Optically recording velocity interferometer system (ORVIS) for subnanosecond particle-velocity measurements in shock waves

Conference · Fri Jan 01 04:00:00 EST 1982

OSTI ID:5183418

Bloomquist, D D; Sheffield, S A

An optically recording velocity interferometer system (ORVIS) has been developed to measure particle velocity with subnanosecond resolution for shock waves in condensed matter. The fringe pattern of a wide-angle Michelson interferometer was focused as a set of dots on the slit of a high speed streak camera, resulting in a continuous record of the fringe position as a function of time. This technique was employed to measure the particle velocity of a witness foil in a series of experiments to study the nature of detonation-driven shock waves. The present experiments demonstrated a time resolution of about 300 ps, and we believe that 20 ps resolution may be achievable with this technique. The improvement in time resolution of up to two orders of magnitude over current diagnostic techniques will be an aid in the study of several aspects of shock wave phenomena such as shock front thickness, detonation wave theory, fast relaxation at an impact plane, and fine structure in shock fronts associated with chemical reaction.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5183418
• Report Number(s): SAND-82-1368C; CONF-820824-3; ON: DE82017621
• Country of Publication: United States
• Language: English

Related Subjects

440300* -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
DETONATIONS
INTERFEROMETERS
MEASURING INSTRUMENTS
RESOLUTION
SHOCK WAVES
SOLIDS
TIME RESOLUTION
TIMING PROPERTIES
VELOCIMETERS
VELOCITY