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Long range detection of explosives or contraband using nuclear quadrupole resonance
Long range detection of explosives or contraband using nuclear quadrupole resonance
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机译:利用核四极共振对炸药或违禁品进行远距离探测
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摘要
Nuclear quadrupole resonance substance detection at a distance is provided by crossed or overlapping high frequency beams in which the frequency of one of the beams is offset with respect to the frequency of the other beam by an amount equal to the resonant frequency of the non-linear material to be detected. The presence of energy at the offset frequency within the overlapping beams pumps any non-linear material within the overlapping beams to cause stimulated emission which is detected, in one embodiment, utilizing a network analyzer, along with correlation of the detected stimulated emission signature with a library of signatures for predetermined substances.
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