FIELD: study of structure of chemical compounds. SUBSTANCE: method includes acting on specimen of two HF pulses with time interval τ from beginning of cycle to beginning of the second pulse, setting of normal excitation conditions and registration of spin echo, calibrated measurement of value of HF field by the known specimen and determination of gyromagnetic relation of nuclei of tested sample. First pulse width is smoothly varied together with time interval for same value, modulation of echo signal is registered, frequency w1 is found by maxima of echo signals, and gyromagnetic relation of nuclei is determined as relation between this frequency ω1 and value of calibrating multifrequency field H1. EFFECT: higher efficiency. 2 dwg
