Development of Electric Field Nmr Signal Acquisition System

Prance, Robert J, Aydin, Ahmet, Harland, Christopher J and Prance, Helen (2009) Development of Electric Field Nmr Signal Acquisition System. In: Fraissard, Jacques and Lapina, Olga (eds.) Explosives Detection Using Magnetic And Nuclear Resonance Techniques. NATO Science for Peace and Security Series B: Physics and Biophysics . Springer Verlag, Dordrecht, pp. 245-252. ISBN 9789048130603

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An entirely new approach to signal acquisition in nuclear magnetic resonance (NMR) systems has recently been demonstrated experimentally at Sussex. We report results which bring this method closer to realising some significant advantages over the conventional approach. The method uses a novel sensor technology, the electric potential sensor, to detect the electric field signal associated with the precessing nuclear spins. It provides an alternative non-inductive method for acquiring the signal via a weak capacitive coupling to the sample. This paper builds on previously published results and demonstrates the ability to detect spin-echo signals from liquid samples as well as free induction decays from solid samples using this technique. In addition, we demonstrate the intrinsic spatial resolution of the method by using a measurement electrodes with a range of sizes from 180 to 0.2 mm2, corresponding to coupling capacitance of 1 pF to 1 fF. Conclusions are drawn as to some of the likely application areas for this signal acquisition technique

Item Type: Book Section
Keywords: electric field; electrometer; instrumentation; NMR
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Depositing User: Robert Prance
Date Deposited: 06 Feb 2012 18:51
Last Modified: 24 Jun 2015 12:31
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