Pulsed Field Gradients for NMR Spin-Echo Diffusion Measurements

Abstract

Construction parameters are given for coils to produce field gradients for use in NMR spin-echo diffusion studies. The coils are shaped to give the greatest field gradient homogeneity in the region of the sample, taking into account image currents in the magnet pole faces. A circuit diagram of the current supply is given, including a transistor switch for pulsing the current.