A fully homemade 14N quadrupole resonance spectrometer
Résumé
In spite of a renewed interest in Nuclear Quadrupole Resonance (NQR), especially of nitrogen-14 (for instance, for the detection and characterization of explosives), a full NQR instrument, ready to use in the laboratory, is not commercially available. We describe here an entirely homemade spectrometer, reasonably transportable, including the transmit-receive system, frequency generation, data acquisition, probes and a specialized software for driving the instrument and for data processing.