Influence of Reversible and Irreversible Relaxation on the Single-Pulse Echo Signal |
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Authors: | V S Kuz'min V M Kolesenko |
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Institution: | (1) A. D. Sakharov International State Ecological University, Minsk, Belarus;(2) Institute of the Solid Body and Semiconductors Physics, National Academy of Sciences of Belarus, 17 P. Brovka Str., Minsk, 220072, Belarus |
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Abstract: | An analytical expression for a signal of the single-pulse echo generated in nonresonant pulse excitation of an inhomogeneously broadened two-level quantum system has been obtained, with the reversible and irreversible relaxation taken into account. It is shown that the rate of decay of the single-pulse echo is determined by the rate of reversible and irreversible transverse relaxation. It has been established that the contribution of the reversible and irreversible relaxations to decay of the single-pulse echo depends on the ratio between the detuning of the pulse-carrying frequency from resonance to the Rabi frequency. The difference between the times of transverse irreversible relaxation measured in manganese ferrite MnFe2O4 by the methods of single and two-pulse echo of nuclear magnetic resonance has been explained within the framework of the theoretical expressions obtained. |
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Keywords: | nuclear magnetic resonance single-pulse echo signal time of reversible and irreversible relaxation rate of integral decay |
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