SENSITIVITY ENHANCEMENT IN QUADRUPOLAR NUCLEI DOUBLE-RESONANCE DETECTION

NMR imaging of quadrupolar nuclei in liquid system has received less a ttention than the imaging of S = 1/2 nuclei due to difficulties associ ated with the quadrupolar interaction. The B-10 spatial distribution i n (Na2B12H11SH)-B-10 in phantom has been obtained using an indirect J- coupling Double Resonance method. This procedure allows one to localiz e the quadrupolar nuclei by observing the protons J-coupled with them. The sensitivity gain in the indirect spatial localization of the B-10 nuclei with respect to to the direct one, is here computed and verifi ed on the (Na2B12H11SH)-B-10 images.