HIGH-SPEED SHOCK WAVES IN A MAGNETIC ANNULAR SHOCK TUBE
Experiments were carried out with two magnetic field configurations ahead of the shock front, the first with a magnetic field ahead of the shock front in the direction of motion of the shock. In the second configuration the magnetic field ahead of the shock had its principal component in the plane of the shock front and a small coniponent in the direction of the shock motion. The continuum radiation emitted by the shock-heated plasma was measured with photomultipliers. Use of probes to measure the change in the local magnetic field in the shock front was investigated. With the second configuration, shock velocities in excess of 4 x 10/sup 7/ cm/sec were measured in hydrogen. For these high-speed shock waves. shock thicknesses, obtained from measured rise times of the emitted visible radiation, are thinner than the mean free path in the shock-heated plasma, an observation which agrees with a theoretical prediction. (auth)
- Research Organization:
- Avco-Everett Research Lab., Everett, Mass.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-14-004844
- OSTI ID:
- 4219794
- Journal Information:
- Physics of Fluids (U.S.), Journal Name: Physics of Fluids (U.S.) Vol. Vol: 2; ISSN PFLDA
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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