Study of laser-supported detonation waves by time-resolved spectroscopy
- 1 October 1973
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 59 (7), 3692-3700
- https://doi.org/10.1063/1.1680538
Abstract
Temporal developments of sparks generated by a pulse CO2 laser from solid surfaces in air have been studied by time‐resolved spectroscopy in the range from 3800 to 6200 Å. The plasma front appears to be a detonation wave during the early part of the pulse when the laser intensity exceeds about 2 × 107 W/cm2. With decreasing laser intensity, the plasma which contains N+ and O+, expands both forwards and backwards to become a luminous column in a way similar to the combustion wave described by Raizer. Stimulated emission from AlO has been observed in the vapor from an alumina sample.Keywords
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