Technical Aspects of Fast Field Cycling
نویسندگان
چکیده
CONTENTS I. Introduction II. Premises of FFC NMR relaxometry III. FFC magnet A. General considerations B. Optimal configuration of an FFC magnet C. Electric and geometric parameters determining B 0 and dB 0 /dt D. Example of a real 1T FFC magnet IV. Magnet power supply A. General considerations and peculiarities of an FFC power supply B. Historic solutions and a modern approach C. Switching time considerations and limits D. Why the bipolar configuration E. Power regulation banks F. Active compensation of the field temperature dependence V. Cooling system VI. Detection probe VII. Console VIII. FFC data acquisition sequences A. Special FFC features of elementary sequence intervals B. Basic structure of any FFC sequence C. Elementary FFC sequences IX. Acquisition and evaluation of complete relaxation curves A. Arrayed T 1 measurement experiments B. Effects of field-switching intervals C. Data accumulation methods D. Evaluation of the relaxation curves E. Factors influencing the precision of relaxation rate estimates F. Optimization of relaxation rate measurements X. Signal detection and analysis A. Hardware detector types B. Post-detection signal handling C. NMR signal detection sequences XI. Advanced FFC sequences A. Thermally balanced sequences B. Inversion Recovery C. Jeener-Broekaert sequence XII. Conclusions and perspectives
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