The nuclear spin-echo signals under combined action of magnetic field and RF pulses

The effect of a pulse magnetic field on formation of the single-pulse echo signal in some magnetic materials has been studied. The signals of nuclear- spin echo formed by the combined action of radio frequency and magnetic pul ses have been observed. The duration of the magnetic pulse was only limited by the length of the radio frequency pulse. The echo signal formed by the two magnetic pulses, the edges of a long magnetic pulse, and other situatio ns that allowed us to reproduce the analogue of multipulse action, were obs erved as well.