FIELD: physical measurements; radio means using magnetic resonance for searching, detecting, and identifying materials.
SUBSTANCE: proposed method used for exciting magnetic resonance in material and recording it in the form of echo or induction signals is characterized in that exciting pulse signal modulated by internal pulse and/or phase obeying arbitrarily specified law is applied to material; echo or induction signal received is stored; reference signal of same shape as echo or induction signal is generated; reference signal is delayed with respect to exciting signal by time interval whose length is chosen between zero and viewing interval; stored echo or induction signal is multiplied by delayed reference signal whose shape is same as that of echo or induction signal, respectively; signal obtained as result of multiplication is integrated in time at viewing interval; magnetic resonance is recorded by peak of signal obtained after integration.
EFFECT: enlarged range of material detection.
1 cl, 1 dwg
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