HW/SW Co-Design and test of a SoC-FPGA based NQR Compact Spectrometer
Résumé
Nuclear Quadrupolar Resonance (NQR) is a spectroscopy technique that is used to study nuclei with spin superior to 1/2 like 14 N , 35 Cl, 27 Al and 127 I [1]. The NQR is well suited for a broad range of portable applications, nevertheless it suffers from a relatively weak sensitivity and susceptibility to external noise. Several portable spectrometers were presented in the literature, but those designed for NQR have critical components in the analog domain, inducing low sensitivity resulting from various types of noise. Moreover, they have limited performances. The work introduces a SoC-FPGA based solution for spectrometer integration of key hardware and software parts including, a high resolution pulser, a fully controllable pulse transmitter, an acquisition module, in addition to embedded software applications. The objective is to increase portability, sensitivity and immunity to various noise sources.
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