Accession Number : ADA139191

Title :   Optical Imaging of a Coupling Region between Inter-Streaming Plasmas.

Descriptive Note : Memorandum rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s) : Stamper,J A ; Ripin,B H ; McLean,E A ; Obenschain,S P

PDF Url : ADA139191

Report Date : 24 Feb 1984

Pagination or Media Count : 32

Abstract : Recent studies in the NRL HANE simulation experiment have been directed toward a higher pressure/low altitude regime where HANE events (e.g., Checkmate) and early HANE simulations (P or approx. = .5 Torr) had shown a turbulence or jetting. The main diagnostic was dual-time, dark-field shadowgraphy which had sufficient temporal ()300 psec) and spatial (10 micron) resolution to resolve details of the developing structure. A well-defined, initially nearly-spherical front or coupling region is seen which slows down, indicating mass pick-up. At higher ambient pressure, lower laser energy and later time, the front shows a breakup. When conditions are just marginal for break-up, the front tends to form a single protuberance or aneurism which grows in time. (Author)

Descriptors :   *Optical images, *Coupling(Interaction), *Plasmas(Physics), Laser applications, Plasma diagnostics, Probes, Low altitude, High pressure, Experimental data, Debris

Subject Categories : Optics
      Plasma Physics and Magnetohydrodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE