PROCESS AND GEAR TO DETECT FIRST MATERIAL IN BULK OF SECOND MATERIAL SURROUNDING FIRST MATERIAL Russian patent published in 2000 - IPC

FIELD: localization of diamonds in kimberlite rocks. SUBSTANCE: first material, for instance, diamonds have very great time of spin-lattice relaxation of the order of several hours. For fast detection of first material time of rise of magnetization of certain kind of nuclei, for example, nuclei ¹³C, abundant in first material is reduced and after this nuclear magnetic resonance of this kind of nuclei is measured. Mentioned reduction of time is carried out at station of preliminary treatment of material but measurement is conducted at analysis station. Reduction of time and measurement are executed in magnetic fields having different intensity ( (B₀₁, B₀₂) ). EFFECT: possibility of fast detection of diamonds in bulk of rock. 22 cl, 4 dwg