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A Precision Current Pulse Generator for NMR Self-Diffusion Measurements by the Pulsed Gradient Technique

1972; American Institute of Physics; Volume: 43; Issue: 10 Linguagem: Inglês

10.1063/1.1685476

1527-2400

Gerald B. Matson,

Advanced MRI Techniques and Applications

An apparatus is described for delivering controlled pulses of current into an inductive load. Digital logic is utilized for control of the pulse duration, and current feedback is used to control the magnitude of the pulse. The apparatus was designed to enable NMR self-diffusion measurements to be obtained by the pulsed gradient technique, and diffusion results are shown for number 15 white mineral oil using pulse durations of 10 msec and magnitudes of over 25 A.