Quadrupole Resonance

detects and identifies specific molecules, such as nitrogen in explosives. The technology is not unlike the magnetic resonance imaging (MRI) used in medical analysis, but it uses radio waves instead of magnetics. Because NQR emits no ionizing radiation or strong magnetic fields, it is safe to transport and useful for luggage and mail screening.

Directed at any given material, the equipment aims low-frequency radio wave pulses, tuned to distinct target molecules. Provided target materials are present, these pulses generate a sort of "nuclear moment." This changes the energy state within the target molecules, disturbing their nuclei. As the nuclei settle and the target molecules revert to normal, they respond with a detectable radio frequency of their own. Within the NQR, a sensor coil receives the radio frequency signal. Then the NQR computer rapidly analyzes it, provoking a pass or fail response. Because each signal emitted is unique to the molecular structure of a given compound, the difference between hazardous and harmless compounds is easily distinguishable. A green light means the material is non-explosive. A red light means an explosive is present.

This section of our website is still under development. Please contact us if you have specific questions about QR products.

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