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Abstract
Experiments were recently
carried out with a 75-mm (3”)
diameter cylindrical combustion bomb in order to study the interaction of
microwaves with hydrocarbon (HC)-air flame plasmas, The combustion bomb was
excited in the  microwave mode and the
interaction between the microwave electric field and the initially hemispherically propagating flame front plasma resulting
from a centrally located igniting spark was determined. Both the theoretical
evaluation and experimental determination of the cavity Q electrically loaded
with the flame plasma are presented and exhibit remarkably good agreement for
the generally accepted values of HC-air flame front plasma parameters.
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