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.

Report Date:

1984-02-24

Pagination or Media Count:

32.0

Abstract:

Recent studies in the NRL HANE simulation experiment have been directed toward a higher pressurelow 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