title: Direct observation of nuclear spin diffusion in real space.
abstract: Images directly visualizing the spatial spin-diffusion process are reported. The measurements were performed using a magnetic resonance force microscope. The field gradient associated with the force-detection experiment is large enough to affect the spin dynamics and a modified kinetics of the spin-diffusion process is observed. The effects of the gradient were compensated for by a pulse scheme and a pure Zeeman diffusion rate constant of D=(6.2+/-0.7)x10{-12} cm{2}/s in CaF2 was observed.
authors.affiliation: Physical Chemistry, ETH Zurich, CH-8093 Zurich, Switzerland.
authors.forename: Kai W
authors.initials: KW
authors.lastname: Eberhardt
authors.forename: Schahrazede
authors.initials: S
authors.lastname: Mouaziz
authors.forename: Giovanni
authors.initials: G
authors.lastname: Boero
authors.forename: Jürgen
authors.initials: J
authors.lastname: Brugger
authors.forename: Beat H
authors.initials: BH
authors.lastname: Meier