| 摘要 |
FIELD: radio measurement technology. SUBSTANCE: method includes effect of pulse radiation on sensor and formation of secondary radiation by action of reference, examined and auxiliary pulses on sensor substance which contains nuclei with three-level nonequidistant energetic spectrum. First action is performed by pulse being examined, then expiration of time tau<SB>1</SB>, which is less than transverse relaxation time, action is performed by reference pulse, carrier frequency of which equals that of one of three junctions. In time tau<SB>2</SB>, being less than longitudinal relaxation time, action is carried out by means of auxiliary pulse, carrier frequency of which is equal to second junction frequency. This done, secondary radiation is observed at third function frequency which is mixed of two excitation frequencies. Spectrum of radiation pulse being examined is determined by radiation spectrum obtained. EFFECT: higher analysis results. 3 dwg
|
