| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem wherein highly accurate positioning of a probe is difficult because a uniform magnetic field space of an NMR device with a split type magnet is narrow. SOLUTION: As for positioning of the center of a probe coil 5, first of all, an NMR probe 4 is inserted from a horizontal bore 8b and installed on a proper position. A sample tube 6 is inserted from a vertical bore 8a on this position, and an NMR signal is measured from the probe coil 5. An NMR signal measuring device 16 amplifies the NMR signal from the probe coil 5 and performs A/D conversion, to thereby determine an NMR spectrum signal, and an NMR signal analyzer 17 compares the NMR spectrum signal. The operation is repeated, and the probe is set on a position having a spectrum with the steepest sharpness, namely, the position having a magnetic field with the highest uniformity. COPYRIGHT: (C)2007,JPO&INPIT
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