Accession Number:

AD0658868

Title:

RF-INDUCED PLASMA SHIELD PROPAGATION IN RARE GASES,

Descriptive Note:

Corporate Author:

GENERAL ELECTRIC CO PHILADELPHIA PA MISSILE AND SPACE DIV

Personal Author(s):

Report Date:

1967-08-01

Pagination or Media Count:

87.0

Abstract:

It has been observed that microwave irradiation of localized weak ionization in heavy rare gases can cause an ionization wave to form and propagate towards the rf source. This ionization wave is preceded by an electron precursor, with the electron density at the ionization wave front increasing very rapidly to a maximum followed by a relatively slow plasma decay. At rf power levels well below normal breakdown, the ionization wave will form and then propagate at velocities from about 2,000 cmsecond over 1,000,000 cmsecond. Discontinuous changes of ionization wave velocities with changes in rf power and gas pressure indicate the existence of three different velocity-controlling mechanisms in the gas pressure and rf power ranges investigated. These mechanisms for ionization wave formation and propagation have been investigated in xenon, krypton, and argon gases, and are discussed. Author

Subject Categories:

  • Plasma Physics and Magnetohydrodynamics
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE