Chapter 4 Techniques Used for <sup>14</sup>N NQR Studies
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Experimental and theoretical aspects of using direct multi-pulse techniques in 14N nuclear quadrupole resonance (NQR) are considered. The optimum correlations between the parameters of multi-pulse sequences and the relaxation characteristics of the substances under investigation are discussed. A number of methods for cancelling magneto-acoustic and piezo-electric ringing signals in the spectroscopy of NQR are also considered. © 2009 Elsevier Ltd. All rights reserved.