Methods for the detection and / or analysis of compounds having simultaneously nuclear quadrupolar resonance and nuclear magnetic resonance or dual nuclear quadrupolar resonance, a sensing element for the detection and / or analysis of compounds having simultaneous nuclear quadrupolar resonance and nuclear magnetic resonance and detection of compounds having a group of spin nuclei a and a group of spin nuclei b and disposition for detection of compounds having dual quadrupolar nuclear resonance or quadrupolar resonance and nuclear magnetic resonance

摘要

"METHODS FOR THE DETECTION AND / OR ANALYSIS OF COMPOUNDS WHICH PRESENT, NUCLEAR QUADRUPOLAR RESONANCE AND NUCLEAR MAGNETIC RESONANCE, OR THAT THE NUCLEAR QUADRUPOLAR AND NON-SIMULAR RESONANCE, AND NUCLEAR MAGNETIC RESONANCE AND DETECTION OF COMPOUNDS THAT HAVE A GROUP OF SPINS NUCLEARS AND A GROUP OF SPINS NUCLEARS AND PROVISION FOR THE DETECTION OF COMPOUNDS THAT HAVE DOUBLE NUPLEAR NUCLEAR NUCLEAR RUSTIC RESONANCE A method for detecting and / or analyzing compounds having simultaneously nuclear quadrupolar resonance and nuclear magnetic resonance, said compounds having a group of spins A nuclei capable of quadrupolar resonance; and a group of magnetically resonating nuclei B, wherein said method comprises: a) applying a first magnetic field H ~ 1 over said group of nuclei A, oscillating said field H ~ 1, in quadrupolar resonance frequency of said group of spin nuclei A, and simultaneously on said group of spin nuclei B, others of the second and third magnetic fields, said second magnetic field being a magnetic field H ~ 0 ~, which is activated in coincidence with the first pulse of said oscillating magnetic field H ~ 1 ~; and said third magnetic field, a magnetic field H ~ 2 ~ which oscillates at the magnetic resonance frequency of said group of spins nuclei B in said magnetic field H ~ 0 ~; b) deactivating said second magnetic field H ~ 0 ~ when the quadrupolar resonance signal from said group of spins nuclei A is maximum, so that the signal-to-noise ratio of said quadrupolar signal increases, and consequently decreases the minimum volume of the compound possible to detect and / or analyze; c) scan and sum the detected signals while H ~ 0 ~ is deactivated, in sync with the excitation pulse sequence for H ~ 1 ~ d) activate the magnetic field H ~ 0 ~ once the scanning step is completed; e) repeating steps b) to d) until a suitable signal to noise ratio is obtained to detect said compound; and f) issue an alarm signal in case of positive detection or proceed with detection and / or analysis of the following compound in case of negative signal. More specifically, the method relates to the detection and / or analysis of compounds, particularly explosives, alkaloids, or the like, located in different types of containers, in particular luggage, mail bags, or the like. Also disclosed is a method for the detection and / or analysis of compounds having simultaneously quadrupolar double resonance, sensing elements, and an arrangement for the detection and / or analysis of compounds having simultaneously quadrupolar double resonance or quadrupolar resonance. nuclear and nuclear magnetic resonance.