Pulsed light sources for ballistic investigations
Abstract
Pulsed light sources for studies of fast flows were developed to generate 40 nanometer pulses in the visible spectrum at frequencies up to one million pulses/s. Gas discharge sources, spark generators, or pulsed lasers are required for optical analyses of flows to produce short light bursts of 0.1 microsec at velocities exceeding 1000 m/s. Gas discharge sources are economical and can operate with variations in emission intensities, but need large luminescence regions; spark devices satisfy requirements of optical and ballistic instrumentation involving short pulse durations, ability to vary with the shape of a light source, and adaptability to vacuum conditions.
- Publication:
-
Physical-Gasdynamic Ballistic Studies
- Pub Date:
- 1980
- Bibcode:
- 1980pgbs.book..193B
- Keywords:
-
- Ballistics;
- Flow Visualization;
- Light Sources;
- Optical Measuring Instruments;
- Pulsed Lasers;
- Spark Chambers;
- Gas Discharges;
- Pulse Duration;
- Rc Circuits;
- Instrumentation and Photography