Journal ArticleDOI
Modified steady-state free precession pulse sequences for the detection of pure nuclear quadrupole resonance.
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TLDR
Modifications of the steady-state free precession multi-pulse technique for the effective detection of the nuclear quadrupole resonance (NQR) signals are proposed and convincingly demonstrate its effectiveness.About:
This article is published in Solid State Nuclear Magnetic Resonance.The article was published on 2004-01-01. It has received 11 citations till now. The article focuses on the topics: Nuclear quadrupole resonance.read more
Citations
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Journal ArticleDOI
SVD for enhanced explosives detection using NQR
TL;DR: In this article, a singular value decomposition (SVD) based on Hankel matrix is proposed to detect the NQR signal, where the original signal can be decomposed into the linear superposition of a series of component signals by SVD using Hankel matrices.
Journal ArticleDOI
14N pulsed nuclear quadrupole resonance. 3. Effect of a pulse train. Optimal conditions for data averaging
TL;DR: In this paper, the optimal conditions of a NQR experiment when a transition is monitored by means of a pulse train with pulses of identical duration and signal acquisition after each pulse; coherences vanish by effective transverse relaxation prior to every new pulse.
Journal ArticleDOI
Suppression of spectral anomalies in SSFP-NMR signal by the Krylov Basis Diagonalization Method.
TL;DR: Results lead to the conclusion that the KBDM can be successfully applied, mainly because it is not influenced by truncation or phase anomalies, as observed in the Fourier transform spectra.
Journal ArticleDOI
Magic echo multi-pulse sequence in nitrogen-14 NQR
TL;DR: In this article, the influence of the "magic echo" multi-pulse (MEMP) sequences on nitrogen-14 NQR spin-system was studied. But the time reversal effect has not been observed, and the obtained results add to the understanding of dynamic properties of the quadrupolar spin system.
Book ChapterDOI
Fundamentals of Pulsed Nitrogen-14 Quadrupole Resonance
Daniel Canet,Maude Ferrari +1 more
TL;DR: In this article, a new tool based on density matrix calculations is proposed for nitrogen-14 nuclear quadrupole Resonance (NQR) measurements, which can predict the evolution of the signal amplitude as a function of the pulse length.
References
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Journal ArticleDOI
Application of Fourier Transform Spectroscopy to Magnetic Resonance
Richard R. Ernst,W. A. Anderson +1 more
TL;DR: In this paper, the application of a new Fourier transform technique to magnetic resonance spectroscopy is explored, which consists of applying a sequence of short rf pulses to the sample to be investigated and Fourier-transforming the response of the system.
BookDOI
Experimental pulse NMR : a nuts and bolts approach
TL;DR: Pulse and Fourier Transform NMR (FFTNMR) as mentioned in this paper is a NMR technique based on the Fourier transform (FTN) which is used for relaxation.
Journal ArticleDOI
Steady-state free precession in nuclear magnetic resonance
TL;DR: In this paper, a steady-state free precession technique for observing nuclear magnetic resonance is described, and a mathematical analysis is presented for certain special conditions, and initial experiments verifying the results of this analysis are reported.
Journal ArticleDOI
Phase and intensity anomalies in fourier transform NMR
Ray Freeman,Howard D. W. Hill +1 more
TL;DR: In this article, a simple device is proposed which effectively suppresses these anomalies by introducing a small random delay in the timing of the radiofrequency pulses, which may be masked by short-term instabilities in the field/frequency ratio or by incoherence introduced by heteronuclear noise decoupling.
Related Papers (5)
Modifications of the steady-state free-precession sequence for the detection of pure nuclear quadrupole resonance
T N Rudakov,A V Belyakov +1 more