Abstract
The theoretical investigation of the multiple-pulse sequences in which the radio-frequency pulses are applied simultaneously at two transitions are presented. The time-independent solution of the quantum Liouville equation for the average Hamiltonian of inhomogeneous broadening in the sequence is obtained by the projection operator technique. This solution predicts the multiple echo signals on the third transition that is not irradiated by radio-frequency pulses.
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Osokin, D.Y., Khusnutdinov, R.R. & Shagalov, V.A. Two-frequency multiple-pulse sequences in nitrogen-14 NQR. Appl. Magn. Reson. 25, 513–521 (2004). https://doi.org/10.1007/BF03166545
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DOI: https://doi.org/10.1007/BF03166545