Motional Averaging of Nuclear Resonance in a Field Gradient

Abstract

The traditional view of nuclear-spin decoherence in a field gradient due to molecular self-diffusion is challenged on the basis of temperature dependence of the linewidth, which demonstrates different behaviors between liquids and gases. The conventional theory predicts that in a fluid, linewidth should increase with temperature; however, in gases we observed the opposite behavior. This surprising behavior can be explained using a more detailed theoretical description of the dephasing function that accounts for position autocorrelation effects.

8 pages, 7 figures

References in corpus (2)

• Thermal Maps of Gases in Heterogeneous Reactions
• Harmonic Oscillator in Heat Bath: Exact simulation of time-lapse-recorded data, exact analytical benchmark statistics

Cited by in corpus (2)

• Comment on "Motional Averaging of Nuclear Resonance in a Field Gradient"
• Attenuation of the NMR signal in a field gradient due to stochastic dynamics with memory