Accession Number : ADA332515

Title :   The WIND-HAARP Experiment: Initial Results of High Power Radiowave Interactions with Space Plasmas

Descriptive Note : Interim rept.

Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC PLASMA PHYSICS DIV

Personal Author(s) : Rodriguez, P. ; Kennedy, E. ; Keskinen, M. ; Siefring, C. ; Basu, S.

PDF Url : ADA332515

Report Date : 10 NOV 1997

Pagination or Media Count : 18

Abstract : Results from the first science experiment with the new HF Active Auroral Research Program (HAARP) facility in Alaska are reported. The initial experiments involved transmission of high frequency waves from HAARP to the NASA/WIND satellite. The objective was to investigate the effects of space plasmas on high power (approx. 300 kW) radiowave transmission from the ground to high altitudes in the magnetosphere. The data acquired suggest that structured space plasmas along the propagation path impose a power law spectrum of intensity fluctuations on the transmitted waves, resembling that of scintillation interactions. However, because the transmitted wave frequencies are near ionospheric plasma frequencies, other types of wave-plasma interactions may occur. The measurements can provide an important new diagnostic tool for space plasmas.

Descriptors :   *PLASMAS(PHYSICS), *RADIO WAVES, HIGH POWER, IONOSPHERE, HIGH FREQUENCY, SPACE ENVIRONMENTS, ELECTRON DENSITY, POWER SPECTRA, HIGH ALTITUDE, RADIO TRANSMISSION, COMMUNICATION SATELLITES, MAGNETOSPHERE.

Subject Categories : Plasma Physics and Magnetohydrodynamics
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE