Sample holder for NMR measurements with field homogenization in the sample volume by means of the bordering surfaces of the sample holder

摘要

A sample vessel ( 80 ) made of material with magnetic susceptibility chi₂, for containing a sample substance ( 87 ) with magnetic susceptibility chi₃<>chi₂ to be analyzed in a nuclear magnetic resonance (NMR) spectrometer, has an inner interface G₂ toward the sample substance and an outer interface G₁ toward the environment ( 85 ) that exhibits magnetic susceptibility chi₁. The shape of the interface toward the sample substance and the interface toward the environment are coordinated to match the discontinuities in susceptibility at the interfaces in such a way that on introduction of the sample tube filled with sample substance into the previously homogeneous magnetic field of an NMR spectrometer, the magnetic field inside the sample substance remains largely homogeneous.