Paper Info
Title
Sensitivity Enhancement of NMR Spectroscopy Receiving Chain Used in Condensed Matter Physics.
Abstract
Assurance of high measuring sensitivity is one of the most challenging issues for any nuclear magnetic resonance (NMR) spectroscopy system. To this end, we propose an accurate noise model of the entire probe-to-spectrometer receiving chain for condensed matter physics, based on the concept of noise figure. The model predicts the propagation of both the signal and noise levels in every component of the NMR spectroscopy receiving chain. Furthermore, it enables identification of the "weakest" component and, therefore, the optimization of the whole system. The most important property of the proposed model is the possibility to find system parameters that reduce the measurement time by an a priori calculation, rather than an a posteriori approach. The model was tested experimentally on several different samples. It was found that the measurement time can still be significantly shortened, down to at least one half of the measurement time, starting from optimized conditions with commercially available components. Thus, the proposed model can be used as a tool for both quantitative analysis of the noise properties and a sensitivity prediction of practical NMR systems in physics and material science.
Year
DOI
Venue
2019
10.3390/s19143064
SENSORS
Keywords
Field
DocType
NMR,noise,noise figure,amplifier,NMR measurement time decrease,sensitivity enhancement
A priori and a posteriori,Noise figure,Engineering,Spectroscopy,Nuclear magnetic resonance spectroscopy,One half,Condensed matter physics,Amplifier
Journal
Volume
Issue
Citations 
19
14
0
PageRank 
References 
Authors
0.34
0
3
Name
Order
Citations
PageRank
Petar Kolar100.34
Mihael S Grbić200.34
Silvio Hrabar300.34