| Autor: |
Myrabo, L. N., Lyons, P. W., Jones, R. A., Liu, S., Manka, C. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 11/10/2011, Vol. 1402 Issue 1, p207-223, 17p |
| Abstrakt: |
This basic research study examines the physics of airbreathing laser propulsion at the extreme flux range of 1-2×1011 W/cm2-within the air breakdown threshold for l μm radiation-using the terawatt Pharos III neodymium-glass pulsed laser. Six different experimental setups were employed using a 34 mm line focus with 66 μm focal waist, positioned near the flat impulse surface. The 2nd Campaign investigated impulse generation with the laser beam focused at grazing incidence across near horizontal target surfaces, with pulse energies ranging from 55 to 186 J, and pulse-widths of 2 to 30 ns FWHM. Laser generated impulse was measured with a horizontal Plexiglas® ballistic pendulum equipped with either a steel target insert or 0.5 Tesla permanent magnet (NEIT-40), to quantify changes in the momentum coupling coefficient (CM). Part 2 of this 2-part paper covers Campaign [sharp/mesh/hash_synonym]2 results including CM performance data, and long exposure color photos of LP plasma phenomena. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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