The process of ignition and extinction control the transition
between burning and non-burning states of a combustible mixture.
Since these processes are highly abrupt events, occurring over very
short time intervals or spatial scales, their characteristics are
resolved using laser imaging and numerical simulation.
Understanding of these phenomena allows improved design and
operation of combustors, the identification of additives for
enhanced combustion, and improvements in the prevention and control
of fire and explosion hazards, for which retarded combustibility is