The fast detection of explosives from the vapor phase would be one way
to enhance the protection of society against terrorist attacks. Up to
now the problem of detection of explosives, especially the location of
explosives whether at large areas e. g. station halls, theaters or
hidden in cars, aircraft cargo, baggage or explosives hidden in crowds
e. g. suicide bombers or bombs in bags has not been solved. Smelling of
explosives like dogs do seems to be a valuable tool for a security
chain. In general different strategies can be adopt to the basic problem
of explosive detection: - bulk detection - vapor detection Normally
meetings cover both aspects and applications of the detection. Even
though both methods might fulfill special aspects of a general security
chain the underlying scientific questions differ strongly. Because of
that the discussions of the scientists and practitioners from the
different main directions are sometimes only less specific. Therefore
the NATO Advisory Panel in Security-Related Civil Science and Technology
proposed a small series of NATO ARW's which focuses on the different
scientific aspects of explosives detection methods. This book is based
on material presented at the first NATO ARW of this series in Moscow
which covered the topic: Vapor and trace detection of explosives. The
second ARW was held in St. Petersburg and treated the topic Bulk
detection methods. The third workshop was held in Warwick and focused on
electronic noses which cover a somewhat different aspect of vapor
detection.