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Nuclear Quadrupole Resonance or even NQR occurs as system related to nuclear magnetic resonance (NMR) which is used to detect atoms whose nuclei have a nuclear quadrupole moment, such as ^FourteenN, ³⁵Cl and ⁶³Cu. Since unlike NMR, NQR is waste an environment forgoing the static (or even DC) magnetic field, these are for instance known as "zero-field NMR". Numbers of NQR transition freqencies depend strongly upon temperature.

There are many search groups as much as the world presently working in ways to utilise NQR to detect explosives. Units designed to detect landmines & explosives concealed around baggage use at times been tested. The detection formulas consists of the radio frequency (RF) power source, the coil to develop the charismatic excitation field & a detector circuit which monitors for a RF NQR response coming from a explosive component of the mine.

An additional practical apply for NQR is with measurements of a water/gas/oil coming away from an Oil well in realtime. This particular system allows local or even remote monitoring of the extraction run, calculation of the easily's left over capacity & a water/detergents ratio a input pump must send to expeditiously extract oil.

Related Links
[http://www.spinlock.com.ar Spinlock Magnetic Resonance Solutions]

Quantum Magnetics
Advanced quadrupole resonance systems for explosives detection.

Landmine Who's Who from Lawrence Livermore National Lab
A table of organizations working towards solutions to the global landmine problem. Including some research organizations working on landmine detection with NQR.

Land Mine Detection from DOD
News release about NQR and land mine detection. From the DoD.