Ignition of a combustible gas mixture by a laser spark excited in the reactor volume

Journal Article · Sun Mar 15 00:00:00 EDT 2009 · Plasma Physics Reports

DOI:https://doi.org/10.1134/S1063780X09030088· OSTI ID:21405964

Kazantsev, S Yu; Kononov, I G; Kossyi, I A; Tarasova, N M; Firsov, K N ^[1]

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1. Russian Academy of Sciences, Prokhorov Institute of General Physics (Russian Federation)

Ignition of a stoichiometric CH{sub 4}: O{sub 2} mixture by a laser spark excited in the reactor volume is studied experimentally. It is found that the spark initiates a feebly radiating incomplete-combustion wave, which is much faster than the combustion wave, but is substantially slower than the detonation wave. With a time delay of 500-700 {mu}s, a bright optical flash occupying the entire chamber volume is observed, which indicates fast (involving branching chain reactions) ignition of the gas mixture. A conclusion is drawn regarding the common nature of the process of ignition of a combustible gas mixture by a laser spark excited in the reactor volume and the previously investigated initiation of combustion by laser sparks excited at solid targets, high-power microwave discharges, and high-current gliding discharges.

• OSTI ID: 21405964
• Journal Information: Plasma Physics Reports, Vol. 35, Issue 3; Other Information: DOI: 10.1134/S1063780X09030088; Copyright (c) 2009 Pleiades Publishing, Ltd.; ISSN 1063-780X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
COMBUSTION WAVES
DETONATION WAVES
HIGH-FREQUENCY DISCHARGES
IGNITION
LASERS
METHANE
MIXTURES
OXYGEN
STOICHIOMETRY
ALKANES
DISPERSIONS
ELECTRIC DISCHARGES
ELEMENTS
HYDROCARBONS
NONMETALS
ORGANIC COMPOUNDS
SHOCK WAVES