Accession Number:

ADA010817

Title:

A Direct Mechanism for the Generation of Terrestrial Kilometric Radiation.

Descriptive Note:

Interim rept.,

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s):

• Palmadesso,P.
• Coffey,T. P.
• Ossakow,S. L.
• Papadopoulos,K.

Report Date:

1975-04-01

Pagination or Media Count:

33.0

Abstract:

A beam driven electromagnetic instability which operates in the topside ionosphere in the presence of ion wave turbulence is suggested as a possible explanation of terrestrial kilometric radiation. Theoretical estimates of the central frequency and bandwidth of radiation produced in this way are consistent with observations. In its simplest form the instability mechanism leads to a spectrum of kilometric radiation which propagates primarily in the left-ordinary mode as it leaves the source region.

Descriptors:

• *ELECTROMAGNETIC RADIATION
• *AURORAE
• IONOSPHERE
• EMISSION SPECTRA
• INSTABILITY
• ION DENSITY

Subject Categories:

• Atmospheric Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE