FOURIER TRANSFORM NUCLEAR MAGNETIC RESONANCE SPECTROMETER EMPLOYING RANDOM PULSE INTERVALS

摘要

1373066 Nuclear magnetic resonance spectrometers VARIAN ASSOCIATES 7 April 1972 [8 April 1971] 16077/72 Heading G1N In a nuclear magnetic resonance spectrometer of the type in which successive free precession interferogram signals derived by pulsed R.F. excitation of a sample in a magnetic field are averaged and the Fourier transform of the averaged signal is displayed, the establishment of a steady state net transverse magnetization in a sample having a long relaxation time (e.g. CSP13/SP in methyl iodide) is avoided by randomly changing the pulse repetitionlperiod. The period may be changed after every pulse or, preferably, after a group of pulses.