Accession Number:

ADA052841

Title:

Ion Cyclotron Waves Generated by an Ionospheric Barium Injection.

Descriptive Note:

Interim rept.,

Corporate Author:

AEROSPACE CORP EL SEGUNDO CALIF SPACE SCIENCES LAB

Personal Author(s):

Report Date:

1978-03-13

Pagination or Media Count:

24.0

Abstract:

A shaped-charge, barium, plasma-injection experiment was performed in June 1976 at the ERDA Kauai Test Facility. The barium was injected perpendicular to the geomagnetic field at an altitude of 450 km. The second stage of the rocket, located approximately 1.2 km from the point of detonation, contained a payload to measure dc and ac electric fields using a dual spherical-probe antenna. A variety of plasma waves were detected for approximately 20 sec following the detonation. The initial impulse generated ion cyclotron waves at the Ba, O2, Al, OH, and O gyrofrequencies. This was followed by a time period during which ion cyclotron waves were observed in passbands between the barium gyrofrequency harmonics up to the oxygen gyrofrequency. At the high frequency end of this range of the spectrum is essentially continuous, i.e., similar to an ion sound wave spectrum. Author

Subject Categories:

  • Atmospheric Physics
  • Plasma Physics and Magnetohydrodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE