Abstract: In this paper, we employe a set of CuSiO4 solutions with different concentrations to study the influence of the transverse relaxation time on the NMR signal. When the transverse relaxation time of these samples is much longer than the period of the scanning magnetic field, the dephasing of the micro-magnetic moment is found to be the main factor which resuhes in the decreasing of the NMR signal. In this case, the periodical oscillating NMR singals can be observed both before and after the resonance.

Key words: NMR, apparent relaxation time, transverse relaxation, dephasing of the magnetic monent