Accession Number:

ADA080309

Title:

Characteristics of Plasma-Beam Wall Interactions.

Descriptive Note:

Final rept. Apr 78-Jun 79,

Corporate Author:

CASE WESTERN RESERVE UNIV CLEVELAND OH PLASMA RESEARCH LAB

Personal Author(s):

Report Date:

1979-06-30

Pagination or Media Count:

77.0

Abstract:

Highly energetic approx. 42 eV and dense approx. 4 times 10 to the 17th powercu. cm. plasma beams with directed velocities approx. 20 cmmicrometers obtained by an improved version of a Cheng type coaxial gun have been directed towards a perforated metallic plate to study the beam-hole interaction. Various diagnostic techniques such as optical interferometry, high speed photography, optical spectroscopy, voltage and current measurements have been performed to characterize the incident plasma beam and determine its different parameters in various conditions with and without the perforated plate. A single fluid model using the method of characteristics has been chosen to study the features of the escaping flow. The pressure of the perforated plate reduced the velocities as well as the temperature significantly thus modifying the properties and structure of the diverging jet. Observers provided evidence that a large amount of material has been ablated from the hole region and transported with the escaping jet. Author

Subject Categories:

  • Plasma Physics and Magnetohydrodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE