Detecting Explosives
Detecting Explosives
Today's challenge is not safe handling of explosives but early detection when used by terrorists. Here are 4 methods:
1. Canines: ATF's explosives-detecting canine training program was established in 1992. Although not high tech, canines can detect minute quantities for a variety of explosives.
2. Chemical Sensor: Portable system the size of soccer ball is being developed by Sandia Laboratories that can detect/identify smallest traces of explosives. Known as chemical sensor system, molecules are collected on a fiber and "ion mobility spectrometer" identifies type of explosive.
3. Neutron Beam: Technology called Prompt Gamma Neutron Activation Analysis (PGNAA) directs beam of neutrons. When neutrons contact contaminant, they instantly produce high energy gamma rays. Explosives are identified from energy of gamma rays.
4. Lasers: Carbon dioxide laser scans/analyzes baggage surfaces. The interaction of laser radiation with traces of explosive causes micro bursts. Explosives are identified from light generated by bursts.
Today's challenge is not safe handling of explosives but early detection when used by terrorists. Here are 4 methods:
1. Canines: ATF's explosives-detecting canine training program was established in 1992. Although not high tech, canines can detect minute quantities for a variety of explosives.
2. Chemical Sensor: Portable system the size of soccer ball is being developed by Sandia Laboratories that can detect/identify smallest traces of explosives. Known as chemical sensor system, molecules are collected on a fiber and "ion mobility spectrometer" identifies type of explosive.
3. Neutron Beam: Technology called Prompt Gamma Neutron Activation Analysis (PGNAA) directs beam of neutrons. When neutrons contact contaminant, they instantly produce high energy gamma rays. Explosives are identified from energy of gamma rays.
4. Lasers: Carbon dioxide laser scans/analyzes baggage surfaces. The interaction of laser radiation with traces of explosive causes micro bursts. Explosives are identified from light generated by bursts.
posted by RDS @ 11:08 AM
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