscatter from a plasma plume is occurring in a certain intermediate frequency band.
Figures 9A.1 and 9A.2 show the electron density and collision frequency numbers in the plasma plume. The plume is a cylindrical inhomogeneous lossy plasma column. The maximum electron density N0m on the axis (r = 0) is 3E13 (#/cm3) corresponding to angular plasma ...
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