Patent ID: 9696397
Date: 2017-07-04
CPC Classifications: G01R

Claim:
1. An apparatus for fast detection and recognition of one or more predetermined taggant substances marking an object and being of a type having predefined zero external field magnetic resonance signatures, wherein the apparatus is configured as a hand-held device comprising: a signal generator mounted to said hand-held device and configured and operable for generating a sequence of specific excitation pulses of electromagnetic radiation of multiple frequencies within a predefined frequency band; a probehead mounted to said hand-held device and comprising a transmitter configured and operable to receive the sequence of specific excitation pulses of electromagnetic radiation from said signal generator, and to irradiate the object comprising one or more of the predetermine taggant substances with the pulsed electromagnetic radiation, and a receiver configured and operable for acquiring nuclear spin echo response signals from the irradiated object and generating data indicative thereof; a control system mounted to said hand-held device and comprising: